3 mm 1 SURFACE MOUNT CERMET TRIMMERS (SINGLE TURN) ST-32 INTERNAL STRUCTURE RoHS RoHS compliant 1 7 2 6 5 3 4 8 9 Flammability Part name Material FEATURES 1 Wiper Multi metal alloy RoHS L 2 E Cover Stainless steel (SUS 304) D UL94V-0 3 Housing Epoxy 4 Terminal pin Copper alloy, Sn-Cu-plated 754 5 Base element Ceramic O UL94HB 6 RoHS compliant O ring Silicone rubber Rotor with a cross slot for ease of adjustment PPS UL94V-0 7 Polyphenylenesulphide Rotor Leaded terminals provide strong as adhesive strength Ag-Pd against P.C.B. bending 8 Electrode Ag-Pd cermet J-hook, Gull wing and leaded terminal configurations RuO2 Sealed (Washable: Refer to page 754.) 9 Resistive element RuO2 cermet PART NUMBER DESIGNATION S T - 3 2 E T A 1 0 0 ( 1 2 ) Series name Resistance code Terminal pin Resistance value E Sn-Cu (Lead-free) Form of packaging Product shape (Shape of terminal) T Taping (Reel) A, GJ- J-hook Bulk in plastic bag B, H Gull wing Blank Please refer to the LIST OF PART NUMBERS when placing orders. 659 ST-32 SURFACE MOUNT TRIMMERS LIST OF PART NUMBERS Nominal resistance values A 10 A 20 50 100 200 300 500 Form of packaging 1 k 2 k 3 k 5 k 10 k 20 k 30 k Adjustment Shape of 50 k 100 k 200 k 500 k 1 M 2 M position terminal Taping (reel) Plastic bag Fig.1 J- A ( ) ST-32ETA ST-32EA J-hook A Top The products indicated by A mark are manufactured upon receipt of order basis. B ( ) ST-32ETB ST-32EB adjustment Gull wing J- G ( ) ST-32ETG ST-32EG The part numbers on the left are all available with the respective com bi na tion of J-hook Side <Nominal resistance values> (Fig. 1). ST-32ETH ST-32EH adjustment H ( ) Verify the above part numbers when placing orders. Gull wing Taping specification is not sold separately and must be purchased in reel units. Pieces in package 500 pcs./reel 100 pcs./pack Fig. 1 MECHANICAL CHARACTERISTICS 250 (1 turn) Mechanical angle L E 5 mNm 51 gfcm maximum Operating torque D 20 mNm 204 gfcm minimum Stop strength ELECTRICAL CHARACTERISTICS 100 cycles R/R (2 +3 %) Rotational life 10 ~ 2 M Nominal resistance range 5 N 0.51 kgf minimum Thrust to rotor 20 % Resistance tolerance 245 3 C, 2 ~ 3 s Solderability 0.125 W (70 C) 0 W (125 C) Power ratings 5 N 0.51 kgf 10 s Shear (Adhesion) (B)Linear law (B) Resistance law 90 mm 3 mm5 s, 1 DC200 V Substrate bending Width 90 mm, bend 3 mm, 5 s, 1 time Maximum input voltage DC200 V or power rating, whichever is smaller 5 N 0.51 kgf 10 s 100 mA Pull-off strength Maximum wiper current 100 mA or power rating, whichever is smaller Reference only 210 (1 turn) Effective electrical angle 1 % 2 End resistance 1 % or 2 , whichever is greater ENVIRONMENTAL CHARACTERISTICS 1 % 3 C.R.V. 1 % or 3 , whichever is greater Test item Test conditions Specifications 55 ~ 125 C R/R 2 % Operating temp. range 65 ~ 125 C (0.5 h), 5 cycles Thermal shock S.S. 1 % -6 10 ~ 50 : 250 10 /C maximum -6 10 ~ 65 C ( 80 ~ 98 %), Temp. coefficient 100 ~ 2 M : 100 10 /C maximum R/R 2 % Humidity 10 cycles, 240 h 2 1000 M minimum (DC500 V) 981 m/s , 6 ms Insulation resistance Shock 6 directions for 3 times each R/R 1 % AC500 V, 60 s (Amplitude) 1.52 mm or Dielectric strength S.S. 1 % 2 (Acceleration) 196 m/s , Approx. 0.05 g (ST-32EA, EB) Vibration 10 ~ 2000 Hz, 3 directions, 12 times each Net weight Approx. 0.11 g (ST-32EG, EH) R/R 3 % 70 C, 0.125 W, 1000 h Load life S.S. 1 % R/R 2 % 55 C, 2 h Low temp. operation S.S. 2 % Reflow profile for soldering heat evaluation R/R 3 % 125 C, 250 h High temp. exposure S.S. 2 % (C) +5 Peak : 250 0 C 85 C, 60 s 250 No leaks (No continuous bubbles) Immersion seal Over 230 C 260 3 C 56 200 Pre Heating Zone 2 180 C 255 C 150 150 C Flow : 260 3 C as the temperature in a pot of R/R 1 % Soldering heat 90 30 s molten solder, immer sion from head of ter minal to backside of board, 5 ~ 6 s, two times maximum. 100 Reflow : Peak temperature 255 C 30 10 s (Please refer to the profile below.) Manual soldering350 10 C, 3 ~ 4 s 50 Soldering Zone Heating time R/RChange in total resistance S.S. Setting stability Reflow : two times maximum 660 Temperature