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: 100ohm½4M7ohm
B/C: 1KΩ½470KΩ
±10%;±20%
15ohms
WS19-1
…………….
Resistance tolerance …………………
Absolute Minimum Resistance……………
(for total resistance value of 100 to 820 ohms inclusive)
…………………
≤15%
(for total resistance value of 1K to 4700K ohms inclusive)
…………………….. 5%
Contact Resistance Variation ……..………………≤5%
Insulation resistance (100VDC) ……
Power Rating
70℃.…………………………………………...
……………
A: 1Watt
1000Mohm (min)
WS19-2
B/C: 0.5Watt
.0Watt
A:350V
250V
WS19-3
125℃.………………………………………….…
Limit voltage………………………………… .…
…………
B、C:
Withstand Voltage………………….………
1300Vdc
Environmental Characteristics
Temperature Range………………
- 55℃ to +125℃
15G
100G
WS19-4
Vibration-……………………………………….…
Shock…………………………………….…….…
Load Life at 70℃…………………….……
………
Rotational Life
Standard---Bushing Type………………….
Locking ----Bushing Type……………………
25000cycles
500cycles
WS19-1A
1000 hours
△
R/R≤±10%
Mechanical Characteristics
Total mechanical travel
Starting torque
………………………
≥290°
………………………….
4½25mN·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…………………………
Switch insulation Voltage…………………
Switch capacity……………………………
750Vdc
500V
250V 1A
WS19-K1
240 hours,
△
R/R≤±10%
Operating Noise……………………………
≤68mV
Environmental Characteristics
Load Life at 70℃…………………...,1W
……………………
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
Standard
bushing
2
Lock
Bushing
3
Standard
bushing
elements.
&
dual
resistive
4
Lock bushing
&
dual
1A
Standard
bushing
with 6mm
diameter
(Others: 8mm)
③
Power Rating
1W-----linear taper;
④
⑤
⑥
⑦
⑧
0.5W-----log taper & anti-log taper
Power rating of resistor body far away from bushing will be cut half for WS19-3/4.
Standard Resistance
----- standard resistance table is available in WS series datasheet
16/20/25/40/50/60mm are available.
Custom lengths upon request.
5-----Flatted shaft;
1------Knurled
C-----Anti-Log Taper;
1F
Standard
bushing
&
K1/K2
Switch
style
(difference
dimension
for K1 & K2)
resistive
waterproofing
Length of Operating shaft (from mounting surface)
Shaft Style:
Taper
A-----Linear Taper;
B-----Log Taper;
Resistance Tolerance
3-----Slotted shaft;
K= 10%; M= 20%
Tel: (949)642-7324
SECI Engineers & Buyers' Guide
Fax: (949)642-7327
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