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For technical questions, contact: sfer@vishay.com

See also: Application notes

Document Number: 51020

52

Revision: 26-Oct-06

P8S

Vishay Sfernice

Fully Sealed Container Cermet Trimmers

ELECTRICAL SPECIFICATIONS

Resistive Element

cermet

Electrical Travel

270° ± 15°

Resistance Range

10

Ω to 2.2 MΩ

Standard series E3

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

Tolerance

Standard

± 10 %

On Request

± 5 %

Power Rating

P8SX - P8SY

0.5 W at 70 °C

P8ST

1 W at 70 °C

Temperature Coefficient

See Standard Resistance Element Table

Limiting Element Voltage (Linear Law)

250 V

Contact Resistance Variation

3 % Rn or 3

Ω

End Resistance (Typical)

1

Ω

Dielectric Strength (RMS)

1000 V

Insulation Resistance (500 VDC)

1 G

Ω

MECHANICAL SPECIFICATIONS

Mechanical Travel

300° ± 5°

Operating Torque (max. Ncm)

3

End Stop Torque (max. Ncm)

6

Unit Weight (max. g)

1... 3.1

ENVIRONMENTAL SPECIFICATIONS

Temperature Range

- 55 °C to + 125 °C

Climatic Category

55/125/56

Sealing

fully sealed

container IP67

POWER RATING CHART

PERFORMANCE

TESTS

CONDITIONS

TYPICAL VALUES AND DRIFTS

ΔRT

RT

(%)

(%)

Load Life

1000 hours at rated power

90’/30’ - ambient temperature 70 °C

± 2 %

± 3 %

Contact res. variation: < 3 % Rn

Climatic Sequence

Phase A dry heat 100 °C

Phase B damp heat

Phase C cold - 55 °C

Phase D damp heat 5 cycles

± 0.5 %

± 1 %

Long Term Damp Heat

56 days

40 °C, 93 % RH

± 1 %

± 2 %

Dielectric strength: 1000 V RMS

Ω

Rapid Temperature Change

5 cycles

- 55 °C to + 125 °C

± 0.5 %

≤ ± 1 %

Shock

50 g at 11 m secs

3 successive shocks

in 3 directions

± 0.2 %

± 0.5 %

Vibration

10 - 55 Hz

0.75 mm or 10 g

during 6 hours

± 0.2 %

≤ ± 0.5 %

Rotational Life

200 cycles

± 3 %

Contact res. variat.: < 3 % Rn

0

20

40

100

125

140

70

60

0.5

0

1

AMBIENT TEMPERATURE IN DEGREES CELSIUS

80

P8SX - P8SY

P8ST