PL IA NT CO M *R oH S Features RoHS compliant* Conductive plastic or cermet Linear and audio tapers PC board and bushing mount Gangable Metal bushing and shaft Sealed for board washing 51/53 - Sealed 1/2 " (12.5 mm) Square Control Electrical Characteristics1 Conductive Plastic Cermet Standard Resistance Range Linear ...................................................................................................1 K ohms to 1 megohm ......................... 150 ohms to 1 megohm Audio ....................................................................................................1 K ohms to 1 megohm ......................... 1 K ohms to 1 megohm Total Resistance Tolerance Linear Tapers ........................................................................................10 % or 20 % .................................... 10 % or 5 % Audio Tapers ........................................................................................10 % or 20 % .................................... 10 % Independent Linearity .................................................................................5 % ...................................................... 5 % Absolute Minimum Resistance ...................................................................2 ohms maximum .................................. 2 ohms maximum Effective Electrical Angle ............................................................................270 5 .............................................. 270 5 Contact Resistance Variation .....................................................................2 % ........................................................ 2 % Dielectric Withstanding Voltage (MIL-STD-202 - Method 301) Sea Level ..............................................................................................1,500 VAC minimum .............................. 1,500 VAC minimum 70,000 ..................................................................................................500 VAC minimum ................................. 500 VAC minimum Insulation Resistance .................................................................................1,000 megohms minimum ..................... 1,000 megohms minimum Power Rating At 70 C (Derate To 0 At 125 C) (Voltage Limited By Power Dissipation or 350 VAC, Whichever Is Less) Linear Tapers ........................................................................................0.5 watt.................................................. 1.0 watt Audio Tapers ........................................................................................0.25 watt................................................ 0.5 watt Theoretical Resolution ................................................................................Essentially infinite .................................. Essentially infinite Environmental Characteristics1 Operating Temperature Range ...................................................................+1 C to +125 C ................................... +1 C to +125 C Storage Temperature Range ......................................................................-55 C to +125 C.................................. -55 C to +125 C Temperature Coefficient Over Storage Temperature Range ......................1,000 ppm/C ...................................... 150 ppm/C Vibration (Single Section) ...........................................................................15 G ....................................................... 15 G Total Resistance Shift ...........................................................................2 % maximum ..................................... 2 % maximum Voltage Ratio Shift ................................................................................5 % maximum ..................................... 5 % maximum Shock (Single Section) ...............................................................................30 G ....................................................... 30 G Total Resistance Shift ...........................................................................+2 % maximum ..................................... 2 % maximum Voltage Ratio Shift ................................................................................5 % maximum ..................................... 5 % maximum Load Life.....................................................................................................1,000 hours ........................................... 1,000 hours Total Resistance Shift ...........................................................................10 % TRS maximum ........................... 5 % TRS maximum Rotational Life (No Load) ............................................................................50,000 cycles ........................................ 25,000 cycles Total Resistance Shift ...........................................................................10 % TRS maximum ........................... 10 % TRS maximum Contact Resistance Variation @ 25,000 Cycles ...................................2 % ...................................................... 4 % Moisture Resistance (MIL-STD-202, Method 103, Condition B) Total Resistance Shift ...........................................................................10 % TRS ............................................ 5 % TRS IP Rating .....................................................................................................IP 64 ...................................................... IP 64 Mechanical Characteristics Stop Strength ............................................................................................................................................................................................... 56 N-cm (5 lb.-in.) Mechanical Angle ...................................................................................................................................................................................................... 290 5 Torque Starting (Dual Sections).............................................................................................................................................. +0.35 N-cm (+0.5 oz.-in.) maximum Running (Single Section) ............................................................................................................................................. 0.15 to 1.4 N-cm (0.2 to 2.0 oz.-in.) Running (Dual Section) ................................................................................................................................................ 0.35 to 1.8 N-cm (0.5 to 2.5 oz.-in.) Mounting (Torque on Bushing) .......................................................................................................................... 1.7 to 2.0 N-m (15 to 18 lb.-in.) maximum Weight (Single Section).............................................................................................................................................................................................. 5.5 grams (Additional Section) ............................................................................................................................................................................................. 3.0 grams Terminals ................................................................................................................................................................................................... PC pin or solder lug Soldering Condition .................................................................. Recommended hand soldering using Sn95/Ag5 no clean solder, 0.025 " wire diameter. Maximum temperature 399 C (750 F) for 3 seconds. No wash process to be used with no clean flux. Part can be wave soldered at 260 C (500 F) for 5 seconds, no wash process with no clean flux. Marking.................................................................................................................. Manufacturer's trademark, part number, resistance value and date code. Ganging (Multiple Section Potentiometer) ............................................................................................................................................ 2 sections maximum** Hardware ...........................................One lockwasher and one mounting nut is shipped with each potentiometer, except where noted in the part number. 1At room ambient: +25 C nominal and 50 % relative humidity nominal, except as noted. ** Additional sections available on special request with higher minimum order quantities. *RoHS Directive 2002/95/EC Jan 27, 2003 including Annex. Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. 51/53 - Sealed 1/2 " (12.5 mm) Square Control Product Dimensions PACKAGE DIMENSIONS 16.51 0.25 (.650 .010) FMS 7.62 (.300) MODEL 51 5.08 (.200) 6.35 (.250) 8.89 0.18 (.350 .007) .64 "L" ( .025) 12.5 (.492) 6.25 (.246) 11.00 DIA. (.432) 7.00 (.275) 1.32 (.052) TYP. 2.54 (.100) CL OF POT 0.74 (.029) 0.30 (.0118) 7.62 0.30 (.300 .012) 6.60 0.38 (.260 .015) 2.54 (.100) 2.54 (.100) .66 .05 3X (.026 .002) 5.08 0.30 (.200 .012) (SINGLE AND DUAL MODULE SHOWN) 12.5 (.492) .64 ( .025) 6.25 (.246) 11.00 DIA. (.432) 7.00 (.275) 3 2.40 (.094) 2 1 5.0 0.51 (.197 .020) 0.90 (.036) 1.32 0.25 (.052 .010) 2X 5.08 0.30 (.200 .012) 2X 5.08 (.200) 5.08 (.200) 2X 1.80 (.071) 6.60 0.38 (.260 .015) .41 .05 ( .016 .002) 7.62 0.30 (.300 .012) 6.35 .25 (.250 .010) (DOUBLE MODULE FRONT AND REAR BRACKET SHOWN) SOLDER LUG TERMINALS MODEL 53 0.74 (.029) 0.91 .051 (.036 .002) 1.02 (.040) DIA. 6 PLCS. 2.54 (.100) TERMINAL SPACING PACKAGE DIMENSIONS PCB MOUNTING BRACKET "L" 1.27 (.050) DIA. 4 PLCS. 4.70 (.185) ELECTRICAL SCHEMATIC 2.54 (.100) CCW 3 1 CW 2 ANTI-ROTATION LUG (Style "A", 90 CW Shown) SHAFT FLAT ORIENTATION 0.80 0.30 (.031 .012) 0.41 (.016) SUGGESTED PANEL LAYOUTS The Model 50 can be used with either of the two panel layouts shown below. 5.70 (.224) 6.20 (.244) 1.52 (.060) 6.35 (.250) 132 5 CCW END 2.20 (.087) BUSHING DIAMETER TOLERANCE +0.80 ( +.031) DIMENSIONS: MM (INCHES) 2.77 (.109) BUSHING DIAMETER TOLERANCE +0.80 ( +.031) .25 FOR TOLERANCES SHOWN: .XX = (.010) .XXX = .13 (.005) SHAFT DIMENSIONS .80 (1/32) Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. 51/53 - Sealed 1/2 " (12.5 mm) Square Control Shaft/Bushing Styles 9.53 (.375) 3/8-32UNEF-2A How To Order 1.60 0.25 OPT. (.063 .010) 1.194 0.10 OPT. (.047 .004) A Style Bushing STD. LENGTH `L' .500 (12.7) .625 (15.88) .750 (19.05) .875 (22.23) 1.000 (25.4) 51 A A D - B 28 - 6.35 9.53 SHAFT BUSHING (.250) (.375) 6.35 (.250) 0.79 0.25 OPT. (.031 .010) 1/4-32UNEF-2A 0.79 0.10 OPT. (.031 .004) 3.18 6.35 SHAFT BUSHING (.125) (.250) 9.53 (.375) MAX. FLAT LENGTH 1.52 0.25 OPT. (.060 .010) 3/8-32UNEF-2A 6.35 9.53 SHAFT BUSHING (.250) (.375) .315 (8.0) M6 X .075-6g 15.88 (.625) 5.49 0.10 OPT. (.216 .005) 1.52 0.25 (.060 .010) 0.79 0.10 (.031 .004) S Style Bushing STD. LENGTH `L' .394 (10.0) .512 (13.0) .630 (16.0) .866 (22.0) .984 (25.0) 3.0 6.0 SHAFT BUSHING (.118) (2.36) 8.0 (.315) 1.52 0.25 (.060 .010) 0.79 0.10 (.031 .004) M7 X .075-6g 4.0 7.0 SHAFT BUSHING (.157) (2.75) 9.5 (.374) 1.80 0.25 (.071 .010) 1.00 0.10 (.039 .004) M10 X 0.75-6g 6.0 10.0 SHAFT BUSHING (.236) (.394) DIMENSIONS: MM (INCHES) U Style Bushing STD. LENGTH `L' .394 (10.0) .512 (13.0) .630 (16.0) .866 (22.0) .984 (25.0) R Style Bushing STD. LENGTH `L' .512 (13.0) .630 (16.0) .866 (22.0) .984 (25.0) 15 L RoHS IDENTIFIER Code Description L Compliant C Style Bushing STD. LENGTH `L' .375 (9.53) .500 (12.7) .625 (15.88) .750 (19.05) .875 (22.23) 1.000 (25.4) A Style Bushing Flatted Shaft STD. LENGTH `L' .625 (15.88) .750 (19.05) .875 (22.23) 1.000 (25.4) A MOUNTING BRACKET/ ANTI-ROTATION LUG Code Description AR Lug 90 CW A No AR Lug or Bracket D Front Bracket L Rear Bracket M Front and Rear Bracket N # SECTIONS/DETENTS Code Description Single No Detent A Double No Detent B Single w/Center Detent E Double w/Center Detent F ELEMENT TAPER TYPE/TOLERANCE Code Description (A) Linear Cermet 10 % (H) Linear Cermet 5 % (B) (E) Linear C-P 20 % Linear C-P 10 % (C) CW Audio Cermet 10 % CCW Audio Cermet 10 % (F) BUSHING CONFIGURATION Code Description 3/8 " D x 3/8 " L A 1/4 " D x 1/4 " L C 10 mm D x 9.5 mm L R 6 mm D x 8 mm L S 7 mm D x 8 mm L U MODEL Code Description 51 PC Pins (.100 " centers) 53 Solder Lugs Code B C D E R T U (D) (S) CW Audio C-P 20 % CW Audio C-P 10 % (G) CCW Audio C-P 20 % CCW Audio C-P 10 % (T) (Y) CW Dual Audio Taper C-P 20 % AVAILABLE ONLY IN SHAFT TYPE BUSHINGS LENGTHS Description Code Description Single Slotted 1/4 "D A 24,28 Single Flatted 1/4 "D A 20,24,28,32 Single Plain 1/8 "D C 16,20,24,28 Single Slotted 1/8 "D C 12,16,20,24,28 Single Slotted 6 mmD R 16,22,25 Single Slotted 4 mmD U 16,22,25 Single Slotted 3 mmD S 16,22,25 RESISTANCE (CODE) VALUE IN OHMS (28) -- 150 (14) -- 7.5 K (06) -- 200 (15) -- 10 K (07) -- 250 (30) -- 15 K (08) -- 500 (16) -- 20 K (09) -- 750 (17) -- 25 K (10) -- 1 K (18) -- 50 K (29) -- 1.5 K (19) -- 75 K (11) -- 2 K (20) -- 100 K (12) -- 2.5 K (23) -- 500 K (13) -- 5 K (25) -- 1 M (10) -- 1 K (18) -- 50 K (12) -- 2.5 K (20) -- 100 K (13) -- 5 K (22) -- 250 K (15) -- 10 K (23) -- 500 K (16) -- 20 K (25) -- 1 M (17) -- 25 K (10) -- 1 K (18) -- 50 K (12) -- 2.5 K (20) -- 100 K (13) -- 5 K (23) -- 500 K (15) -- 10 K (25) -- 1 M (17) -- 25 K (10) -- 1 K (18) -- 50 K (12) -- 2.5 K (20) -- 100 K (13) -- 5 K (22) -- 250 K (15) -- 10 K (23) -- 500 K (17) -- 25 K (25) -- 1 M (10) -- 1 K (18) -- 50 K (12) -- 2.5 K (20) -- 100 K (13) -- 5 K (22) -- 250 K (15) -- 10 K (23) -- 500 K (17) -- 25 K (25) -- 1 M (10) -- 1 K (18) -- 50 K (12) -- 2.5 K (20) -- 100 K (13) -- 5 K (22) -- 250 K (15) -- 10 K (23) -- 500 K (17) -- 25 K (25) -- 1 M SHAFT LENGTH (FMS) Code Description 12 3/8 " 16 1/2 " 20 5/8 " 24 3/4 " 28 7/8 " 32 1" Metric 16 16 mm 22 22 mm 25 25 mm AVAILABLE ONLY IN BUSHING Code C A, C A, C A, C A, C A, C R, S, U R, S, U R, S, U Boldface features are Bourns standard options. All others are available with higher minimum order quantities. REV. 09/11 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.