2

2-5

Model A

ELECTRICAL

Resistance Range, Ohms

10 to 500K

Standard Resistance Tolerance

< 100 Ohms = ±5%,

≥ 100 Ohms = ±3%

Minimum Practical Resistance Tolerance

±1%

Independent Linearity

< 300 Ohms = ±0.50%,

≥ 300 Ohms = ±0.25%

Minimum Practical Independent Linearity

±0.15%,

≤ 20 Ohms

±0.10%, < 100 Ohms

±0.075%, < 300 Ohms

±0.05%,

≥ 300 Ohms

Power Rating, Watts

5.0 at 40°C derating to 0 at 85°C

Input Voltage, Maximum

1,000Vdc not to exceed power rating

Dielectric Strength

1,000V rms

Insulation Resistance, Minimum

1,000 Megohms

Noise, Maximum

500 Ohms: RT

≤ 2613.7 Ohms

250 Ohms: RT > 2613.7 Ohms

Actual Electrical Travel

3600° + 4° – 0°

Tap Tolerance

≤ 20 Ohms = ±3°, < 100 Ohms = ±2°

< 300 Ohms = ±1.5°,

≥ 300 Ohms = ±1°

End Voltage, Maximum

10 Ohms = 3%, 25 Ohms = 1.2%

(% of input voltage)

50 Ohms = 0.6%,

≥100 Ohms = 0.25%

ENVIRONMENTAL (MIL-R-12934)

Operating Temperature Range

Static: –65°C to +85°C

Dynamic: –40°C to +85°C

Temperature Cycling

5 cycles, –65°C to +85°C (5%

∆R)

Shock, 6ms Sawtooth

100G’s (0.1ms discontinuity max.)

Vibration

6 hours, 10 to 55 Hz (5%

∆RT, 0.1ms discontinuity max.)

Moisture Resistance

Ten 24 hour cycles (3%

∆R)

High Temperature Exposure

1,000 hours at 85°C (5%

∆R)

Rotational Load Life

2 mil. shaft rev. + 900 hrs. at rated wattage at 40°C (5%

∆R)

MODEL A

1-13/16” Diameter

10-Turn

Wirewound

Precision Potentiometer

Specifications subject to change without notice.

This model available in a hybrid version – contact factory for details.