SURFACE MOUNT CERMET TRIMMERS (SINGLE TURN)ST-32 INTERNAL STRUCTURE RoHS compliant 1 7 2 6 5 3 4 8 9 Part name Material FEATURES Wiper Multi metal alloy 1 RoHS compliant Cover Stainless steel (SUS 304) 2 Rotor with a cross slot for ease of adjustment Leaded terminals provide strong as adhesive strength Housing Epoxy 3 against P.C.B. bending Terminal pin Copper alloy, Sn-Cu-plated J-hook, Gull wing and leaded terminal configurations 4 Sealed (Washable: Refer to page 698.) Base element Ceramic 5 Resin materials are UL Recognized 94V-0 or 94V-1 equivalent O ring Silicone rubber 6 PPS Rotor 7 Polyphenylenesulphide Electrode Ag-Pd cermet 8 Resistive element RuO2 cermet 9 PART NUMBER DESIGNATION S T - 3 2 E T A 1 0 0 ( 1 2 ) Series name Resistance code Terminal pin Resistance value ESn-Cu (Lead-free) Form of packaging Product shape (Shape of terminal) TTaping (Reel) AJ-hook(Top adjustment) BlankBulk in plastic bag BGull wing(Top adjustment) GJ-hook (Side adjustment) HGull wing(Side adjustment) Please refer to the LIST OF PART NUMBERS when placing orders.ST-32 SURFACE MOUNT TRIMMERS LIST OF PART NUMBERS Nominal resistance values A A 10 20 50 100 200 300 500 Form of packaging Adjustment Shape of 1 k 2 k 3 k 5 k 10 k 20 k 30 k position terminal 50 k 100 k 200 k 500 k 1 M 2 M Taping (reel) Plastic bag Fig.1 J-hook ST-32ETA ST-32EA A ( ) Top The products indicated by A mark are manufactured upon receipt of adjustment order basis. Gull wing B ( ) ST-32ETB ST-32EB J-hook G ( ) ST-32ETG ST-32EG The part numbers on the left are all available with the respective com bina t ion of Side <Nominal resistance values> (Fig. 1). adjustment H (Gull wing) ST-32ETH ST-32EH Verify the above part numbers when placing orders. Taping specification is not sold separately and must be purchased in reel units. Pieces in package 500 pcs./reel 100 pcs./pack MECHANICAL CHARACTERISTICS Mechanical angle 250 (1 turn) Operating torque 5 mNm 51 gfcm maximum Stop strength 20 mNm 204 gfcm minimum ELECTRICAL CHARACTERISTICS Rotational life 100 cycles R/R (2 +3 %) Nominal resistance range 10 ~ 2 M Thrust to rotor 5 N 0.51 kgf minimum Resistance tolerance 20 % Solderability 245 3 C, 2 ~ 3 s Power ratings 0.125 W (70 C) 0 W (125 C) Shear (Adhesion) 5 N 0.51 kgf 10 s Resistance law Linear law (B) Substrate bending Width 90 mm, bend 3 mm, 5 s, 1 time Maximum input voltage DC200 V or power rating, whichever is smaller Pull-off strength 5 N 0.51 kgf 10 s Maximum wiper current 100 mA or power rating, whichever is smaller Reference only Effective electrical angle 210 (1 turn) End resistance 1 % or 2 , whichever is greater ENVIRONMENTAL CHARACTERISTICS C.R.V. 1 % or 3 , whichever is greater Test item Test conditions Specifications Operating temp. range 55 ~ 125 C R/R 2 % Thermal shock 65 ~ 125 C (0.5 h), 5 cycles -6 S.S. 1 % 10 ~ 50 : 250 10 /C maximum Temp. coefficient -6 10 ~ 65 C (80 ~ 98 %), 100 ~ 2 M : 100 10 /C maximum Humidity R/R 2 % 10 cycles, 240 h 2 Insulation resistance 1000 M minimum (DC500 V) 981 m/s , 6 ms Shock 6 directions for 3 times each R/R 1 % Dielectric strength AC500 V, 60 s (Amplitude) 1.52 mm or S.S. 1 % 2 (Acceleration) 196 m/s , Vibration Approx. 0.05 g (ST-32EA, EB) Net weight 10 ~ 2000 Hz, 3 directions, 12 times each Approx. 0.11 g (ST-32EG, EH) R/R 3 % Load life 70 C, 0.125 W, 1000 h S.S. 1 % R/R 2 % Low temp. operation 55 C, 2 h Reflow profile for soldering heat evaluation S.S. 2 % R/R 3 % High temp. exposure 125 C, 250 h S.S. 2 % (C) +5 Peak : 250 0 C Immersion seal 85 C, 60 s No leaks (No continuous bubbles) 250 Over 230 C 200 Pre Heating Zone Flow : 260 3 C as the temperature in a 180 C pot of molten solder, immersion fr om head of terminal t o backside of board, 5 ~ 6 s, 150 150 C Soldering heat two times maximum. R/R 1 % 90 30 s Reflow : Peak temperature 255 C (Please refer to the profile below.) 100 Manual soldering350 10 C, 3 ~ 4 s 30 10 s 50 Soldering Zone Heating time R/RChange in total resistance S.S. Setting stability Reflow : two times maximum Temperature