Document Number: 51045

For technical questions, contact: sfer@vishay.com

www.vishay.com

Revision: 19-Jan-04

25

TSM43

Surface Mount Cermet Trimmers

Multi-turn Cermet Sealed, Industrial Grade

Vishay Sfernice

ELECTRICAL SPECIFICATIONS

Resistive Element

Cermet

Resistance Range

10

Ω to 2MΩ

Electrical Travel

11 turns nominal

Tolerance Standard

±10%

Power Rating

0.25W at + 85°C

0W at + 150°C

Limiting Element Voltage (Linear Law)

300V

Resolution

infinite

Temperature Coefficient

± 100ppm/°C

Contact Resistance Variation (CRV)

1% or 3

Ω max

Minimum Resistance (absolute)

1% or 2

Ω max (whichever is greater)

Sea Level Dielectric Strength (RMS)

600Vac (1 minute)

Insulation Resistance (500 VDC)

100M

Ω mini.

MECHANICAL SPECIFICATIONS

End Stop Torque

clutch action

Operating Torque

180 g.cm max

Unit Weight (approx.)

0.28 g.

Solderability

Per MIL-STD-202

Method 208

Wiper

positioned at 50%

nominal

Flammability

UL-94V-0

ENVIRONMENTAL SPECIFICATIONS

Temperature Range

– 65°C + 150°C

POWER RATING CHART

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

Load Life

1000 hours at rated power

90'/30' - ambient temperature + 85°C

Total resistance shift = ± 3

Ω or ± 3%

whichever is greater

Humidity Moisture Resistance

MIL STD 202 Method 106

10 cycles of 24 hours constituted

with damp heat - cold - vibrations

Total resistance shift = ± 2%

insulation resistance: 10M

Ω

Thermal Shock

5 cycles

Total resistance shift = ± 2%

Voltage resistance shift = ± 1%

Rotational Cycling

100 cycles - rated powers

± 3%

Shock

MIL STD 202 Method 213/1

100 g - 6 ms

3 successive shocks in 3 directions

Total resistance shift = ± 1%

Voltage resistance shift = ± 1%

Vibration

MIL STD 202 Method 204/D

20 g - 12 hours

Total resistance shift = ± 1%

Voltage resistance shift = ± 1%