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For technical questions, contact: sfer@vishay.com

Document Number: 51034

118

See also: Application notes

Revision: 06-Jul-06

P13

Vishay Sfernice

Fully Sealed Container Cermet Potentiometers

Military and Professional Grade

MECHANICAL SPECIFICATIONS

Mechanical Travel

300° ± 5°

Operating Torque (max. Ncm)

2 typical

End Stop Torque (max. Ncm)

style T.Q.: 35 - V: 80

Tightening Torque (max. Ncm)

T.Q.: 150 - V: 250

Unit Weight (max. g)

6 to 18

POWER RATING CHART

TEMPERATURE COEFFICIENT

For values

≥ 100 ohms and in the temperature range + 20 °C

to + 70 °C, the typical temperature coefficient is ± 75 ppm/°C.

ENVIRONMENTAL SPECIFICATIONS

Temperature Range

- 55 °C to + 125 °C

Climatic Category

55/100/56

Sealing

fully sealed

container IP67

RESISTANCE LAWS

ELECTRICAL SPECIFICATIONS

Resistive Element

cermet

Electrical Travel

270° ± 10°

Resistance Range

Linear Law

22

Ω to 10 MΩ

Logarithmic Laws

100

Ω to 2.2 MΩ

Standard series E3

1 - 2.2 - 4.7 and on request 1 - 2 - 5

Tolerance

Standard

± 20 %

On Request

± 10 % - ± 5 %

Power Rating

Linear

1.5 W at + 70 °C

Logarithmic

0.75 W at + 70 °C

Temperature Coefficient

See Standard Resistance Element Data

Limiting Element Voltage (Linear Law)

350 V

Contact Resistance Variation

3 % Rn or 3

Ω

End Resistance (Typical)

1

Ω

Dielectric Strength (RMS)

2000 V

Insulation Resistance (500 VDC)

Ω

0

40

140

125

0.75

0

AMBIENT TEMPERATURE IN DEGREES CELSIUS

70

60

20

100

80

LIN. LAW “A”

LOG. LAWS “L & F”

1.5

100

80

60

40

20

0

0

100

80

60

40

20

% CLOCKWISE SHAFT ROTATION

F

L

A