Sharma Potentiometers WS19 Carbon Composition Potentiometer Feature Hot Molded / Industrial / Sealed Locking-Bushing/ Standard-Bushing Meet MIL-R-94 Electrical Characteristics Standard Resistance Range ………… A: 100ohm～4M7ohm ……………. B/C: 1KΩ～470KΩ Resistance tolerance ………………… ±10%;±20% Absolute Minimum Resistance…………… WS19-1 15ohms (for total resistance value of 100 to 820 ohms inclusive) ………………… ≤15% (for total resistance value of 1K to 4700K ohms inclusive) …………………….. 5% WS19-2 Contact Resistance Variation ……..………………≤5% Insulation resistance (100VDC) …… 1000Mohm (min) Power Rating 70℃.…………………………………………... …………… A: 1Watt B/C: 0.5Watt 125℃.………………………………………….… .0Watt Limit voltage………………………………… .… A:350V ………… B、C: Withstand Voltage………………….……… WS19-3 250V 1300Vdc Environmental Characteristics Temperature Range……………… - 55℃ to +125℃ Vibration-……………………………………….… Shock…………………………………….…….… Load Life at 70℃…………………….…… ……… 15G WS19-4 100G 1000 hours △R/R≤±10% Rotational Life Standard---Bushing Type…………………. 25000cycles Locking ----Bushing Type…………………… WS19-1A 500cycles Mechanical Characteristics Total mechanical travel Starting torque ……………………… …………………………. ≥290° 4～25mN·m WS19-1F Continued on the following page Tel: (949)642-7324 SECI Engineers & Buyers' Guide Fax: (949)642-7327 Sharma Potentiometers WS19 - K1/K2 Carbon Composition Potentiometer Feature Hot-Molded / Industrial / Sealed / Switch Locking-Bushing / Standard-Bushing Meet MIL-R-94 Electrical Characteristics Withstand Voltage………………………… 750Vdc Switch insulation Voltage………………… 500V Switch capacity…………………………… 250V 1A Operating Noise…………………………… ≤68mV WS19-K1 Environmental Characteristics Load Life at 70℃…………………...,1W 240 hours, △R/R≤±10% …………………… Rotational Life………………………….. 10000cycles Mechanical Characteristics Total mechanical travel ……….…………… 270° WS19-K2 Note: Above characteristics is exclusive for WS19-K1/K2, other characteristics is the same as WS19 series. How to Order WS19— 1 —1W—4K7— 16— 3 — A— K ① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ① Model-----WS19 Carbon composition Potentiometer ② Bushing Style 1 2 3 Standard Lock Standard bushing Bushing bushing 4 & dual resistive elements. ③ 1A 1F K1/K2 Switch style Lock bushing Standard Standard & bushing bushing & (difference resistive with 6mm waterproofing dimension elements. diameter dual for K1 & K2) (Others: 8mm) Power Rating 1W-----linear taper; 0.5W-----log taper & anti-log taper Power rating of resistor body far away from bushing will be cut half for WS19-3/4. ④ Standard Resistance ⑤ Length of Operating shaft (from mounting surface) ⑥ Shaft Style: ⑦ Taper ⑧ A-----Linear Taper; B-----Log Taper; Resistance Tolerance ----- standard resistance table is available in WS series datasheet 3-----Slotted shaft; 16/20/25/40/50/60mm are available. Custom lengths upon request. 5-----Flatted shaft; 1------Knurled C-----Anti-Log Taper; K= 10%; M= 20% Tel: (949)642-7324 SECI Engineers & Buyers' Guide Fax: (949)642-7327