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MODEL 91
3/8” Diameter
Single Turn
Cermet Trimming
Potentiometer
ELECTRICAL
Standard Resistance Range, Ohms
Standard Resistance Tolerance
Input Voltage, Maximum
Slider Current, Maximum
Power Rating, Watts
End Resistance, Maximum
Actual Electrical Travel, Nominal
Dielectric Strength
Insulation Resistance, Minimum
Resolution
Contact Resistance Variation, Maximum
ENVIRONMENTAL
Temperature Coefficient, Maximum
Operating Temperature Range
Thermal Shock
Moisture Resistance
Shock, 6ms Sawtooth
Vibration
High Temperature Exposure
Rotational Life
Load Life at 0.5 Watts
Resistance to Solder Heat
MECHANICAL
Mechanical Stops
Stop Strength
Torque, Starting Maximum
Weight, Nominal
Specifications subject to change without notice.
1-83
10 to 2Meg
±20%
250 Vdc or rms not to exceed power rating
100mA or within rated power, whichever is less
0.5 at 70°C derating to 0 at 125°C
2 Ohms
174°
500 Vrms
1,000 Megohms
Essentially infinite
1% or 1 Ohm, whichever is greater
±100ppm/°C
–55°C to +125°C
5 cycles, –55°C to +125°C (1% ? RT, 1% ? VR)
Ten 24 hour cycles (1% ? RT, IR 100 Megohms Min.)
100G’s (1% ? RT, 1% ? VR)
20G’s, 10 to 2,000 Hz (1% ? RT, 1% ? VR)
250 hours at 125°C (2% ? RT, 2% ? VR)
200 cycles (3% ? RT)
1,000 hours at 70°C (2% ? RT)
260°C for 10 sec. (1% ? RT)
Solid
12 oz.-in. (0.085 N-m)
5oz.-in. (0.042 N-m)
.03 oz. (0.85 grams)
Model 91
1
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