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For technical questions, contact: sfer@vishay.com

Document Number: 51009

22

See also: Application notes

Revision: 02-Oct-07

TSM4

Vishay Sfernice

Surface Mount Miniature Trimmers

Multi-Turn Cermet Sealed

MECHANICAL SPECIFICATIONS

Mechanical Travel

13 turns ± 2

Operating Torque (max. Ncm) 1

End Stop Torque (Ncm)

clutch action (2 turns max)

Unit Weight (max. g)

0.15

Wiper (actual travel)

positioned at approx. 50 %

ENVIRONMENTAL SPECIFICATIONS

Temperature Range

- 55 °C to + 125 °C

Climatic Category

55/125/56

Sealing

sealed container

solder immersion IP67

MSL Level

1

POWER RATING CHART

ELECTRICAL SPECIFICATIONS

Resistive Element

Cermet

Electrical Travel

11 turns ± 2

Resistance Range

10

Ω to 1 MΩ

Standard Series

1 - 2 - 5

Tolerance Standard

± 10 %

Power Rating

Linear

0.25 W at + 85 °C

Logarithmic

Not applicable

Temperature Coefficient

See Standard Resistance Element Table

Limiting Element Voltage (Linear Law)

200 V

Contact Resistance Variation (Typical)

2 % or 3

Ω

End Resistance (Typical)

1

Ω

Dielectric Strength (RMS)

600 V

Insulation Resistance

Ω

0

20

40

60

85

100

120

140

155

0

0.125

0.25

AMBIENT TEMPERATURE IN DEGREES CELSIUS

PERFORMANCE

TESTS

CONDITIONS

TYPICAL VALUES AND DRIFTS

ΔRT

RT

(%)

(%)

Load Life

1000 hours at rated power

90'/30' - ambient temperature + 85 °C

± 2 %

± 3 %

Contact resistance variation:

Δ > 1 % Rn

Moisture Resistance

MIL STD 202 Method 106

10 cycles of 24 hours constituted

with damp heat - cold - vibrations

± 2 %

± 3 %

Dielectric strength: 1000 V RMS

Ω

Long Term Damp Heat

Temperature 40 °C - RH 93 %

56 days

± 2 %

± 3 %

Ω

Thermal Shock

- 55 °C to + 125 °C - 5 cycles

± 1 %

≤ ± 2 %

Rotational Life (Electrical and Mechanical)

100 cycles - rated power

± (3 % + 3

Ω)

Shock

MIL STD 202 Method 213/1

100 g - 6 ms

3 successive shocks in 3 directions

± 1 %

≤ ± 1 %

Vibration

MIL STD 202 Method 204/D

20 g - 12 hours

± 1 %

≤ ± 1 %