SM-3/31 INTERNAL STRUCTURE RoHS compliant 1 9 8 7 6 1 2 RoHS compliant Fine adjustment is possible Automatic mounting is possible (Taping) Reflow soldering is possible Sealed construction (Washable: Refer to page 754.) Housing Base element Ceramic 3 Ag-Pd 4 RuO2 5 6 Electrode Ag-Pd cermet Resistive element RuO2 cermet UL94V-0 Epoxy Adhesive Multi metal alloy Wiper -- -- 7 Terminal pin Copper alloy, Sn-Cu-plated 8 PA UL94V-0 9 -- Rotor gear Polyamide Shaft Brass, Nickel-plated PART NUMBER DESIGNATION S M - 3 T W 1 k ( 1 0 2 ) Series name Electrical turn Blank11 15 5 turns Resistance code Resistance value 11 turns Product shape (Shape of terminal) Form of packaging T Blank A, WJ - B Taping (Reel) Bulk in plastic bag Please refer to the LIST OF PART NUMBERS when placing orders. 681 J-hook Gull wing L E D RoHS 754 FEATURES Material Flammability PPS UL94V-0 Polyphenylenesulphide Part name 2 3 4 5 RoHS 3 mm SMD SURFACE MOUNT CERMET TRIMMERS SM-3/31 SURFACE MOUNT TRIMMERS LIST OF PART NUMBERS Adjustment position Electrical turns Shape of terminal Taping (reel) Plastic bag W J- SM-3TW SM-3W A J- (J-hook) B (Gull wing) SM-3TA SM-3A Side adjustment SM-3TB SM-3B W J- SM-31TW SM-31W A J- Top adjustment 11 Top adjustment 5 Side adjustment (J-hook) (J-hook) Pieces in package SM-31B 500 pcs./reel 50 pcs./pack B DC200 V Resistance law DC200 V or power rating, whichever is smaller 245 3 C, 2 ~ 3 s Solderability 100 mA 100 mA or power rating, whichever is smaller 5 N {0.51 kgf} 10 s Shear (Adhesion) 1 % 3 3 % 3 - 65 ~ 150 C 100 10-6/C maximum 90 mm Substrate bending 1 % or 3 , whichever is greater 3 mm Temp. coefficient Insulation resistance 5 N {0.51 kgf} 10 s Pull-off strength { } Reference only ENVIRONMENTAL CHARACTERISTICS 100 M minimum (DC500 V) Test item Test conditions AC600 V, 60 s -65 ~ 150 C (0.5 h), 5 cycles Approx. 0.10 g -10 ~ 65 C ( 80 ~ 98 %), 10 cycles, 240 h 981 m/s2, 6 ms 6 directions for 3 times each Dielectric strength Net weight Thermal shock Humidity Shock Reflow profile for soldering heat evaluation (C) 250 Peak : 250 +5 0 Vibration C 150 180 C 150 C - 65 C, 2 h 150 C, 250 h 90 30 s 100 50 High temp. exposure Immersion seal 30 10 s Heating time Soldering heat Soldering Zone 85 C, 60 s 255 Reflow : Peak temperature 255 C (Please refer to the profile below.) Manual soldering350 10 C, 3 ~ 4 s R/R S.S. Reflow : two times maximum 682 Specifications [R/R 2 %] [S.S. 2 %] [R/R 3 %] [R/R 1 %] [S.S. 1 %] 10 ~ 2000 Hz, 3 directions, 12 times each 70 C, 0.125 W, 1000 h Low temp. operation Pre Heating Zone (Amplitude) 1.52 mm or (Acceleration) 196 m/s2, Load life Over 230 C 200 5 s, 1 Width 90 mm, bend 3 mm, 5 s, 1 time 3 % or 3 , whichever is greater Operating temp. range Clutch action 5 N {0.51 kgf} minimum Thrust to shaft C.R.V. Fig. 1 200 cycles [R/R (2 +3 %)] Rotational life 11 turns (SM-3) / 5 turns (SM-31) End resistance Mechanical stop Effective electrical turn 10 k 5 mN*m {51 gf*cm} maximum Linear law 1 k The above part numbers are all available with the respective combination of <Nominal resistance values> (Fig. 1). Verify the above part numbers when placing orders. Taping specification is not sold separately and must be purchased in reel units. Operating torque 0.125 W (70 C) 0 W (150 C) Maximum wiper current 500 MECHANICAL CHARACTERISTICS 20 % Resistance tolerance Temperature 5 k 2 M 50 ~ 2 M Nominal resistance range Maximum input voltage 200 SM-31TB ELECTRICAL CHARACTERISTICS Power ratings 2 k 50 k 100 k 200 k 500 k 1 M 100 SM-31A 50 20 k Fig. 1 SM-31TA (J-hook) B (Gull wing) L E D Form of packaging Nominal resistance values [R/R 3 %] [S.S. 2 %] [R/R 2 %] [S.S. 2 %] [R/R 3 %] [S.S. 2 %] No leaks (No continuous bubbles) [R/R 1 %] Change in total resistance Setting stability SM-3/31 Resistance code Maximum input voltage (V) Maximum wiper current (mA) 50 100 200 500 500 101 201 501 2.50 3.53 5.00 7.91 50.0 35.4 25.0 15.8 1k 2k 5k 10 k 20 k 50 k 102 202 502 103 203 503 11.2 15.8 25.0 35.4 50.0 79.1 11.2 7.91 5.00 3.54 2.50 1.58 100 k 200 k 500 k 1M 2M 104 204 504 105 205 112 158 200 200 200 1.12 0.79 0.40 0.20 0.10 Nominal resistance values () MAXIMUM INPUT RATINGS L E D RECOMMENDED P.C.B. PAD OUTLINE DIMENSIONS SM-3A/31A (Unit : mm) SM-3B/31B 1.3 1.3 1.3 4 0 0 1.6 1.6 1.6 0 4.4 1.3 2.43 3.12 1.6 1.6 2 1.3 2.8 0.9 2.8 2 0.9 0.9 2.8 Also available to place as the above. 0.9 2.8 0 Note) The zero point is the center of mounting. OUTLINE DIMENSIONS Unless otherwise specified, tolerance : 0.3 (Unit : mm) SM-3W/31W Top adjustment 1 3 CW rotation 2 Resistance code & Production date code 1 0.8 1 3 2.3 3.2 3.5 3.9 0.6 2.8 2 0.8 3.9 4.2 0.4W x 1.3L x 0.3D 683 Note the terminal position. SM-3W/31W 0 SURFACE MOUNT TRIMMERS SM-3/31 1 0.4W x 1.3L x 0.3D 3 CW rotation 2 Resistance code & Production date code Resistance code & Production date code Note the terminal position. 0.4W x 1.3L x 0.3D 3.9 1 Unless otherwise specified, tolerance : 0.3 (Unit : mm) SM-3B/31B Side adjustment 2.5 OUTLINE DIMENSIONS SM-3A/31A Side adjustment 2.5 SURFACE MOUNT TRIMMERS 3.4 3 - 0.8 2 3.9 1 3.4 2 5.3 3.9 3 - 0.8 3.9 2 - 0.6 1 2.8 3 2 - 0.6 2.8 1 PACKAGING SPECIFICATIONS <Taping packaging specifications> Taping version is packaged in 500 pcs. per reel. Orders will be accepted for units of 500 pcs., i.e., 500, 1000, 1500 pcs., etc. Taping version is boxed with one reel. 500 / 500 500 1000 1500 ... 1 Maximum number of consecutive missing pieces = 2 Leader length and reel dimension are shown in the diagrams below. 2 JIS C 0806-3 EMBOSSED TAPE DIMENSIONS Empty Filled REEL DIMENSIONS Conforms to JIS C 0806-3 EIAJ ET-7200A In accordance with EIAJ ET-7200A (Unit: mm) 13 Empty 210.8 20.5 End Head 40 mm min. Direction of feed +1 0 +1 0 3 60 4.4 L E D 20 pitches min. Leader 130.2 400 mm min. 0 180 -1.5 684 15.41 SM-3/31 SURFACE MOUNT TRIMMERS SM-3TW/31TW 1.75 0.1 1. A 0.4 0.1 (SM-3W) Installation example (SM-3W) 12 +0.3 -0.1 5.5 0.05 .1 +0 0 5 3 1 A-A Cross section A-A 4.7 .1 +0 0 5 1. 3 0.4 0.1 (SM-3A) Installation example (SM-3A) +0.3 12 -0.1 5.5 0.05 1 A 3.9 8 0.1 2 A-A Cross section A-A .1 +0 0 5 1. 1.75 0.1 SM-3TB/31TB 4 0.1 2 0.05 A 3 0.4 0.1 (SM-3B) Installation example (SM-3B) +0.3 12 -0.1 5.5 0.05 1 A 2 3.9 8 0.1 A-A Cross section A-A <Bulk pack specifications> Unit of bulk in a plastic bag is 50 pcs. per pack. Boxing of bulk in a plastic bag is performed with 200 pcs. per box. 50 / 200 685 L E D 4 0.1 2 0.05 A 1.75 0.1 SM-3TA/31TA 8 0.1 A 2 4 0.1 2 0.05