Sharma Potentiometers
WS Carbon Composition Potentiometer
Features
■
Hot-Molded / Industrial / Sealed
■
Locking-Bushing / Standard-Bushing
■
Meet MIL-R-94
Electrical Characteristics
Standard Resistance Range………..
A: 100 to 4M7 ohms
…………… B/C: 1K to 1M ohms
Resistance Tolerance………….………
±5%,±10%,±20%
Absolute Minimum Resistance…………………… 15 ohms
(for total resistance values of 100 to 820 ohms inclusive)
………………………………………………………… 1%
(for total resistance values of 1K to 4700K ohms inclusive)
Contact Resistance Variation……….…………………… 5%
Insulation Resistance (100 VDC)….1,000 M ohms minimum
Power Rating:
at 70℃
……………………………………
A: 0.5 watt
………………………………………. B/C: 0.25 watt
at 125℃ ……………………
0 watt
Environmental Characteristics
Temperature Range……….…………………-55℃ to +125℃
Vibration………………………………………………….. 15G
Shock……………………………………………………. 100G
Load Life: 1,000 hours, 70℃
………………………………A: 0.5 watt
………………………….
B/C: 0.25 watt
Total Resistance Shift…………………………….
±10%
Rotational Life
WS-1/1A (Standard-Bushing Type)……… 10,000 cycles
Total Resistance Shift………………………
±10%
WS-2/2A(Locking-Bushing Type)……………… 500 cycles
Total Resistance Shift……………………………
±10%
Mechanical Characteristics
Total Mechanical Angle……………………… 270º minimum
Torque
Starting Torque……………………………… 0.8 to 5 N•cm
Lock Torque(Locking-Bushing Type)…………… 8 N•cm
Weight………………………………… Approximately 8 gram
How To Order
WS— 1 —0.5 —4K7— 16— 3 — A—
M
①
①
②
③
④
⑤
⑥
⑦
⑧
②
Model
Bushing Style:
1-- Standard bushing; 2--Lock Bushing
Power Rating
0.5W--linear taper; 0.25W--log taper & anti-log taper
Standard Resistance: see standard resistance table
Length of Operating shaft (from mounting surface)
Shaft Style:
3--Slotted shaft;
5--Flatted shaft
③
④
⑤
⑥
⑦
⑧
Standard Resistance Table (ohms)
100
120
150
180
220
270
330
390
470
560
680
820
1K
1K2
1K5
1K8
2K2
2K7
3K3
3K9
4K7
5K6
6K5
8K2
10K
12K
15K
18K
22K
27K
33K
39K
47K
56K
68K
82K
100K
120K
150K
180K
220K
270K
330K
390K
470K
560K
680K
820K
1M
1M2
1M5
1M8
2M2
2M7
3M3
3M9
4M7
Special resistance available.
Taper:
Blank--Linear;
B—Log; C--Anti-Log
Resistance Tolerance
J = 5%, K = 10%, M = 20%
Tel: (949)642-7324
SECI Engineers & Buyers' Guide
Fax: (949)642-7327
