SM-42/43 SURFACE MOUNT CERMET TRIMMERS S M - 4 T W Ω ( ) FEATURES PART NUMBER DESIGNATION. RoHS compliant

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1 SURFCE MOUNT CERMET TRIMMERS RoHS compliant INTERNL STRUCTURE FETURES RoHS compliant Fine adjustment is available utomatic mounting is available (Taping) Reflow soldering is available Sealed construction (Washable: Refer to -8) Part name Material Flammability Housing Polyphenylenesulphide UL-9V- Base element Ceramic Electrode g-pd cermet Resistive element RuO cermet dhesive Epoxy UL-9V- Wiper Multi metal alloy Terminal pin Copper alloy, Sn-Cu-plated Rotor gear Polyamide UL-9V- Shaft Brass, Nickel-plated PRT NUMBER DESIGNTION S M - T W Ω ( ) Series name Electrical turn turns turns Form of packaging TTaping (Reel) BlankBulk in plastic bag Resistance code Resistance value Product shape (Shape of terminal) W, XTop adjustmet, BSide adjustmet Please refer to the LIST OF PRT NUMBERS when placing orders. Specifications are subject to change without notice.

2 LIST OF PRT NUMBERS Electrical turn djustment position Top adjustment Side adjustment Shape of terminal W (J-hook) X (Gull wing) (J-hook) B (Gull wing) Form of packaging Taping (reel) SM-TW SM-TX SM-T SM-TB Plastic bag SM-W SM-X SM- SM-B Nominal resistance values Ω Ω Ω Ω Ω Ω kω kω kω kω kω kω kω kω kω MΩ MΩ Fig. The products indicated by mark are manufactured upon receipt of order basis. The above part numbers are all available with the respective combination of <Nominal resistance values> (Fig. ). Verify the above part numbers when placing orders. Taping specification is not sold separately and must be purchased in reel units. Top adjustment Side adjustment Pieces in package W (J-hook) X (Gull wing) (J-hook) B (Gull wing) SM-TW SM-TX SM-T SM-TB T, TB : pcs./reel TW, TX : pcs./reel SM-W SM-X SM- SM-B pcs./pack MECHNICL CHRCTERISTICS Operating torque 7. mn m {8 gf cm} maximum Mechanical stop Clutch action ELECTRICL CHRCTERISTICS Nominal resistance range Resistance tolerance Power ratings Resistance law Maximum input voltage Maximum wiper current Effective electrical turn End resistance C.R.V. Operating temp. range Temp. coefficient Insulation resistance Dielectric strength Net weight Reflow profile for soldering heat evaluation Temperature ( C) 8 C C + Peak : C Over C Pre Heating Zone 9 ± s Heating time ± s Ω ~ MΩ ± %. W (8 C) W ( C) Linear law DC V or power rating, whichever is smaller m or power rating, whichever is smaller turns (SM-), turns (SM-) % or Ω, whichever is greater % or Ω, whichever is greater ~ C ± - / C maximum MΩ minimum (DC V) C V, s pprox..7 g Soldering Zone Rotational life Thrust to shaft Solderability Shear (dhesion) Substrate bending Pull-off strength cycles [R/R ± ( Ω+ %)] N {. kgf} minimum ± C, ~ s N {. kgf} s Width 9 mm, bend mm, s, time N {. kgf} s { }Reference only ENVIRONMENTL CHRCTERISTICS Test item Test conditions Specifications Thermal shock Humidity Shock Vibration Load life Low temp. operation High temp. exposure Immersion seal ~ C (. h), cycles ~ C (8 ~ 98 %), cycles, h 98 m/s, ms directions for times each mplitude. mm or cceleration 9 m/s, ~ Hz, directions, times each [R/R %] [S.S. %] [R/R %] [R/R %] [S.S. %] 8 C,. W, h [R/R % or Ω] [S.S. %] C, h [R/R %] [S.S. %] C, h [R/R %] [S.S. %] 8 C, s No leaks (No continuous bubbles) Reflow : Peak temperature C Soldering heat (Please refer to the profile below.) Manual soldering [R/R %] ± C, ~ s R/RChange in total resistance S.S. Setting stability Reflow : two times maximum

3 MXIMUM INPUT RTINGS Nominal resistance values (Ω) Resistance code Maximum input voltage (V) Maximum wiper current (m) k.8.8 k.. k. 7.7 k.. k 7.7. k. k 8.8 k. k. M. M. The products indicated by mark are manufactured upon receipt of order basis. RECOMMENDED P.C.B. PD OUTLINE DIMENSIONS (Unit: mm) B W X Note) The zero point is the center of mounting.

4 OUTLINE DIMENSIONS Unless otherwise specified, tolerance : ±. (Unit : mm) W.9. CW rotation. Note the terminal position φ., Slot.W.D...9 X φ., Slot.W.D.. Resistance code & Produ ction d ate code φ., Slot.W.D. B φ., Slot.W.D.

5 PCKGING SPECIFICTIONS <Taping packaging specifications> Taping version (T, TB) is packaged in pcs. per reel. Orders will be accepted for units of pcs., i.e.,,, pcs., etc. TW, TX is packaged in pcs. per reel. Orders will be accepted for units of pcs., i.e.,, 7 pcs., etc. Maximum number of consecutive missing pieces = Leader length and reel dimension are shown in the dia-grams below. EMBOSSED TPE DIMENSIONS Empty Filled Empty REEL DIMENSIONS Conforms to JIS C 8- T/TB type : In accordance with EIJ ET-7 (Unit: mm) End Head + (T/TB) 7±. (TW, TX) mm min. pitches min. Direction of feed Leader mm min. ±.8 ±. + ±. 8. (T/TB).± (T/TB) 8 (TW, TX) 9.± (TW/TX) TW/TX T/TB +. φ. ±. ±..7 ±. 7. ± ±. Installation example (SM-W) φ. +. ±. ±.. ±..7 ±.. ±. Installation example (SM-) ±..7 Cross section - 8 ±.. Cross section - <Bulk pack specifications> Unit of bulk in a plastic bag is pcs. per pack. Boxing of bulk in a plastic bag is performed with pcs. per box.