ST2TA503

ST-2 SURFACE MOUNT CERMET TRIMMERS (SINGLE TURN) RoHS compliant INTERNAL STRUCTURE 8 2 3 6 4 7 1 !1 9 5 !0 Part name ■ FEATURES ● ● ● ● RoHS compliant Compact and low-profile □2 mm single turn type Sealed constructio Resin materials are UL Recognized 94V-0 or 94V-1 equivalent Material ① Housing ② Rotor Polyphenylenesulphide ③ Wiper Stainless steel (SUS 304) ④ Terminal #2 ⑤ Terminal #1, #3 ⑥ Cover ⑦ substrate ⑧ Pin Blass, Sn-plated ⑨ “O” ring Silicone rubber ⑩ Terminations Ag-Pd cermet ⑪ Resistive element RuO2 cermet Epoxy Copper alloy, Sn-Cu-plated Stainless steel (SUS 304) Ceramic ■ PART NUMBER DESIGNATION S T - 2 T A 1 0 0Ω ( 1 0 1 ) Series name Resistance code Form of packaging Resistance value T：Taping (Reel) Blank：Bulk in plastic bag Product shape (Shape of terminal) A：J-hook (Top adjustment) ※ Please refer to the LIST OF PART NUMBERS when placing orders. ST-2 SURFACE MOUNT TRIMMERS ■ LIST OF PART NUMBERS Adjustment position Form of packaging Shape of terminal Top adjustment A ( J-hook Pieces in package 〈Nominal resistance values〉 ) Taping (reel) Plastic bag ST-2TA ST-2A 500 pcs./reel 100 pcs./pack Resistance tolerance 200 Ω 500 Ω 1 kΩ 2 kΩ 5 kΩ 20 kΩ 50 kΩ 100 kΩ 200 kΩ 500 kΩ 1 MΩ 10 kΩ Fig.1 ■ ELECTRICAL CHARACTERISTICS Nominal resistance range 100 Ω ※ The part numbers on the left are all available with the respective combination of (Fig. 1). ※ Verify the above part numbers when placing orders. ※ Taping version is not sold separately and must be purchased in reel units. ■ MECHANICAL CHARACTERISTICS 100 Ω ~ 1 MΩ Mechanical angle 270 ° (1 turn) ± 20 % Operating torque 5 mN·m {51 gf·cm} maximum Power ratings 0.1 W (70 °C) 0 W (125 °C) Stop strength 8 mN·m {78.4 gf·cm} minimum Resistance law Linear law Rotational life 50 cycles [ΔR/R ≦ ± (2 Ω + 5 %)] Maximum input voltage DC50 V or power rating, whichever is smaller Thrust to rotor 3 N {0.31 kgf} minimum Maximum wiper current I = P/R A （　　　　　　　） Effective electrical angle Solderability 245 ± 3 °C, 2 ~ 3 s 240 ° (1 turn) Shear (Adhesion) 5 N {0.51 kgf} 10 s End resistance 1 % or 2 Ω , whichever is greater Substrate bending Width 90 mm, bend 3 mm, 5 s, 1 time C.R.V. 2 % or 3 Ω , whichever is greater Pull-off strength Within power ratings Operating temp. range − 55 ~ 125 °C Temp. coefficient ± 150 10-6/°C Insulation resistance Dielectric strength Net weight 1000 MΩ minimum (DC500 V) AC500 V, 60 s Approx. 0.032 g 5 N {0.51 kgf} 10 s { }：Reference only ST-2 SURFACE MOUNT TRIMMERS ■ ENVIRONMENTAL CHARACTERISTICS Test item Thermal shock Humidity Shock Test conditions Specifications − 65 ~ 125 °C (0.5 h), 5 cycles − 10 ~ 65 °C (80 ~ 98 %), 10 cycles, 240 h 981 m/s2, 6 ms 6 directions for 3 times each [ Δ R/R ≦ 2 %] [S.S. ≦ 2 %] Vibration (Amplitude) 1.52 mm or (Acceleration) 196 m/s2, 10 ~ 2000 Hz, 3 directions, 12 times each Load life 70 °C, 0.1 W 1000 h Low temp. operation − 55 °C, 2 h High temp. exposure 125 °C, 250 h Immersion seal 85 °C, 60 s [ Δ R/R ≦ 2 %] [ Δ R/R ≦ 2 %] [S.S. ≦ 1 %] [ Δ R/R ≦ 3 %] [S.S. ≦ 1 %] [ Δ R/R ≦ 2 %] [S.S. ≦ 2 %] [ Δ R/R ≦ 3 %] [S.S. ≦ 2 %] No leaks (No continuous bubbles) Reflow Peak temperature : 255 °C (Please refer to the profile below) ■ MAXIMUM INPUT RATINGS Nominal resistance values ( Ω ) Maximum input voltage (V) Resistance code Maximum wiper current (mA) 100 200 500 101 201 501 3.16 4.47 7.07 31.6 22.4 14.1 1 k 2 k 5 k 10 k 20 k 50 k 102 202 502 103 203 503 10.0 14.1 22.3 31.6 44.7 50.0 10.0 7.1 4.5 3.2 2.2 1.0 100 k 200 k 500 k 1 M 104 204 504 105 50.0 50.0 50.0 50.0 0.5 0.25 0.1 0.05 [ Δ R/R ≦ ± 1 %] Soldering heat Flow soldering： 260 ± 3 °C, 5 ~ 6 s, two times maximum Manual soldering： 350 ± 10 °C, 3 ~ 4 s Δ R/R：Change in total resistance S.S. ：Setting stability 〈Reflow profile for soldering heat evaluation〉 ■ RECOMMENDED P.C.B. PAD OUTLINE DIMENSIONS (Unit : mm) Peak : 250 +5 0 1 °C 0.8 (°C) 250 100 50 150 °C 90 ± 30 s 0 1.8 150 180 °C Pre Heating Zone 30 ± 10 s Heating time Soldering Zone リフロー回数：２回 Reflow : two times maximum 0.65 0.6 0.65 0.8 Temperature Over 230 °C 200 Note) The zero point is the center of mounting. ST-2 SURFACE MOUNT TRIMMERS ■ OUTLINE DIMENSIONS Unless otherwise specified, tolerance : ± 0.3 (Unit : mm) ● ST-2A ① Top adjustment ③ CW rotation ② ※ Note the terminal position. 0.7 t = 0.1 2 – 0.35 Resistance code 2.4 ③ 1.7 0.45 2.8 (1.9) ② 0.45 0.35 W × 1.5 L × 0.3 D Production date code ① 1.25 ■ ST-2/ST-32 ADJUSTMENT TOOL ● Compliant with two models (ST-2/ST-32) Recommended models 130 φ 1.90 Material : Polyoxymethylene 1.20 For ST-32 ■ Recommended screwdrivers for use ※ Note Manufacturer Model ENGINEER INC. DA-54 : Please do not use the tool for purposes other than adjustment of electronic components. φ6 ST-2 φ 1.7 ST-32 Tip thickness 0.35 Tip 1.4 × 1.4 Tip thickness 0.4 Tip 1.7 × 1.1 For ST-2 ST-2 SURFACE MOUNT TRIMMERS ■ 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 pcs.). Maximum number of consecutive missing pieces=2 Leader length and reel dimension are shown in the diagrams below. ● EMBOSSED TAPE DIMENSIONS ● REEL DIMENSIONS （Conforms to JIS C 0806-3） Empty Filled （In accordance with EIAJ ET-7200A） Empty (Unit: mm) 13 Head φ 21±0.8 40 mm min. 2±0.5 20 pitches min. Leader 400 mm min. Direction of feed φ 13±0.2 0 φ 180 –1.5 1 5.5 ± 0.05 2 3 引き出し方向 Direction of feed ● Unit of bulk in a plastic bag is 100 pcs. per pack. ● Boxing of bulk in a plastic bag is performed with 500 pcs. per box. 0.3 ± 0.1 装着例 Installation example (ST-2A) 12 +0.1 0 .5 φ1 2 ± 0.05 1.75 ± 0.1 ● ST-2TA 4 ± 0.1 φ 60 +10 End +1 0 2.2 15.4±1