SM31B205

SURFACE MOUNT CERMET TRIMMERS RoHS compliant SM-3/31 INTERNAL STRUCTURE ① ⑨ ② ③ ④ ⑤ ⑧ ⑦ ⑥ Part name ■ FEATURES ● ● ● ● ● ● RoHS compliant Fine adjustment is possible Automatic mounting is possible (Taping) Reflow soldering is possible Sealed construction (Washable: Refer to page 698.) Resin material is UL Recognized 94V-0 Material ① Housing ② Base element ③ Electrode Ag-Pd cermet ④ Resistive element RuO2 cermet ⑤ Adhesive ⑥ Wiper ⑦ Terminal pin ⑧ Rotor gear ⑨ Shaft Polyphenylenesulphide Ceramic Epoxy Multi metal alloy Copper alloy, Sn-Cu-plated Polyamide Brass, Nickel-plated ■ PART NUMBER DESIGNATION S M - 3 □ T W 1 kΩ ( 1 0 2 ) Series name 　Resistance code Electrical turn 　Resistance value Blank：11 turns 1：5 turns Form of packaging T：Taping (Reel) Blank：Bulk in plastic bag ※ Please refer to the LIST OF PART NUMBERS when placing orders. Product shape (Shape of terminal) A：J-hook (Side adjustment) B：Gull wing(Side adjustment) W：J-hook (Top adjustment) SM-3/31 SURFACE MOUNT TRIMMERS ■ LIST OF PART NUMBERS Adjustment position Electrical turns 〈Nominal resistance values〉 Top adjustment 11 Side adjustment Top adjustment 5 Side adjustment Taping (reel) Plastic bag W (J-hook) SM-3TW SM-3W A (J-hook) SM-3TA SM-3A B (Gull wing) SM-3TB SM-3B W (J-hook) SM-31TW SM-31W A (J-hook) SM-31TA SM-31A B (Gull wing) SM-31TB SM-31B 500 pcs./reel Pieces in package 100 Ω 2 kΩ 5 kΩ 50 kΩ 100 kΩ 200 kΩ 500 kΩ 1 MΩ 200 Ω 500 Ω 1 kΩ 2 MΩ 10 kΩ ■ MECHANICAL CHARACTERISTICS 50 Ω ~ 2 MΩ Operating torque 5 mN·m {51 gf·cm} maximum ± 20 % Mechanical stop Clutch action Resistance tolerance Fig. 1 ※ The above part numbers are all available with the respective combination of (Fig. 1). ※ Verify the above part numbers when placing orders. ※ Taping specification is not sold separately and must be purchased in reel units. 50 pcs./pack ■ ELECTRICAL CHARACTERISTICS Nominal resistance range 50 Ω 20 kΩ Form of packaging Shape of terminal Power ratings 0.125 W (70 °C) 0 W (150 °C) Rotational life 200 cycles [ Δ R/R ≦ ± (2 Ω +3 %)] Resistance law Linear law Thrust to shaft 5 N {0.51 kgf} minimum Maximum input voltage DC200 V or power rating, whichever is smaller Solderability 245 ± 3 °C, 2 ~ 3 s Maximum wiper current 100 mA or power rating, whichever is smaller Shear (Adhesion) 5 N {0.51 kgf} 10 s Effective electrical turn 11 turns (SM-3) / 5 turns (SM-31) Substrate bending Width 90 mm, bend 3 mm, 5 s, 1 time End resistance 1 % or 3 Ω, whichever is greater C.R.V. 3 % or 3 Ω, whichever is greater Operating temp. range Temp. coefficient Insulation resistance ± 100 10-6/°C maximum 100 MΩ minimum (DC500 V) AC600 V, 60 s Net weight Approx. 0.10 g Temperature 〈Reflow profile for soldering heat evaluation〉 (℃) 250 Peak : 250 0 ℃ 200 Pre Heating Zone 100 50 +5 Over 230 ℃ 180 ℃ 150 ℃ 5 N {0.51 kgf} 10 s { }：Reference only − 65 ~ 150 °C Dielectric strength 150 Pull-off strength 90±30 s 30±10 s Heating time Soldering Zone  Reflow : two times maximum ■ ENVIRONMENTAL CHARACTERISTICS Test item Test conditions Specifications Thermal shock − 65 ~ 150 °C (0.5 h), 5 cycles [ Δ R/R ≦ 2 %] [S.S. ≦ 2 %] Humidity Shock − 10 ~ 65 °C (80 ~ 98 %), 10 cycles, 240 h 981 m/s2, 6 ms 6 directions for 3 times each Vibration (Amplitude) 1.52 mm or (Acceleration) 196 m/s2, 10 ~ 2000 Hz, 3 directions, 12 times each Load life 70 °C, 0.125 W, 1000 h Low temp. operation − 65 °C, 2 h High temp. exposure 150 °C, 250 h Immersion seal 85 °C, 60 s Reflow : Peak temperature 255 °C Soldering heat (Please refer to the profile below.) Manual soldering：350 ± 10 °C, 3 ~ 4 s [ Δ R/R ≦ 3 %] [ Δ R/R ≦ 1 %] [S.S. ≦ 1 %] [ Δ R/R ≦ 3 %] [S.S. ≦ 2 %] [ Δ R/R ≦ 2 %] [S.S. ≦ 2 %] [ Δ R/R ≦ 3 %] [S.S. ≦ 2 %] No leaks (No continuous bubbles) [ Δ R/R ≦ 1 %] Δ R/R：Change in total resistance S.S. ：Setting stability SM-3/31 SURFACE MOUNT TRIMMERS ■ MAXIMUM INPUT RATINGS Nominal resistance values (Ω) 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 1 k 2 k 5 k 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 1 M 2 M 104 204 504 105 205 112 158 200 200 200 1.12 0.79 0.40 0.20 0.10 ■ RECOMMENDED P.C.B. PAD OUTLINE DIMENSIONS ● SM-3W/31W ● SM-3A/31A ● SM-3B/31B (Unit : mm) 1.3 1.3 1.3 4 0 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 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 ③ 1 2.3 3.2 3.5 3.9 0.6 2.8 ② 3.9 4.2 0.4W × 1.3L × 0.3D 0.8 Note the terminal position. SM-3/31 SURFACE MOUNT TRIMMERS ■ OUTLINE DIMENSIONS Unless otherwise specified, tolerance : ± 0.3 (Unit : mm) ● SM-3A/31A Side adjustment ● SM-3B/31B Side adjustment ① ③ CW rotation Resistance code & Production date code ② Resistance code & Production date code 2.5 2.5 Note the terminal position. 0.4W × 1.3L × 0.3D 0.4W × 1.3L × 0.3D 3.9 ③ 3.9 1 2.8 5.3 3 – 0.8 2 – 0.6 ① 3.4 ② 3.9 3.4 3 – 0.8 ② 3.9 4.4 1 ③ 2 – 0.6 2.8 ① ■ 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. Maximum number of consecutive missing pieces = 2 Leader length and reel dimension are shown in the dia-grams below. ● EMBOSSED TAPE DIMENSIONS ● REEL DIMENSIONS （Conforms to JIS C 0806-3） （In accordance with EIAJ ET-7200A） Empty Filled (Unit: mm) Empty 13 Head 21±0.8 2±0.5 20 pitches min. 60 40 mm min. Leader Direction of feed +1 0 End +1 0 400 mm min. 13±0.2 0 180 –1.5 15.4±1 SM-3/31 SURFACE MOUNT TRIMMERS ● SM-3TW/31TW 4±0.1 Φ ③ A .1 +0 0 5 1. 1.75±0.1 2±0.05 0.4±0.1 A ② 8±0.1 +0.3 12 –0.1 5.5±0.05 Installation example (SM-3W) ① Cross section A-A 4.7 Installation example (SM-3A) 5.5±0.05 ① 0.4±0.1 +0.3 ③ 12 –0.1 .1 +0 0 5 1. Φ 4±0.1 2±0.05 A 1.75±0.1 ● SM-3TA/31TA A ② 3.9 8±0.1 Cross section A-A .1 +0 0 5 1. Φ 4±0.1 2±0.05 A ③ 1.75±0.1 ● SM-3TB/31TB 0.4±0.1 Installation example (SM-3B) A ② 8±0.1 ● 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. +0.3 12 –0.1 5.5±0.05 ① 3.9 Cross section A-A