ST-4 SURFACE MOUNT CERMET TRIMMERS (SINGLE TURN) RoHS compliant ST-4 INTERNAL STRUCTURE 1 7 2 6 5 3 4 9 Part name FEATURES RoHS compliant Wide variety (7 types) to choose from Automatic mounting is possible (Taping) Flow/reflow soldering is possible Sealed construction (Washable: Refer to page 698.) Stopper structure prevents terminal pin from being open. Cross slot rotor suitable for automatic adjustment 8 Material 1 Wiper Multi metal alloy 2 Cover Stainless steel (SUS 304) 3 Housing 4 Terminal pin 5 Base element 6 "O" ring 7 Rotor 8 Electrode Ag-Pd cermet 9 Resistive element RuO2 cermet Epoxy Flammability -- UL94V-0 Copper alloy, Sn-Cu-plated -- Ceramic Silicone rubber UL94HB Polyphenylenesulphide UL94V-0 -- PART NUMBER DESIGNATION S T - 4 E T A 2 0 0 ( 2 0 1 ) Series name (minus slot) Resistance code Terminal pin Resistance value ESn-Cu (Lead-free) Product shape (Shape of terminal) Form of packaging TTaping (Reel) BlankBulk in plastic bag A, GJ-hook B, D, HGull wing C, FThrough hole pins S T - 4 2 E T A 2 0 0 ( 2 0 1 ) Series name (cross slot) Resistance code Terminal pin Resistance value ESn-Cu (Lead-free) Product shape (Shape of terminal) Form of packaging TTaping (Reel) BlankBulk in plastic bag Please refer to the LIST OF PART NUMBERS when placing orders. A, GJ-hook B, D, HGull wing C, FThrough hole pins ST-4 SURFACE MOUNT TRIMMERS LIST OF PART NUMBERS Form of packaging Adjustment Shape of terminal position A ( J-hook ) Nominal resistance values Taping (reel) Plastic bag ST-4/42ETA ST-4/42EA Top B ( Gull wing ) ST-4/42ETB adjustment C ( Through hole pins ) D ( Gull wing ) Rear adjustment F ( Through hole pins ) G ( J-hook ) Side adjustment H ( Gull wing Pieces in package A ST-4/42ETD ST-4/42EB ST-4/42EC A ST-4/42ED ST-4/42ETG ST-4/42EG ST-4/42EH 500 pcs./reel Fig. 1 Not manufactured 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. Cross slot available : ST-42E 100 pcs./pack The products indicated by A mark are manufactured upon receipt of order basis. C slot : ST-4E , B slot : ST-42E MECHANICAL CHARACTERISTICS Mechanical angle 240 (1 turn) Operating torque 10 mN*m {102 gf*cm} maximum Stop strength 30 mN*m {306 gf*cm} minimum 10 ~ 2 M Rotational life 100 cycles [ R/R (2 +3 %)] 20 % Thrust to rotor 5 N {0.51 kgf} minimum ELECTRICAL CHARACTERISTICS Nominal resistance range 10 k 20 k 50 k 100 k 200 k 500 k 1 M 2 M A ST-4/42EF ) ST-4/42ETH A10 A20 50 100 200 500 1 k 2 k 5 k Resistance tolerance Solderability 245 3 C, 2 ~ 3 s 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 0.25 W (70 C) 0 W (125 C) Power ratings Resistance law Effective electrical angle 1 % or 2 , whichever is greater C.R.V. 1 % or 3 , whichever is greater - 55 ~ 125 C Operating temp. range Insulation resistance 10 ~ 50 : 250 10-6/C maximum 100 ~ 2 M : 100 10-6/C maximum 1000 M minimum (DC500 V) Approx. 0.12 g (ST-4EA, EB, EC, ED, EF) Approx. 0.22 g (ST-4EG, EH) Reflow profile for soldering heat evaluation Temperature () 250 200 150 100 50 Peak : 250 +5 0 Over 230 180 150 ENVIRONMENTAL CHARACTERISTICS Test item Test conditions Specifications Thermal shock - 65 ~ 125 C (0.5 h), 5 cycles [ R/R 2 %] [S.S. 1 %] Humidity [ R/R 2 %] Shock AC500 V, 60 s Dielectric strength Net weight { }Reference only 210 (1 turn) End resistance Temp. coefficient 5 N {0.51 kgf} 10 s - 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, 0.25 W 1000 h Low temp. operation - 55 C, 2 h High temp. exposure 125 C, 250 h Immersion seal 85 C, 60 s Soldering heat Flow : 260 3 C as the temperature in a pot of molten solder, immersion from head of term inal to backside of board, 5 ~ 6 s, two times maximum Reflow : Peak temperature 255 C (Please refer to the profile below.) Manual soldering350 10 C, 3 ~ 4 s [ R/R 1 %] [S.S. 1 %] [ R/R 3 %] [S.S. 1 %] [ R/R 2 %] [S.S. 2 %] [ R/R 3 %] [S.S. 2 %] No leaks (No continuous bubbles) Pre Heating Zone 90 30 s 30 10 s Heating time Soldering Zone Reflow : two times maximum [ R/R 1 %] R/RChange in total resistance S.S. Setting stability ST-4 SURFACE MOUNT TRIMMERS MAXIMUM INPUT RATINGS Nominal resistance values ( ) Resistance code Maximum input voltage (V) Maximum wiper current (mA) A 10 A 20 50 100 200 500 1001.00100 2002.00100 500 3.53 70.7 101 5.00 50.0 201 7.07 35.4 501 11.2 22.4 1 k 2 k 5 k 10 k 20 k 50 k 102 202 502 103 203 503 15.8 22.4 35.4 50.0 70.7 112 15.8 11.2 7.07 5.00 3.54 2.24 100 k 200 k 500 k 1 M 2 M 104 204 504 105 205 158 200 200 200 200 1.58 1.00 0.40 0.20 0.10 The products indicated by A mark are manufactured upon receipt of order basis. RECOMMENDED P.C.B. PAD OUTLINE DIMENSIONS ST-4EA ST-4EB 2 1.5 2 2 2 2 (Unit: mm) ST-4ED 5.6 0 4 2 0 1.6 1.6 1.6 2.35 1.6 2.35 2.35 ST-4EG ST-4EH 2 2.8 0.8 2 0.8 2 0 2.35 3.3 2.5 1.6 0.3 0 0.3 1.6 1.6 1.6 1.5 2 2 0 1.6 1.6 2.35 Note) The zero point is the center of mounting. ST-4 SURFACE MOUNT TRIMMERS ST-4A OUTLINE DIMENSIONS Unless otherwise specified, tolerance : 0.3 (Unit: mm) 1 ST-4EA Top adjustment 2 Note the terminal position. 0.6 W x 2.3 L x 0.5 D 2 Resistance code & Production date code 1.2 Lead-free Identification mark 3 5.2 - 00.5 4.5 4B t = 0.15 3 3 CW rotation 1 5 2 - 0.8 2.35 2.3 0.35 min. ST-4EB Top adjustment 0.6 W x 2.3 L x 0.5 D 4.5 Lead-free Identification mark 3 5 1 t = 0.15 2.3 ST-4EC Top adjustment 2 - 0.8 2.35 0.6 W x 2.3 L x 0.5 D 2 3 - 0.6 5 4.5 Resistance code & Production date code Lead-free Identification mark G 3 0.35 min. T-4C 1.2 6.2 Resistance code & Production date code 2 5 1 2.3 2.54 41 t = 0.15 ST-4EG Side adjustment 5 Resistance code & Production date code 4.5 3 1.45 0.6 W x 2.3 L x 0.5 D 2 - 0.8 2.35 (2.1) Lead-free Identification mark t = 0.15 0.95 0 5.7 + 0.4 3.1 1 2 1.2 ST-4 SURFACE MOUNT TRIMMERS ST-4H OUTLINE DIMENSIONS Unless otherwise specified, tolerance : 0.3 (Unit: mm) 1 ST-4EH Side adjustment 2 Note the terminal position. 0.6 W x 2.3 L x 0.5 D 5 ST-4D Resistance code & Production date code 2 - 0.8 4.5 2.35 1 0 5.7+ 0.4 3.1 3 Lead-free Identification mark 2 0.8 6.1 ST-4ED Rear adjustment 1.2 t = 0.15 Semi-standard products 0.6 W x 2.3 L x 0.5 D 1.2 Resistance code & Production date code 2 4.5 0.5 F 3 CW rotation 0.5 7.2 Lead-free Identification mark 3 5 1 2 - 0.8 2.3 2.8 ST-4EF Rear adjustment t = 0.15 Semi-standard products 0.6 W x 2.3 L x 0.5 D 2 3 - 0.6 6.35 Resistance code & Production date code 4.5 3 2.35 Lead-free Identification mark 5 1 2.50.5 ST-42E B CROSS SLOT DIMENSION 0.6 W x 2.3 L x 0.5 D Cross slot screwdriver 0 bit : 0.8 D 2.3 t = 0.15 2.54 ST-4 SURFACE MOUNT TRIMMERS PACKAGING SPECIFICATIONS <Taping packaging specifications> Maximum number of consecutive missing pieces = 2 Leader length and reel dimension are shown in the diagrams below. 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. 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 Empty Filled (Unit: mm) Empty +1 0 Head 40 mm min. 210.8 20 pitches min. 60 0 (TA/TB) 50 min.(TG/TH) End 13 (ETA/ETB) 13.41 (ETG/ETH) 20.5 Direction of feed +1 Leader 400 mm min. 130.2 15.41 (ETA/ETB/ETD) 17.41 (ETG/ETH) 0 180 -1.5 (ST-4ETA/ETB/ETD) 254 2 (ST-4ETG/ETH) ST-4ETA/ETB/ETD ST-4ETG/ETH 4 0.1 1.5 0.3 0.1 4 0.1 0 0 .1 12 5.5 0.1 Installation example (ST-4EA) 5.5 0.05 2 0.1 1.5 + 0.3 0.1 12 2 0.05 8 0.1 1.75 0.1 8 0.1 1.75 0.1 +0.1 0 1.5 Lead-free Identification mark Direction of feed 2.7 (ST-4ETA/ETB) 3.4 (ST-4ETD) <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. Direction of feed 6.4 Installation example (ST-4EG)