ST-4 構造図 ST-4 SURFACE MOUNT CERMET TRIMMERS (SINGLE TURN) RoHS compliant INTERNAL STRUCTURE 1 7 2 6 5 3 4 8 9 Part name Material Flammability 1 Wiper Multi metal alloy — ■ FEATURES 2 Cover Stainless steel (SUS 304) ● RoHS compliant 3 Housing Epoxy UL94V-0 ● Wide variety (7 types) to choose from ● Automatic mounting is possible (Taping) 4 Terminal pin Copper alloy, Sn-Cu-plated ● Flow/reflow soldering is possible — ● Sealed construction (Washable: Refer to page 698.) 5 Base element Ceramic ● Stopper structure prevents terminal pin from being open. ● Cross slot rotor suitable for automatic adjustment 6 “O” ring Silicone rubber UL94HB 7 Rotor Polyphenylenesulphide UL94V-0 8 Electrode Ag-Pd cermet — 9 Resistive element RuO2 cermet ■ PART NUMBER DESIGNATION S T - 4 E T A 2 0 0 Ω ( 2 0 1 ) Series name (minus slot) Resistance code Terminal pin Resistance value E：Sn-Cu (Lead-free) Product shape (Shape of terminal) Form of packaging A, G：J-hook T：Taping (Reel) B, D, H：Gull wing Blank：Bulk in plastic bag C, F：Through hole pins S T - 4 2 E T A 2 0 0 Ω ( 2 0 1 ) Series name (cross slot) Resistance code Terminal pin Resistance value E：Sn-Cu (Lead-free) Product shape (Shape of terminal) Form of packaging A, G：J-hook T：Taping (Reel) B, D, H：Gull wing Blank：Bulk in plastic bag C, F：Through hole pins ※Please refer to the LIST OF PART NUMBERS when placing orders.

ST-4 SURFACE MOUNT TRIMMERS ■ LIST OF PART NUMBERS 〈Nominal resistance values〉 Adjustment Form of packaging A10 Ω A20 Ω 50 Ω 100 Ω 200 Ω 500 Ω 1 kΩ 2 kΩ 5 kΩ Shape of terminal position Taping (reel) Plastic bag 10 kΩ 20 kΩ 50 kΩ 100 kΩ 200 kΩ 500 kΩ 1 MΩ 2 MΩ Fig. 1 A (J-hook) ST-4/42ETA ST-4/42EA 　：Not manufactured adjuTsotmp ent B ( Gull wing ) ST-4/42ETB ST-4/42EB ※T<hNeo ambionvael rpeasrits tnaunmceb evrasl uaeres >a l(l Faivga. i1la).ble with the respective combination of C (Through hole pins) ST-4/42EC ※Verify the above part numbers when placing orders. ※Taping specification is not sold separately and must be purchased in reel units. Rear D ( Gull wing ) A ST-4/42ETD A ST-4/42ED ※Cross slot available : ST-42E□ adjustment F (Through hole pins) A ST-4/42EF Side G (J-hook) ST-4/42ETG ST-4/42EG adjustment H ( Gull wing ) ST-4/42ETH ST-4/42EH Pieces in package 500 pcs./reel 100 pcs./pack The products indicated by A mark are manufactured upon receipt of order basis. ■ MECHANICAL CHARACTERISTICS ※C slot : ST-4E□, B slot : ST-42E□ Mechanical angle 240° (1 turn) Operating torque 10 mN·m {102 gf·cm} maximum ■ ELECTRICAL CHARACTERISTICS Stop strength 30 mN·m {306 gf·cm} minimum Nominal resistance range 10 Ω ~ 2 MΩ Rotational life 100 cycles [ΔR/R ≦ ± (2 Ω +3 %)] Resistance tolerance ± 20 % Thrust to rotor 5 N {0.51 kgf} minimum Power ratings 0.25 W (70 °C) 0 W (125 °C) Solderability 245 ± 3 °C, 2 ~ 3 s Resistance law Linear law (B) Shear (Adhesion) 5 N {0.51 kgf} 10 s Maximum input voltage DC200 V or power rating, whichever is smaller Substrate bending Width 90 mm, bend 3 mm, 5 s, 1 time Maximum wiper current 100 mA or power rating, whichever is smaller Pull-off strength 5 N {0.51 kgf} 10 s Effective electrical angle 210° (1 turn) { }：Reference only End resistance 1 % or 2 Ω, whichever is greater ■ ENVIRONMENTAL CHARACTERISTICS C.R.V. 1 % or 3 Ω, whichever is greater Test item Test conditions Specifications Operating temp. range −55 ~ 125 °C [ΔR/R ≦ 2 %] Temp. coefficient 1 0100 ΩΩ ~~ 25 0M ΩΩ : :± ± 2 15000 1 100-6-/6°/C°C m maaxximimuumm THhuemrmidiatyl shock−6−5 ~1 01 ~2 56 5° C°C ( 0(8.50 h~ )9, 85 %cy),cles [Δ[S.RS/.R ≦ ≦ 1 2% %] ] 10 cycles, 240 h Insulation resistance 1000 MΩ minimum (DC500 V) 981 m/s2, 6 ms Shock 6 directions for 3 times each Dielectric strength AC500 V, 60 s [ΔR/R ≦ 1 %] (Amplitude) 1.52 mm or [S.S. ≦ 1 %] Approx. 0.12 g (ST-4EA, EB, EC, ED, EF) Vibration (Acceleration) 196 m/s2, Net weight Approx. 0.22 g (ST-4EG, EH) 10 ~ 2000 Hz, 3 directions, 12 times each [ΔR/R ≦ 3 %] Load life 70 °C, 0.25 W 1000 h [S.S. ≦ 1 %] 〈Reflow profile for soldering heat evaluation〉 [ΔR/R ≦ 2 %] Low temp. operation −55 °C, 2 h [S.S. ≦ 2 %] (℃) High temp. exposure 125 °C, 250 h [ΔR/R ≦ 3 %] 250 Peak : 250+ 50℃ [S.SN.o ≦lea k2s %] Over 230 ℃ Immersion seal 85 °C, 60 s (No continuous bubbles) e 200 Pre Heating Zone ur 180 ℃ at Flow : 260 ± 3 °C as the temperature in a er 150 150 ℃ pot of molten solder, immers ion from head of p m 90 ± 30 s ter minal to backside of board, 5 ~ 6 s, two Te Soldering heat times maximum [ΔR/R ≦ 1 %] 100 Reflow : Peak temperature 255 °C 30 ± 10 s (Please refer to the profile below.) Manual soldering：350 ± 10 °C, 3 ~ 4 s 50 Soldering Zone Heating time Reflow : two times maximum ΔR/R：Change in total resistance S.S. ：Setting stability

ST-4 SURFACE MOUNT TRIMMERS ■ MAXIMUM INPUT RATINGS Nominal resistance values (Ω) Resistance code Maximum input voltage (V) Maximum wiper current (mA) A 10 100 1.00 100 A 20 200 2.00 100 50 500 3.53 70.7 100 101 5.00 50.0 200 201 7.07 35.4 500 501 11.2 22.4 1 k 102 15.8 15.8 2 k 202 22.4 11.2 5 k 502 35.4 7.07 10 k 103 50.0 5.00 20 k 203 70.7 3.54 50 k 503 112 2.24 100 k 104 158 1.58 200 k 204 200 1.00 500 k 504 200 0.40 The products indicated by A 1 M 105 200 0.20 mark are manufactured upon 2 M 205 200 0.10 receipt of order basis. ■ RECOMMENDED P.C.B. PAD OUTLINE DIMENSIONS (Unit: mm) ● ST-4EA ● ST-4EB ● ST-4ED 2 2 2 5 1. 2 2 0 0 0 6 2 4 5. 2 2 1.6 1.6 1.6 1.6 1.6 1.6 1.5 2.35 2.35 2.35 ● ST-4EG ● ST-4EH 2 2 8 8 8 0. 2 0. 2. 0 0 3 5 3 0. 2. 0. 3.3 1.6 1.6 Note) The zero point is the center of mounting. 1.6 1.6 2.35 2.35 ΔR/R：Change in total resistance S.S. ：Setting stability

ST-4 SURFACE MOUNT TRIMMERS ST-4A 外形図 ■ OUTLINE DIMENSIONS Unless otherwise specified, tolerance : ± 0.3 (Unit: mm) 1 3 ● ST-4EA CW rotation 2 Top adjustment ※Note the terminal position. 0.6 W × 2.3 L × 0.5 D 2 Resistance code & 1.2 Production date code 4.5 Lead-free Identification mark 05.2– 0.5 3 ST-4B 外形図 t = 0.15 2 – 0.8 3 5 1 2.3 2.35 ● ST-4EB Top adjustment 0.6 W × 2.3 L × 0.5 D min. Resistance code & 5 1.2 2 Production date code 0.3 ST-4C 外形図 4.5 Lead-free Identification mark 6.2 n. 2 – 0.8 3 5 1 t = 0.15 2.3 35 mi 2.35 ● ST-4EC 0. Top adjustment 0.6 W × 2.3 L × 0.5 D 2 Resistance code & 3 – 0.6 Production date code 5 4. 5 Lead-free Identification mark ST-4G 外形図 3 5 1 2.3 41 2.54 t = 0.15 ● ST-4EG Side adjustment 0.6 W × 2.3 L × 0.5 D 2.35 5 RPreosdisutcatniocen cdoadtee c&ode 4.5 452 – 0.8 3 1. 1 +0.45.70 1 Lead-free Identification mark (2.1) 2 3. 5 1.2 9 0. t = 0.15

ST-4 SURFACE MOUNT TRIMMERS ST-4H 外形図 ■ OUTLINE DIMENSIONS Unless otherwise specified, tolerance : ± 0.3 (Unit: mm) 1 3 ● ST-4EH CW rotation 2 Side adjustment ※Note the terminal position. 0.6 W × 2.3 L × 0.5 D Resistance code & 2.35 Production date code 5 4.5 2 – 0.8 ST-4D 外形図 1 3 +0.470 Lead-free Identification mark 5. 1 3. 2 0.8 1.2 6.1 t = 0.15 ● ST-4ED Rear adjustment ＜Semi-standard products＞ 0.6 W × 2.3 L × 0.5 D 1.2 Resistance code & 2 Production date code ST-4F 外形図 0.5 4.5 Lead-free Identification mark 7.2 5 0. 2 – 0.8 3 5 1 2.3 t = 0.15 2.35 2.8 ● ST-4EF Rear adjustment ＜Semi-standard products＞ 0.6 W × 2.3 L × 0.5 D 3 – 0.6 2 Resistance code & Production date code 5 5 4. Lead-free Identification mark 6.3 3 5 1 2.50.5 2.3 t = 0.15 2.54 ● ST-42E B CROSS SLOT DIMENSION 0.6 W × 2.3 L × 0.5 D Cross slot screwdriver 0 bit : 0.8 D

ST-4 SURFACE MOUNT TRIMMERS ■ PACKAGING SPECIFICATIONS <Taping packaging specifications> ● Taping version is packaged in 500 pcs. per reel. Maximum number of consecutive missing pieces = 2 Orders will be accepted for units of 500 pcs., i.e., 500, Leader length and reel dimension are shown in the dia- 1000, 1500 pcs., etc. grams below. ● ST-4ETA, ETB and ETD versions are boxed with 4 reels (2000 pcs.). ST-4ETG and ETH versions are boxed with one reel (500 pcs.). ● EMBOSSED TAPE DIMENSIONS ● REEL DIMENSIONS （Conforms to JIS C 0806-3） （In accordance with EIAJ ET-7200A） (Unit: mm) Empty Filled Empty 13+ 10 (ETA/ETB) 13.4±1(ETG/ETH) End Head 40 mm min. 20 pitches min. 21±0.8 2±0.5 A/TB)G/TH) Direction of feed 400L meamde mrin. +10(T 0min.(T 60 5 13±0.2 15.4±1 (ETA/ETB/ETD) 180 – 01 .5 (ST-4ETA/ETB/ETD) 17.4±1 (ETG/ETH) 254 ± 2 (ST-4ETG/ETH) ● ST-4ETA/ETB/ETD ● ST-4ETG/ETH φ1.5+00.1 1 8 ± 0.1 8 ± 0.1 0. 2 ± 0.05 4 ± 0.1 φ1.5 1.75 ± 0.3I n±s 0ta.1llation example φ1.50+0.12 ± 0.1 4 ± 0.1 1.75 ± 0.1 0.3 ± 0.1 I(nSsTt-a4llEaGtio)n example (ST-4EA) 5 0 5.5 ± 0. 12 5.5 ± 0.1 12 Lead-free Identification mark 2.7 (ST-4ETA/ETB) 6.4 Direction of feed 3.4 (ST-4ETD) Direction of feed <Bulk pack specifications> ● 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.