P37E.pdf Feb.5,2018 Piezoelectric Sound Components !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. EU RoHS Compliant F**2&#.0-"3!21',2&'1!2*-%!-+.*7 5'2& - @ F - '12&# 30-.#,'0#!2'4# |z{{GG -,2&##120'!2'-,-$2&# 1#-$#02', 80"-313 12,!#1', *#!20'!*," *#!20-,'! /3'.+#,2@ FFor+-0#"#2'*1A.*#1#0#$#r2o-ur5# .%#A3021..0-!&$-0 - H&22.1BGG555@+302@!-+G#,Q#3G13..-02G !-+.*',!#G0-&1J@ P37E.pdf Feb.5,2018 P37E.pdf !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. Feb.5,2018 1 Contents Product specifications are as of January 2018. Part Numbering p2 2 1 Piezoelectric Sounders SMD Type Product Lineup p4 Pin Type Product Lineup p8 Pin Type Taping Product Lineup p11 Drive Method p13 !Caution * Notice p14 2 Piezoelectric Buzzers Product Lineup p16 !Caution * Notice p17 3 Piezoelectric Diaphragms Product Lineup p19 Design Procedures * Drive Method p20 !Caution * Notice p21 Oscillating System p23 To Raise Sound Pressure Level (S.P.L.) p24 Measuring Method p25 Minimum Quantity p26 Please check the MURATA website (https://www.murata.com/) if you cannot find a part number in this catalog. 3 !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. o Part Numbering SMD Piezoelectric Sounder (Part Number) PK LCS 1212 1 2 3 40 ** -R1 4 5 6 7 E 1Product ID 4Drive Product ID PK Piezoelectric Sound Components Code Drive E External Drive 5Oscillating Frequency Type 2Product Code Product LCS/MCS SMD Sounder Expressed resonant frequency by two-digit alphanumerics. The unit is in 100 hertz (Hz.) 4kHz (4000Hz) is denoted as "40." 6Individual Specification Code 3Dimensions Code Outer Dimensions 1818 p18mm 1212 p12mm 0909 p9mm Code Individual Specification Code ** Two digits express specific specification in characteristics. 7Packaging Code Packaging -R1 Plastic Taping Pin Type Piezoelectric Sounders/Piezoelectric Buzzers (Part Number) P YH 40 ** P -A0 3 4 5 6 7 8 9 : PK M 13 E 1 2 7Oscillating Frequency Type 1Product ID Product ID PK Piezoelectric Sound Components 2Product 8Individual Specification Code Code Product M Sounder B Buzzer ** Individual Specification Code Two digits express custom specification in characteristics. Code Special Quality Guarantee Code Outer Dimensions P Post Plated Terminal 13 o12.6mm e Not Post Plated Terminal (Blank) :Packaging 4Drive Code Drive Code E External-Drive -B0 Bulk S Self-Drive -A0 Radial Taping Code Outer Electrode Style P Pin Type 6Structure Code Packaging Radial taping is not available for all types. Please contact us. 5Outer Electrode Style Structure Pp Flat Type Auto-assemble Yp Flat Type/Available for Taping Cp Flat Type/Semi-auto-assemble p Exclude above mentioned p signifies specification of the outer electrode. 2 Code 9Special Quality Guarantee 3Outer Dimensions Expressed by two figures in mm. Ex.) Expressed resonant frequency by two-digit alphanumerics. The unit is in 100 hertz (Hz). In case of 4kHz (4000Hz), expressed as "40." P37E.pdf Feb.5,2018 !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. P37E.pdf Feb.5,2018 Piezoelectric Diaphragms 7 N (Part Number) B 1 2 3 -**** -1R5 4 5 L 10 6 7 1Product ID 5Resonant Frequency Type Product ID 7 Ceramic Material 2Metal Plate Material A hyphen (-) and three-digit alphanumerics express resonant frequency. A decimal point is expressed by the capital letter "R." If there is no decimal point, the decimal point code is omitted. 6Product Specification Code Metal Plate Material B Brass N Nickel Alloy 3Product Code Product Specification L With lead (available for RoHS) e No lead (omitted) 7Individual Specification Code Code Product B Piezoelectric Diaphragms These digits express a lead length, lead number, and the presence/absence of a connector. If the product has no individual specification, the corresponding code is omitted. 4Metal Plate Diameter Code -**** Metal Plate Diameter A hyphen (-) plus from two to four-digit alphanumerics express metal plate outer dimensions. A decimal point is expressed by the capital letter "R." 3 P37E.pdf !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. 1 Feb.5,2018 Piezoelectric Sound Components RoHS (0.4) Piezoelectric Sounders SMD Type Taking advantage of extensive acoustic and mechanical design technology and high performance ceramics, Murata has developed SMD piezoelectric sounders that suit the thin, high-density design of electronic equipment. 3.0 max. (3.3) Sound Emitting Hole 12.0 (o0.15) Open Hole (3.0) * Marking : PKLCS1212E2000-R1 PKLCS1212E20A0-R1 : PKLCS1212E2400-R1 PKLCS1212E24A0-R1 Features 1. Small, thin and lightweight 2. High sound pressure level and clear sound 3. Reflowable 4. Tape & Reel supply PKLCS1212E2400-R1 PKLCS1212E24A0-R1 ( ): Ref. only Tol.: 0.2 (in mm) 10.0 (Note) The location of open hole is not specified. 9.0 (1.5) (1.5) 3.0 max. (0.9) (1.9) 4.0 PKLCS1212E2000-R1 PKLCS1212E20A0-R1 12.0 (3.0) 1.1 Open Hole 0.6 1.9 max. (0.3) 4.0 12.0 1.2 (2.0) (0.7) 3.2 9.0 Sound Emitting Hole 12.0 Sound Emitting Hole (1.5) (6.4) 10.0 PKMCS0909E4000-R1 (in mm) 6.4 2.7 6.4 18.0 (14.2) (Note) The location of open hole is not specified. Sound Emitting Hole 0.95 (3.2) (0.8) + Polarity: +terminal (Hot Side of D.C.) -terminal (0V) (1.0) (14.2) (1.4) (10.4) (0.4) (6.1) (1.8) 18.0 8.0 max. (2.0) (0.4) ( ): Ref. only Tol.: 0.2 1.0 ( ): Ref. only Tol.: 0.2 (in mm) (4.5) (1.4) (2.1) PKLCS1212E4001-R1 PKLCS1212E40A1-R1 16.0 -Tarminal +Tarminal PKMCS1818E20A0-R1 ( ): Ref. only Tol.: 0.2 1.0 1.0 (in mm) For Consumer Part Number Sound Pressure Level (typ.) Operating Voltage Range* (Vo-p) Capacitance (nF) Ref. only Operating Temp. Range (C) Storage Temp. Range (C) PKLCS1212E2000-R1 76dB [1.5Vo-p,2.0kHz,square wave,10cm] 12.5 max. (28.0) -20 to +70 -30 to +80 PKLCS1212E2400-R1 80dB [1.5Vo-p,2.4kHz,square wave,10cm] 12.5 max. (28.0) -20 to +70 -30 to +80 PKLCS1212E4001-R1 84dB [1.5Vo-p,4.0kHz,square wave,10cm] 12.5 max. (19.5) -20 to +70 -30 to +80 PKMCS0909E4000-R1 72dB [1.5Vo-p,4.0kHz,square wave,10cm] 12.5 max. (9.0) -40 to +85 -40 to +85 *Operating Voltage Range: Does not contain Direct Current bias. 4 P37E.pdf !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. Feb.5,2018 For Automotive Part Number Sound Pressure Level (typ.) Operating Voltage Range* (Vo-p) Capacitance (nF) Ref. only Operating Temp. Range (C) Storage Temp. Range (C) PKLCS1212E20A0-R1 76dB [1.5Vo-p,2.0kHz,square wave,10cm] 12.5 max. (28.0) -40 to +85 -40 to +85 PKLCS1212E24A0-R1 80dB [1.5Vo-p,2.4kHz,square wave,10cm] 12.5 max. (28.0) -40 to +85 -40 to +85 PKLCS1212E40A1-R1 84dB [1.5Vo-p,4.0kHz,square wave,10cm] 12.5 max. (19.5) -40 to +85 -40 to +85 PKMCS1818E20A0-R1 100dB [12Vo-p,2.0kHz,square wave,10cm] 18.0Vo-p [with polarity] (37.0) 1 -40 to +105 -40 to +105 *Operating Voltage Range: Does not contain Direct Current bias. Standard Land Pattern Dimensions PKLCS1212E Series PKMCS0909E Series 10.0 10.0 7.4 4.0 3.4 12.4 (in mm) (in mm) PKMCS1818E Series 18.4 1.2 6.4 2.7 1.2 6.4 16.0 (in mm) Frequency Response PKLCS1212E2000-R1 / PKLCS1212E20A0-R1 Conditions: 10cm, A-filter PKLCS1212E2400-R1 / PKLCS1212E24A0-R1 Conditions: 10cm, A-filter 100 100 Square wave, 1.5Vo-p 90 85 80 75 70 65 60 55 50 Square wave, 1.5Vo-p 95 Sound Pressure Level (dB) Sound Pressure Level (dB) 95 90 85 80 75 70 65 60 55 0 1 2 3 4 5 6 Frequency (kHz) 7 8 9 10 50 0 1 2 3 4 5 6 Frequency (kHz) 7 8 9 10 Continued on the following page. 5 P37E.pdf !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. Feb.5,2018 Continued from the preceding page. Frequency Response PKLCS1212E4001-R1 / PKLCS1212E40A1-R1 Conditions: 10cm, A-filter 1 PKMCS0909E4000-R1 Conditions: 10cm, A-filter 100 100 Square wave, 1.5Vo-p 90 85 80 75 70 65 60 55 50 Square wave, 1.5Vo-p 95 Sound Pressure Level (dB) Sound Pressure Level (dB) 95 90 85 80 75 70 65 60 55 0 1 2 3 4 5 6 Frequency (kHz) 7 8 9 10 50 0 1 2 3 4 5 6 Frequency (kHz) 7 8 9 10 PKMCS1818E20A0-R1 Conditions: 10cm, A-filter 120 Square Wave, 12Vo-p Sound Pressure Level (dB) 110 100 90 80 70 60 50 0 1 2 Frequency (kHz) 3 4 Taping Dimension PKLCS1212E Series (o330) (o80) 11.50.1 Trailer Components 160-200 12.50.1 +0.1 o1.50 -0.0 2.00.1 24.00.2 4.00.1 Dimensions of Reel 1.750.1 Dimensions of Carrier Tape Direction of Feed 240-280 Empty 400-560 Leader 25.50.5 33.5 max. 16.00.1 2.20.2 Cover Film 13.00.2 3.10.1 Cover film peel strength force: 0.1-0.7N Cover film peel speed: 300mm/min. Cover Film 12.50.1 10 6 (in mm) P37E.pdf !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. Feb.5,2018 Taping Dimension PKMCS0909E Series 12.00.1 Components (o330) 7.50.1 00* 00* 00* 00* 9.50.1 9.50.1 Direction of Feed Trailer 160 to 200 0.30.1 (o80) +0.1 o1.5-0.0 2.00.1 16.00.3 4.00.1 1 Dimensions of Plastic Reel 1.750.1 Dimensions of Plastic Tape Cover film 2.00.5 240 to 280 Empty 400 to 560 Leader 2.40.2 o13.00.5 17.41.0 Cover Film 22.5 max. 10 Cover film peel strength force 0.1 to 0.7N Cover film peel speed 300mm/min. (in mm) Taping Dimension PKMCS1818E Series (o330) Trailer Components 160-200 (o80) 14.20.1 0.20.1 1.70.1 1.50.1 240.1 8.30.1 18.40.1 +0.1 o1.50-0.0 2.00.1 32.00.3 4.00.1 Dimensions of Reel 1.750.1 Dimensions of Carrier Tape 2.20.2 Cover Film 240-280 Empty 400-560 Leader 33.50.5 41.5 max. 13.00.2 Direction of Feed The cover film peel strength force: 0.1 to 0.7N The cover film peel speed: 300mm/min. Cover Film 18.40.1 10 (in mm) 7 P37E.pdf !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. 1 Feb.5,2018 Piezoelectric Sound Components RoHS Piezoelectric Sounders Pin Type Microcomputers are widely used for microwave ovens, air conditioners, cars, toys, timers, and alarm equipment. Externally driven piezoelectric sounders are used in digital watches, electronic calculators, telephones and other equipment. They are driven by a signal (ex.: 2048Hz or 4096Hz) from an LSI and provide melodious sound. Features 0.9 3.5 6.9 o12.6 2-o0.5 5.0 2-o1.0 7.5 PKM13EPYH4002-B0 2-o2.5 (in mm) Tol.: 0.5 1. Low power consumption 2. Noiseless and highly reliability Applications 1. Various office equipment such as PPCs printers and keyboards 2. Home appliances such as microwave oven, rice cookers etc. 3. Confirmation sound of various audio equipment 1.2 3.5 8.6 R1.0 10.0 o17.0 Terminal of marking side should be connected to hot side of D.C. 11.0 2-o1.2 PKM17EPP-2002-B0 2-o3.5 (in mm) Tol.: 0.5 2-o3.5 4.7 4.0 (in mm) Tol.: 0.5 PKM17EPPH4001-B0 5.0 11.0 5.0 6.0 2-o1.2 PKM22EPH2001 6.5 3.5 R1.0 (in mm) Tol.: 0.5 Part Number PKM22EPH2001 PKM22EPH2002 PKM22EPH2003 4.0 8.0 12.0 7.0 1.2 10.8 1.2 R1.0 0.8 0.8 10.0 o22.0 10.0 o22.0 2-o1.2 10.0 10.0 2-o1.2 2-o3.5 (in mm) Tol.: 0.5 PKM22EPPH2001-B0 Part Number PKM22EPPH2001-B0 PKM22EPPH2002-B0 8 8.0 20 23.0 o22.0 10.0 o17.0 Part Number PKM17EPPH4001-B0 PKM17EPPH4002-B0 Hole Pattern (Reference) 2-o1.5 1.6 8.3 0.8 1.2 7.0 R1.0 4.8 10.5 12.6 6.5 3.5 2-o3.5 (in mm) Tol.: 0.5 PKM22EPPH4001-B0 Part Number PKM22EPPH4001-B0 PKM22EPPH4002-B0 6.5 3.5 P37E.pdf !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. Feb.5,2018 1 10.8 1.2 6.5 8.2 3.5 0.8 10.0 0.8 10.0 o22.0 2-o1.2 o22.0 R8.5 2-o3.5 10.0 5.0 5.0 18 18 o1.2 3-o1.5 3-o1.7 PKM22EPPH4005-B0 1.2 R1.0 R1.0 2-o3.5 Part Number PKM22EPPH4007-B0 PKM22EPPH4012-B0 0 12 0 12 (in mm) Tol.: 0.5 PKM22EPPH4007-B0 (in mm) Tol.: 0.5 6.5 3.5 Operating Voltage Range* (Vo-p) Capacitance (nF) Operating Temp. Range (C) 15.0 max. 5.5 30%[1kHz] -40 to +85 -40 to +85 -20 to +70 -30 to +80 7.0 30%[1kHz] -20 to +70 -30 to +80 17.0 30%[120Hz] -20 to +70 -30 to +80 19.0 30%[120Hz] -20 to +70 -30 to +80 15.0 max. 12.0 30%[1kHz] -20 to +70 -30 to +80 15.0 max. 12.0 30%[1kHz] -20 to +70 -30 to +80 15.0 max. 12.0 30%[1kHz] -20 to +70 -30 to +80 Part Number Sound Pressure Level (typ.) PKM13EPYH4002-B0 78dB [1.5Vo-p,4.0kHz, square wave,10cm] PKM17EPP-2002-B0 79dB [3.0Vo-p,2.0kHz, square wave,10cm] PKM17EPPH4001-B0 79dB [1.5Vo-p,4.0kHz,square wave,10cm] 12.5 max. PKM22EPH2001 85dB [1.5Vo-p,2.0kHz,square wave,10cm] 12.5 max. PKM22EPPH2001-B0 79dB [1.5Vo-p,2.0kHz,square wave,10cm] 15.0 max. PKM22EPPH4001-B0 87dB [1.5Vo-p,4.0kHz,square wave,10cm] PKM22EPPH4005-B0 86dB [1.5Vo-p,4.0kHz,square wave,10cm] PKM22EPPH4007-B0 92dB [1.5Vo-p,4.0kHz,square wave,10cm] 25.0 max. [with polarity] 34.0 30%[120Hz] Storage Temp. Range (C) *Operating Voltage Range: Does not contain Direct Current bias. Frequency Response PKM13EPYH4002-B0 Conditions: 10cm, A-filter PKM17EPP-2002-B0 Conditions: 10cm, A-filter 100 100 Square wave, 1.5Vo-p 90 85 80 75 70 65 60 55 50 Square wave, 1.5Vo-p 95 Sound Pressure Level (dB) Sound Pressure Level (dB) 95 90 85 80 75 70 65 60 55 0 1 2 3 4 5 6 Frequency (kHz) 7 8 9 50 10 0 1 2 PKM17EPPH4001-B0 Conditions: 10cm, A-filter 7 8 9 10 100 Square wave, 1.5Vo-p 95 Square wave, 1.5Vo-p 95 90 Sound Pressure Level (dB) Sound Pressure Level (dB) 4 5 6 Frequency (kHz) PKM22EPH2001 Conditions: 10cm, A-filter 100 85 80 75 70 65 60 55 50 3 90 85 80 75 70 65 60 55 0 1 2 3 4 5 6 Frequency (kHz) 7 8 9 10 50 0 1 2 3 4 5 6 Frequency (kHz) 7 8 9 10 Continued on the following page. 9 P37E.pdf !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. Feb.5,2018 Continued from the preceding page. Frequency Response PKM22EPPH2001-B0 Conditions: 10cm, A-filter 1 PKM22EPPH4001-B0 Conditions: 10cm, A-filter 100 100 Square wave, 1.5Vo-p 90 85 80 75 70 65 60 55 50 Square wave, 1.5Vo-p 95 Sound Pressure Level (dB) Sound Pressure Level (dB) 95 90 85 80 75 70 65 60 55 0 1 2 3 4 5 6 Frequency (kHz) 7 8 9 50 10 0 1 2 PKM22EPPH4005-B0 Conditions: 10cm, A-filter 8 9 10 Square wave, 1.5Vo-p 95 90 Sound Pressure Level (dB) Sound Pressure Level (dB) 7 100 Square wave, 1.5Vo-p 95 85 80 75 70 65 60 55 10 4 5 6 Frequency (kHz) PKM22EPPH4007-B0 Conditions: 10cm, A-filter 100 50 3 90 85 80 75 70 65 60 55 0 1 2 3 4 5 6 Frequency (kHz) 7 8 9 10 50 0 1 2 3 4 5 6 Frequency (kHz) 7 8 9 10 P37E.pdf !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. Feb.5,2018 Piezoelectric Sound Components RoHS 1 Piezoelectric Sounders Pin Type Taping Taking advantage of extensive automatic insertion design technology and materials experience, Murata has developed standard taping type piezoelectric sounders. This Murata technology supports labor and cost saving measures. 0.9 6.9 o12.6 2-o0.5 Features 22.0 5.0 2-o1.0 7.5 1. Lead dimension: Improved mounting reliability (cut & clinch) due to round terminal 2. High, stable mountability 3. Ammo packaging 2-o2.5 (in mm) Tol.: 0.5 Part Number Sound Pressure Level (typ.) Operating Voltage Range* (Vo-p) Capacitance (nF) Operating Temp. Range (C) Storage Temp. Range (C) PKM13EPYH4000-A0 78dB [1.5Vo-p,4.0kHz,square wave,10cm] 15.0max. 5.5 30%[1kHz] -40 to +85 -40 to +85 *Operating Voltage Range: Does not contain Direct Current bias. Frequency Response PKM13EPYH4000-A0 Conditions: 10cm, A-filter 100 Square wave, 1.5Vo-p Sound Pressure Level (dB) 95 90 85 80 75 70 65 60 55 50 0 1 2 3 4 5 6 Frequency (kHz) 7 8 9 10 11 P37E.pdf !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. Feb.5,2018 Taping Dimension 1 dh dh P2 P dS W P1 F t D0 P0 Item W1 L1 W0 H0 d1 H1 W2 A D Code Nominal Value Tol. D o12.6 0.5 Height of component A 6.9 0.5 Dimensions of terminal d1 o0.5 0.1 Lead length under the hold-down tape L1 8.0 min. Pitch of component P 25.4 0.5 Pitch of sprocket P0 12.7 0.2 Length from hole center to lead P1 3.85 0.7 Length from hole center to component center P2 6.35 0.7 Width of diameter -- Lead spacing F 5.0 0.5 Slant forward or backward dh 0 1.0 Width of carrier tape W 18.0 0.5 Width of hold-down tape W0 12.5 min. Position of sprocket hole W1 9.0 Gap of hold-down tape and carrier tape W2 2.0 max. Distance between the center of sprocket hole and lead stopper H0 18.0 Total height of component H1 26.0 max. Diameter of sprocket hole D0 o4.0 0.2 t 0.6 0.2 0 1.0 Total thickness of tape Body tilt dS Notes -- Tolerance for Pitches 10xP0=1272mm 360: 1mm max. Hold-down tape does not exceed the carrier tape. 0.5 -- 0.5 -- (in mm) 12 P37E.pdf !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. Feb.5,2018 Drive Method Fig. 1 shows examples of the circuit to which the external drive method is applied. ( i ) Represents a circuit driven by output signals of the unstable multivibrator. ( ii ) Represents a circuit using 2 NAND gates, which is oscillated or stopped by ON/OFF operations of the input signals. ( iii ) Represents a circuit driven by output signals of CMOS LSI. 1 +V 510 20k 20k 510 0.01F 0.01F 1k 1k (i) 1M 0.001F +V 1k 120k 1k Input Signal ( ii ) +V CMOS LSI 1k Buzzer Drive Circuit Resonator LCD ( iii ) Fig. 1 Drive Circuit 13 P37E.pdf !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. Feb.5,2018 !Caution * Notice 1 !Caution (Rating) Do not use the product beyond the rated temperature range and the rated voltage range. If using it beyond this range, characteristics might degrade. Notice (Storage and Operating Condition) 1. Product Storage Condition Please store the products in a room where the temperature/humidity is stable and avoid places where there are large temperature changes. Please store the products under the following conditions. Temperature: -10 to +40C Humidity: 15 to 85%R.H. 2. Expiration Date on Storage Expiration date (shelf life) of the products is six months after delivery under the condition of a sealed and unopened package. Please use the products within six months after delivery. If you store the products for a long time (more than six months), use carefully because the products may be degraded in solderability due to storage under poor conditions. Please confirm solderability and characteristics for the products regularly. 3. Notice on Product Storage (1) Please do not store the products in a chemical atmosphere (Acids, Alkali, Bases, Organic gas, Sulfides and so on), because the characteristics may be reduced in quality, may be degraded in solderability due to storage in a chemical atmosphere. (2) Please do not store the products directly on the floor without anything under them to avoid damp places and/or dusty places. (3) Please do not store the product in places such as in a damp heated place or any place exposed to direct sunlight or excessive vibration. (4) Please use the products immediately after the package is opened, because the characteristics may be reduced in quality, and/or be degraded in solderability due to storage under poor conditions. (5) Please be sure to consult with our sales representative or engineer whenever the products are to be used in conditions not listed above. 4. Operating Environment This product is designed for application in an ordinary environment (normal room temperature, humidity and atmospheric pressure). Do not use the products in a chemical atmosphere such as chlorine gas, acid or sulfide gas. Characteristics might degrade by a chemical reaction with the material used in products. Notice (Soldering and Mounting) (2) Soldering condition by soldering iron for pin terminal type * Temperature: within 3505C * Time: within 3.00.5 sec. * Soldering part is the lead terminals excluding 1.5mm from product body (3) Reflow soldering condition for surface mounting type * Temperature profile: Fig. 1 * Number of times: Within 2 maximum Peak (260C max.) 260 230 Temperature (C) 1. Mounting When mounting a pin terminal type of product to the printed circuit board, please insert the pin terminal along the hole of the board. If the product is pressed so that the terminal is not in the hole, the pin terminal would be pushed into the inside of the product and the sounds might become unstable. 2. Double-sided through-hole Board Please avoid using a double-sided through-hole board. If the melted solder touched the base of a pin terminal, a part of the plastic case would melt and the sounds might become unstable. 3. Soldering Conditions (1) Flow soldering conditions for pin terminal type * Temperature: within 260C5C * Time: within 101 sec. * Soldering part is the lead terminals excluding 1.5mm from product body. Heating (230C) Pre-heating (150-180C) 100 Gradual Cooling 30 sec. min. 60 to 120 sec. 40 sec. max. 120 sec. min. Fig. 1 14 Continued on the following page. P37E.pdf !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. Feb.5,2018 !Caution * Notice Continued from the preceding page. 4. Washing Please avoid washing, since this product is not a sealed structure. 5. After Mounting the Product (1) If the product is floating from the printed circuit board, please do not push it. When pressing, the pin terminal is pushed inside the product and the sounds might become unstable. (2) Please do not apply force (shock) to the product. If force is applied, the case might come off. (3) If the case comes off, please do not reassemble. Even if it seems to have returned to the original, the sounds might become unstable. (4) Please do not blow air onto the product directly. Blown air applies force to the piezoelectric diaphragm through the sound emission hole; cracks could occur and then the sounds could become unstable. In addition, there is a possibility that the case could come off. 6. Flux or Coating Agent, etc., Various Solvents It is possible for a liquid solvent to penetrate inside the product, since this product is not a sealed structure. If a liquid penetrated inside and attached to the piezoelectric diaphragm, its vibration could be inhibited. If attaching to an electrical junction, the electric connection might fail. To prevent sound instability, please do not allow liquid to penetrate inside the product. 1 Notice (Handling) 1. Piezoelectric ceramic is used in this product. Please use care in handling, because ceramic is broken when excessive force is applied. 2. Please do not apply force to the piezoelectric diaphragm from the sound emission hole. If applying force, cracks occur and the sounds might become unstable. 3. Please do not drop the product or apply shock or temperature change to it. If so, the LSI might be destroyed by the charge (surge voltage) generated. Fig. 2 shows an example driving circuit using zener diode. Buzzer LSI Fig. 2 Protect Circuit Notice (Driving) 1. Ag migration might occur if DC voltage is applied to the product under a high humidity environment. Please avoid using it under high humidity and design the circuit not to apply DC voltage. 2. When driving the product by IC, please insert the resistance of 1 to 2k in series. The purpose is to protect the IC and to obtain stable sound. (Please see Fig. 2a). Inserting a diode in parallel to the product has the same effect. (Please see Fig. 3b) R IC IC Fig. 3a Fig. 3b 15 P37E.pdf !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. Feb.5,2018 Piezoelectric Sound Components RoHS Piezoelectric Buzzers 4.51 24.30.3 0.70.3 R1.0 9.70.3 2 This is a unified piezoelectric sounder that has a piezoelectric diaphragm of 3 terminals connected to a self-drive circuit, and it easily generates sound with only a DC power supply (DC3.0-15V). Using a suitably designed resonant system, this type can be used where large sound volumes are needed. 15.0 Applications 0.60.1 PKB24SPCH3601-B0 1. Gas alarms, burglar alarms 2. Air conditioners, microwave ovens and various types of microcomputer controlled home electronic appliances 3. Toys, games, and other simple electronic devices such as teaching aids Part Number PKB24SPCH3601-B0 (in mm) Tol.: 0.5 Sound Pressure Level (min.) Oscillating Frequency (kHz) Current Consumption (mA) Operating Voltage Range (Vdc) Operating Temp. Range (C) Storage Temp. Range (C) 90dB [12Vdc,10cm] 3.6 0.5kHz [12Vdc] 16 max. [12Vdc] 3.0 to 15.0 -20 to +70 -30 to +80 Voltage-Sound Pressure Level/Voltage-Consumption Current 110 20 100 Sound Pressure Level 15 10 90 Consumption Current 5 80 16 5 10 Input Voltage (Vdc) 15 0 Consumption Current (mA) Sound Pressure Level (dB) 25 !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. P37E.pdf Feb.5,2018 !Caution * Notice !Caution (Rating) Do not use the product beyond the rated temperature range and the rated voltage range. If using it beyond this range, characteristics might degrade. 2 Notice (Storage and Operating Condition) 1. Product Storage Condition Please store the products in a room where the temperature/humidity is stable and avoid places where there are large temperature changes. Please store the products under the following conditions. Temperature: -10 to +40C Humidity: 15 to 85%R.H. 2. Expiration Date on Storage Expiration date (shelf life) of the products is six months after delivery under the condition of a sealed and unopened package. Please use the products within six months after delivery. If you store the products for a long time (more than six months), use carefully because the products may be degraded in solderability due to storage under poor conditions. Please confirm solderability and characteristics for the products regularly. 3. Notice on Product Storage (1) Please do not store the products in a chemical atmosphere (Acids, Alkali, Bases, Organic gas, Sulfides and so on), because the characteristics may be reduced in quality, may be degraded in solderability due to storage in a chemical atmosphere. (2) Please do not store the products directly on the floor without anything under them to avoid damp places and/or dusty places. (3) Please do not store the product in places such as in a damp heated place or any place exposed to direct sunlight or excessive vibration. (4) Please use the products immediately after the package is opened, because the characteristics may be reduced in quality, and/or be degraded in solderability due to storage under poor conditions. (5) Please be sure to consult with our sales representative or engineer whenever the products are to be used in conditions not listed above. 4. Operating Environment This product is designed for application in an ordinary environment (normal room temperature, humidity and atmospheric pressure). Do not use the products in a chemical atmosphere such as chlorine gas, acid or sulfide gas. Characteristics might degrade by a chemical reaction with the material used in products. Notice (Soldering and Mounting) 1. Mounting When mounting a pin terminal type of product to the printed circuit board, please insert the pin terminal along the hole of the board. If the product is pressed so that the terminal is not in the hole, the pin terminal would be pushed into the inside of the product and the sounds might become unstable. 2. Double-sided through-hole Board Please avoid using a double-sided through-hole board. If the melted solder touched the base of a pin terminal, a part of the plastic case would melt and the sounds might become unstable. 3. Soldering Conditions (1) Flow soldering conditions for pin terminal type * Temperature: within +260C5C * Time: within 101 sec. * Soldering part is the lead terminals excluding 1.5mm from product body. (2) Soldering condition by soldering iron for pin terminal type * Temperature: within 3505C * Time: within 3.00.5 sec. * Soldering part is the lead terminals excluding 1.5mm from product body. 4. Washing Please avoid washing, since this product is not a sealed structure. 5. After Mounting the Product (1) If the product is floating from the printed circuit board, please do not push it. When pressing, the pin terminal is pushed inside the product and the sounds might become unstable. (2) Please do not apply force (shock) to the product. If force is applied, the case might come off. (3) If the case comes off, please do not reassemble. Even if it seems to have returned to the original, the sounds might become unstable. (4) Please do not blow air onto the product directly. Blown air applies force to the piezoelectric diaphragm through the sound emission hole; cracks could occur and then the sounds could become unstable. Continued on the following page. 17 P37E.pdf !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. Feb.5,2018 !Caution * Notice Continued from the preceding page. 2 6. Flux or Coating Agent, etc., Various Solvents It is possible for a liquid solvent to penetrate inside the product, since this product is not a sealed structure. If a liquid penetrated inside and attached to the piezoelectric diaphragm, its vibration could be inhibited. If attaching to an electrical junction, the electric connection might fail. To prevent sound instability, please do not allow liquid to penetrate inside the product. Notice (Handling) 1. Piezoelectric ceramic is used in this product. Please use care in handling, because ceramic is broken when excessive force is applied. 2. Please do not apply force to the piezoelectric diaphragm from the sound emission hole. If applying force, cracks occur and the sounds might become unstable. 3. Please do not drop the product or apply shock or temperature change to it. If so, the LSI might be destroyed by the charge (surge voltage) generated. Buzzer LSI Fig. 1 Protect Circuit Notice (Driving) 1. When using a piezoelectric buzzer, there is no need to prepare the oscillation circuit; it has an oscillation circuit. 2. Please set the sounding time more than 200 msec., when driving the piezoelectric sounder of self-drive or the piezoelectric buzzer as an intermittent sound. 3. Please don't block the sound emission hole with tape to control the sound volume. The oscillation circuit condition is set so as to obtain a stable sounding (oscillating) state under the condition that the front of sound emission hole is in an open state. If the sound emission hole is blocked with tape, then the oscillation condition changes and the sounds might become unstable. 4. Please don't put a resistor between the oscillation circuit and power supply to control the sound volume of the piezoelectric sounder or the piezoelectric buzzer. Doing so could cause an unstable sounding state like an abnormal oscillation or the oscillation stopping because of the change in oscillation conditions. Please insert a capacitor (about 1F) in parallel with the piezoelectric buzzer, if you need to control the sound volume. (Please see Fig. 2) 5. Please keep a distance of more than 15mm between the surface of sound emission hole and the surface of housing, when mounting the piezoelectric sounder of self-drive or the piezoelectric buzzer into your set. A shorter distance could cause an unstable sounding state like an abnormal oscillation or the oscillation stopping; because the oscillation conditions change, the acoustics are influenced by reflection. 18 +Vdc Buzzer Fig. 2 Capacitor (1F) P37E.pdf !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. Feb.5,2018 Piezoelectric Sound Components RoHS Piezoelectric Diaphragms Features 1. Clear sound 2. Ultra thin and lightweight 3. No contacts; therefore, noiseless and highly reliable 4. Low power consumption for voltage type oD oa Red ob Black Applications t T Clocks/Calculators/Digital camera/Various alarms (Burglar alarms, etc.) 3 External Drive Type Part Number Resonant Frequency (kHz) Resonant Capacitance Plate Size Element Size Electrode Size Thickness Plate Thickness oD oa ob T t Impedance (nF) (mm) (mm) (mm) (mm) (mm) () Plate Material 7BB-12-9 9.0 1.0kHz 1000 max. 8.0 30% [1kHz] 12.0 9.0 8.0 0.22 0.10 Brass 7BB-15-6 6.0 1.0kHz 800 max. 10.0 30% [1kHz] 15.0 10.0 9.0 0.22 0.10 Brass 7BB-20-3 3.6 0.6kHz 500 max. 20.0 30% [1kHz] 20.0 14.0 12.8 0.22 0.10 Brass 7BB-20-6 6.3 0.6kHz 350 max. 10.0 30% [1kHz] 20.0 14.0 12.8 0.42 0.20 Brass 7BB-20-6L0 6.3 0.6kHz 1000 max. 10.0 30% [1kHz] 20.0 14.0 12.8 0.42 0.20 Brass (with Lead Wire: AWG32 Length 50mm) 7BB-27-4 4.6 0.5kHz 200 max. 20.0 30% [1kHz] 27.0 19.7 18.2 0.54 0.30 Brass 7BB-27-4L0 4.6 0.5kHz 300 max. 20.0 30% [1kHz] 27.0 19.7 18.2 0.54 0.30 Brass (with Lead Wire: AWG32 Length 50mm) 7BB-35-3 2.8 0.5kHz 200 max. 30.0 30% [1kHz] 35.0 25.0 23.0 0.53 0.30 Brass 7BB-35-3L0 2.8 0.5kHz 200 max. 30.0 30% [1kHz] 35.0 25.0 23.0 0.53 0.30 Brass (with Lead Wire: AWG32 Length 50mm) 7BB-41-2 2.2 0.3kHz 250 max. 30.0 30% [1kHz] 41.0 25.0 23.0 0.63 0.40 Brass 7BB-41-2L0 2.2 0.3kHz 300 max. 30.0 30% [1kHz] 41.0 25.0 23.0 0.63 0.40 Brass (with Lead Wire: AWG32 Length 50mm) 7NB-31R2-1 1.3 0.5kHz 300 max. 40.0 30% [120Hz] 31.2 19.7 18.2 0.22 0.10 Nickel Alloy 19 P37E.pdf !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. Feb.5,2018 Design Procedure * Drive Method Design Procedure 3 d R 2a V fcav = h In general, man's audible frequency range is about 20Hz to 20kHz. Frequency ranges of 2kHz to 4kHz are most easily heard. For this reason, most piezoelectric sound components are used in this frequency range and the resonant frequency (fo) is generally selected in the same range. In general, the piezoelectric diaphragm is installed in a cavity to produce high sound pressure (Fig 1). The resonant frequency (fcav) of the cavity in Fig. 1 is obtained from Formula (1) (Helmholtz's Formula). Since the piezoelectric diaphragm and cavity have proper resonant frequencies, (fo) and (fcav) respectively, sound pressure in specific frequencies can be increased and a specific bandwidth can be provided by controlling both positions. a2 = V (R+1.3a) C 2 4a 2 ********************* (1) d 2h (R+1.3a) C 2 fcav : Resonant freq. of a cavity (Hz) c : Speed of sound (cm/sec) Ref) approx. 347 x 102cm/sec at 25C a : Radius of sound emitting hole (cm) d : Diameter of a supporting rim (cm) h : Depth of a cavity (cm) R: Wall thickness of a cavity (cm) Fig. 1 Sectional View of a Cavity Drive Method This method produces sound by driving the piezoelectric diaphragm with electric signals supplied from an external oscillating circuit such as a multivibrator. Using this method, the piezoelectric buzzer can work as a speaker. In this method, a mechanical oscillation Qm of the piezoelectric diaphragm is damped properly to provide a wider frequency band of the sound pressure. This is applied to the switching sounds of home electric appliances, key-in sounds of OA equipment, because it can provide multiple sounds, not just a single sound. Fig. 3 shows examples of the circuit to which the external drive method is applied: ( i ) represents a circuit driven by output signals of the unstable multivibrator; ( ii ) represents a circuit using 2 NAND gates, which is oscillated or stopped by ON/OFF operations of the input signal; ( iii ) represents a circuit driven by output signals of CMOS LSI. External Drive Circuit Fig. 2 Drive Procedure +V 510 20k 20k 510 0.01F 0.01F 1k 1k (i) +V CMOS LSI 1k 1M 0.001F 120k +V Drive Circuit 1k 1k Resonator Input Signal LCD ( ii ) ( iii ) Fig. 3 Examples of the External Drive Circuit 20 Buzzer !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. P37E.pdf Feb.5,2018 !Caution * Notice !Caution (Rating) Do not use the product beyond the rated temperature range. If using it beyond this range, characteristics might degrade. The rated voltage range is not specified; depending on the driving condition or the mounting method, the rated voltage range is different. In your evaluation, please use actual operating voltage. Notice (Storage and Operating Condition) 1. Product Storage Condition Please store the products in a room where the temperature/humidity is stable and avoid places where there are large temperature changes. Please store the products under the following conditions. Temperature: -10 to +40C Humidity: 15 to 85%R.H. 2. Expiration Date on Storage Expiration date (shelf life) of the products is six months after delivery under the condition of a sealed and unopened package. Please use the products within six months after delivery. If you store the products for a long time (more than six months), use carefully because the products may be degraded in solderability due to storage under poor conditions. Please confirm solderability and characteristics for the products regularly. 3. Notice on Product Storage (1) Please do not store the products in a chemical atmosphere (Acids, Alkali, Bases, Organic gas, Sulfides and so on), because the characteristics may be reduced in quality, may be degraded in solderability due to storage in a chemical atmosphere. (2) Please do not store the products directly on the floor without anything under them to avoid damp places and/or dusty places. (3) Please do not store the product in places such as in a damp heated place or any place exposed to direct sunlight or excessive vibration. (4) Please use the products immediately after the package is opened, because the characteristics may be reduced in quality, and/or be degraded in solderability due to storage under poor conditions. (5) Please be sure to consult with our sales representative or engineer whenever the products are to be used in conditions not listed above. 4. Operating Environment This product is designed for application in an ordinary environment (normal room temperature, humidity and atmospheric pressure). Do not use the products in a chemical atmosphere such as chlorine gas, acid or sulfide gas. Characteristics might degrade by a chemical reaction with the material used in products. 3 Notice (Soldering and Mounting) 1. Mounting When mounting the product on your set, pressing force should be applied to only the supporting part. When force is applied to the non-supporting part, cracks might occur, causing unstable sounds. 2. Soldering (1) Please consult with a Murata representative if you need to solder the lead wires to the product. We can deliver the products with soldered lead wires. When soldering, it is recommended to solder by heating the product (from 60 to 80C, more than 10 sec). Including the presence or absence of heating, please use after a thorough evaluation about soldering. Soldering condition is as follows. * Metal Plate Temperature of soldering iron: from 410 to 450C Soldering Time: within 3 sec. * Ag electrode Temperature of soldering iron: from 320 to 350C Soldering Time: within 0.5 sec. * Solder: Sn-Ag-Cu (Flux-cored solder) (2) Soldering condition of the lead wire to printed circuit board by using soldering iron. * Temperature: 3505C * Time: within 3.00.5 sec. Continued on the following page. 21 P37E.pdf !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. Feb.5,2018 !Caution * Notice Continued from the preceding page. Notice (Handling) 3 1. Piezoelectric ceramic is used in this product. Please use care in handling, because the ceramic is broken when excessive force is applied. 2. To avoid rusting, please do not touch the products with bare hands. 3. Please do not pull the lead wire of the product. Pulling may cause the lead wire to disconnect or to peel off the solder point. 4. When attaching a connector to the lead wires, please do not apply force to the soldering part. After attaching a connector, we recommend checking the connecting status. 5. Please do not bend the product or apply any force to it. Also, please do not press it with sharp objects. Applying force could cause cracks to occur in the piezoelectric ceramic, resulting in unstable sounds. 6. Please do not drop the product or apply shock or temperature change to it. If so, the LSI might be destroyed by the charge (surge voltage) generated. Fig.1 shows an example driving circuit using zener diode. Buzzer LSI Fig. 1 Protect Circuit Notice (Driving) 1. Ag migration might occur if DC voltage is applied to the product under a high humidity environment. Please avoid using it under high humidity and design the circuit not to apply DC voltage. 2. When driving the product by IC, please insert the resistance of 1 to 2k in series. The purpose is to protect the IC and to obtain stable sound. (Please see Fig. 2a). Inserting a diode in parallel to the product has the same effect. (Please see Fig. 2b). 22 R IC IC Fig. 2a Fig. 2b P37E.pdf !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. Feb.5,2018 Oscillating System Basically, the sound source of a piezoelectric sound component is a piezoelectric diaphragm. A piezoelectric diaphragm consists of a piezoelectric ceramic plate that has electrodes on both sides and a metal plate (brass or stainless steel, etc.). A piezoelectric ceramic plate is attached to a metal plate with adhesives. Fig. 2 shows the oscillating system of a piezoelectric diaphragm. Applying DC voltage between electrodes of a piezoelectric diaphragm causes mechanical distortion due to the piezoelectric effect. For a misshapen piezoelectric element, the distortion of the piezoelectric element expands in a radial direction, and the piezoelectric diaphragm bends toward the direction shown in Fig. 2 (a). The metal plate bonded to the piezoelectric element does not expand. Conversely, when the piezoelectric element shrinks, the piezoelectric diaphragm bends in the direction shown in Fig. 2 (b). Thus, when AC voltage is applied across electrodes, the bending shown in Fig. 2 (a) and Fig. 2 (b) is repeated as shown in Fig. 2 (c), producing sound waves in the air. Electrode Piezoelectric Ceramics Electrode Piezoelectric Ceramics Piezoelectric Element Piezoelectric Diaphragm Metal Plate Fig. 1 Structure of Piezoelectric Diaphragm (a) Extended State (c) AC Voltage Applied (b) Shrinked State Fig. 2 Oscillation System 23 P37E.pdf !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. Feb.5,2018 To Raise Sound Pressure Level (S.P.L.) Frequency Characteristics of Sound Pressure Level PKLCS1212E4001-R1 6.0Vp-p 3.0Vp-p 1.5Vp-p 100 Sound Pressure Level (dB) It is probable that the S.P.L. of Piezoelectric sound components is higher when the input voltage is higher because Piezoelectric sound components are driven by voltage. The SPL when the input voltage being converted from V1 to V2 can be calculated from the following formula. SPL at V2 = SPL at V1 + 20log (V2/V1) V1: previous input voltage V2: increased input voltage Therefore, S.P.L. is theoretically getting 6dB higher as the input voltage is twice as high. Fig. 1 represents S.P.L. - frequency characteristics for PKLCS1212E4001-R1 in which the input voltage is varied. We can see that S.P.L. is approximately getting 6dB higher as the input voltage is twice as high. 90 80 70 60 50 0 1 2 3 4 5 Distance: 10cm Wave form: Square Wave Fig. 1 Frequency Characteristics of Sound Pressure Level In summary, the following are typical examples of raising S.P.L. (1) ( i ), ( ii ), ( iii ) in Fig. 3 (Examples of the External Drive Circuit) (page 19), input DC voltage for Piezoelectric sound components should be getting higher. Variable range of input voltage should be less than maximum input voltage. (2) In a case that is driven by IC directly like as Fig. 2, input voltage of Piezoelectric sound components should be twice as high because of the BTL (Bridge Tied Load) drive circuit, which includes an inverter. Fig. 2 Example of BTL Drive Circuit by 1-port Output IC for Buzzer 24 6 Frequency (kHz) P37E.pdf !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. Feb.5,2018 Measuring Method Measuring Procedure Measurement of Resonant Frequency and Resonant Impedance Measuring Terminal When the piezoelectric diaphragm oscillates freely in air, the node does not move as shown in Fig. 1. With this point held with a measuring terminal, the resonant frequency (f0) and resonant impedance (R0) are measured in the constant-current circuit as shown in Fig. 2. Measuring Procedure 1) Connect the switch to side "a" and adjust frequency of the oscillator to read the frequency and the voltage when the voltmeter indicates a minimum value. 2) Next connect the switch to side "b" and vary the variable resistor to have the same voltage as in 1). Then, read the value of the resistor. 3) The resonant frequency (f0) can be obtained from 1) and the resonant impedance (R0) from 2). Note: Actual measurement is performed using a measuring unit in accordance with the above principles. Node Supporting Method Fig. 1 Measurement of Piezoelectric Diaphragm Oscillator (1Vrms max.) Frequency Counter S.P.L.(dB) [under actual operating conditions] = S.P.L.(dB) [value specified in catalog] +20 log (B/A) ******************************************(2) a b Switch Variable Resistor Piezoelectric Diaphragm Measurement of Sound Pressure Level (S.P.L.) The sound pressure level is measured with a sound pressure level meter as shown in Fig. 3. Note: The relation between sound pressure level and distance between sound pressure level and voltage can be expressed with Formula (2). The value of the sound pressure level under different operating conditions can be easily calculated using values specified in the catalog. Voltmeter R1 (10k Around) Fig. 2 Measurement Set-Up of Resonant Freq. and Resonant Impedance Piezoelectric Sounder (Self-Drive) Oscillation Circuit Measuring Distance Sound Pressure Level Meter Frequency Counter Fig. 3 Measurement Set-Up of S.P.L. In case of relation with distance: A = Actual distance B = Distance specified in catalog In case of relation with voltage: A = Voltage specified in catalog B = Actual operating voltage 25 P37E.pdf !Note * Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. * This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. Feb.5,2018 Minimum Quantity Product Names o Piezoelectric Sounders Part Number Minimum Quantity (pcs.) O330mm Reel PKLCS1212E2000-R1 1000 PKLCS1212E20A0-R1 1000 PKLCS1212E2400-R1 1000 PKLCS1212E24A0-R1 1000 PKLCS1212E4001-R1 1000 PKLCS1212E40A1-R1 1000 PKMCS0909E4000-R1 2000 PKMCS1818E20A0-R1 250 Bulk (Box) 500 PKM13EPYH4000-A0 PKM13EPYH4002-B0 1980 PKM17EPP-2002-B0 1000 PKM17EPPH4001-B0 1200 PKM17EPPH4002-B0 1200 PKM22EPH2001 360 PKM22EPH2002 270 PKM22EPH2003 270 PKM22EPPH2001-B0 750 PKM22EPPH2002-B0 750 PKM22EPPH4001-B0 900 PKM22EPPH4002-B0 900 PKM22EPPH4005-B0 750 PKM22EPPH4007-B0 750 PKM22EPPH4012-B0 750 o Piezoelectric Buzzers PKB24SPCH3601-B0 650 o Piezoelectric Diaphragms 7BB-12-9 5120 7BB-15-6 8000 7BB-20-3 3000 7BB-20-6 1800 7BB-20-6L0 7BB-27-4 26 Ammo Pack 600 1500 7BB-27-4L0 600 7BB-35-3 800 7BB-35-3L0 400 7BB-41-2 400 7BB-41-2L0 250 7NB-31R2-1 3000 P37E.pdf Feb.5,2018 Cat. No. P37E-28 Global Locations For details please visit www.murata.com Note 1 Export Control For customers outside Japan: No Murata products should be used or sold, through any channels, for use in the design, development, production, utilization, maintenance or operation of, or otherwise contribution to (1) any weapons (Weapons of Mass Destruction [nuclear, chemical or biological weapons or missiles] or conventional weapons) or (2) goods or systems specially designed or intended for military end-use or utilization by military end-users. For customers in Japan: For products which are controlled items subject to the "Foreign Exchange and Foreign Trade Law" of Japan, the export license specified by the law is required for export. 2 Please contact our sales representatives or product engineers before using the products in this catalog for the applications listed below, which require especially high reliability for the prevention of defects which might directly damage a third party's life, body or property, or when one of our products is intended for use in applications other than those specified in this catalog. 1 Aircraft equipment 2 Aerospace equipment 3 Undersea equipment 4 Power plant equipment 5 Medical equipment 6 Transportation equipment (vehicles, trains, ships, etc.) 7 Traffic signal equipment 8 Disaster prevention / crime prevention equipment 9 Data-processing equipment 10 Application of similar complexity and/or reliability requirements to the applications listed above Murata Manufacturing Co., Ltd. www.murata.com 3 Product specifications in this catalog are as of January 2018. They are subject to change or our products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering. If there are any questions, please contact our sales representatives or product engineers. 4 Please read rating and CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. 5 This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. 6 Please note that unless otherwise specified, we shall assume no responsibility whatsoever for any conflict or dispute that may occur in connection with the effect of our and/or a third party's intellectual property rights and other related rights in consideration of your use of our products and/or information described or contained in our catalogs. In this connection, no representation shall be made to the effect that any third parties are authorized to use the rights mentioned above under licenses without our consent. 7 No ozone depleting substances (ODS) under the Montreal Protocol are used in our manufacturing process. Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Murata: PKM17EPPH40S1-B0 7BB-20-6C 7BB-27-4 PKM17EWH-2001 PKM17EWH-4000 7BB412C 7NB411 PKM22EPPH40S1-B0 PKM22EPTH2002-B0 PKM22EPH2003 PKM22EPH2002 7BB1210 7BB-27-4CL0