SM-42/43 SURFACE MOUNT CERMET TRIMMERS INTERNAL STRUCTURE RoHS compliant 9 1 2 8 3 4 5 7 6 Part name Material Flammability FEATURES 1 Housing PPS(Polyphenylenesulphide) UL94-V-0 RoHS compliant 2 Base element Ceramic Fine adjustment is available Automatic mounting is available (Taping) 3 Electrode Ag-Pd cermet Reflow soldering is available Sealed construction (Washable: Refer to A-328) 2 4 Resistive element RuO cermet UL94-HB equivalent Adhesive Epoxy 5 Multi metal alloy 6 Wiper 7 Terminal pin Copper alloy, Sn-Cu-plated 8 Rotor gear Polyamide UL94-V-0 9 Shaft Brass, Nickel-plated PART NUMBER DESIGNATION S M - 4 T W 1 0 0 ( 1 0 1 ) Series name Resistance code Electrical turn Resistance value 2 11 turns 3 5 turns Form of packaging Product shape (Shape of terminal) T Taping (Reel) W, X Top adjustmet Blank Bulk in plastic bag A, B Side adjustmet Please refer to the LIST OF PART NUMBERS when placing orders. Specifications are subject to change without notice.COPAL ELECTRONICS SM-42/43 SURFACE MOUNT TRIMMERS LIST OF PART NUMBERS Nominal resistance values Form of packaging A 10 A 20 50 100 200 500 1 k 2 k 5 k Adjustment Electrical turn Shape of terminal position Taping (reel) Plastic bag 10 k 20 k 50 k 100 k 200 k 500 k 1 M 2 M Fig. 1 W (J-hook) SM-42TW SM-42W The products indicated by A mark are manufactured upon receipt of order basis. Top adjustment The above part numbers are all available with the respective combination of X (Gull wing) SM-42TX SM-42X <Nominal resistance values> (Fig. 1). 11 Verify the above part numbers when placing orders. A (J-hook) SM-42TA SM-42A Taping specification is not sold separately and must be purchased in reel units. Side adjustment B (Gull wing) SM-42TB SM-42B W (J-hook) SM-43TW SM-43W Top adjustment X (Gull wing) SM-43TX SM-43X 5 A (J-hook) SM-43TA SM-43A MECHANICAL CHARACTERISTICS Side adjustment B (Gull wing) SM-43TB SM-43B 17.6 mNm 180 gfcm maximum Operating torque TA, TB : 500 pcs./reel Pieces in package 50 pcs./pack Clutch action Mechanical stop TW, TX : 250 pcs./reel Rotational life 200 cycles R/R (3 +3 %) ELECTRICAL CHARACTERISTICS Thrust to shaft 5 N 0.51 kgf minimum Solderability 245 3 C, 2 ~ 3 s 10 ~ 2 M Nominal resistance range Shear (Adhesion) 5 N 0.51 kgf 10 s 10 % Resistance tolerance Substrate bending Width 90 mm, bend 3 mm, 5 s, 1 time 0.25 W (85 C) 0 W (150 C) Power ratings Pull-off strength 5 N 0.51 kgf 10 s Resistance law Linear law Reference only Maximum input voltage DC300 V or power rating, whichever is smaller ENVIRONMENTAL CHARACTERISTICS Maximum wiper current 100 mA or power rating, whichever is smaller 11 turns (SM-42), 5 turns (SM-43) Effective electrical turn Test item Test conditions Specifications R/R 2 % 1 % or 2 , whichever is greater End resistance 65 ~ 150 C (0.5 h), 5 cycles Thermal shock S.S. 1 % 1 % or 3 , whichever is greater 10 ~ 65 C (80 ~ 98 %), C.R.V. R/R 2 % Humidity 10 cycles, 240 h 2 65 ~ 150 C 981 m/s , 6 ms Operating temp. range Shock 6 directions for 3 times each R/R 1 % -6 100 10 /C maximum Temp. coefficient Amplitude 1.52 mm or S.S. 1 % 2 Vibration Acceleration 196 m/s , 100 M minimum (DC500 V) 10 ~ 2000 Hz, 3 directions, 12 times each Insulation resistance R/R 3 % or 3 85 C, 0.25 W, 1000 h Load life AC600 V, 60 s Dielectric strength S.S. 2 % R/R 1 % 65 C, 2 h Low temp. operation Approx. 0.17 g Net weight S.S. 1 % R/R 2 % 150 C, 250 h High temp. exposure S.S. 1 % Reflow profile for soldering heat evaluation 85 C, 60 s Immersion seal No leaks (No continuous bubbles) (C) +5 Peak : 250 0 C 250 Over 230 C Reflow : Peak temperature 255 C (Please refer to the profile below.) 200 Pre Heating Zone Soldering heat R/R 1 % 180 C Manual soldering 150 150 C 350 10 C, 3 ~ 4 s 90 30 s 100 30 10 s R/R Change in total resistance 50 Soldering Zone S.S. Setting stability Heating time Reflow : two times maximum Specifications are subject to change without notice. Specifications in this catalog are for reference. The formal specification sheets will be submitted upon request. Temperature