MODEL 72
1
3/8 Square
Single Turn
Cermet Trimming
Potentiometer
ELECTRICAL
Standard Resistance Range, Ohms 10 to 2Meg
Standard Resistance Tolerance 10% (<100 Ohms = 20%)
Input Voltage, Maximum 200 Vdc or rms not to exceed power rating
Slider Current, Maximum 100mA or within rated power, whichever is less
Power Rating, Watts 0.5 at 85C derating to 0 at 125C
End Resistance, Maximum 2 Ohms
Actual Electrical Travel, Nominal 244
Dielectric Strength 900 Vrms
Insulation Resistance, Minimum 1,000 Megohms
Resolution Essentially infinite
Contact Resistance Variation, Maximum 1% or 1 Ohm, whichever is greater
ENVIRONMENTAL
Seal 85C Fluorinert (No Leaks)
Temperature Coefficient, Maximum 100ppm/C
Operating Temperature Range 55C to +125C
Thermal Shock 5 cycles, 55C to +125C (1% RT, 1% VR)
Moisture Resistance Ten 24 hour cycles (1% RT, IR 100 Megohms Min.)
Shock, 6ms Sawtooth 100Gs (1% RT, 1% VR)
Vibration 20Gs, 10 to 2,000 Hz (1% RT, 1% VR)
High Temperature Exposure 250 hours at 125C (2% RT, 2% VR)
Rotational Life 200 cycles (3% RT)
Load Life at 0.5 Watts 1,000 hours at 70C (2% RT)
Resistance to Solder Heat 260C for 10 sec. (1% RT)
MECHANICAL
Mechanical Stops Solid
Torque, Starting Maximum 3 oz.-in. (0.021 N-m)
Weight, Nominal .025 oz. (0.70 grams)
Fluorinert is a registered trademark of 3M Company.
Specifications subject to change without notice.
1-55
Model 72TOP ADJUSTMENT (Inch/mm)
Model 72P
Model No., Resistance Value And
Date Code marked on side
Electrical Adjustment
.13 .005/3.3 .13 Long x
2
.021 .003/.53 .08
.187 .015
.03 .003/.76 .08 Wide x
1
Solderable Terminals
4.75 .38
3 .100 .010
.038 .005/.96 .13 Deep
2.5 .3
.375 .015
9.53 .38
Standoffs
.187 .015
.100 .010
4.75 .38
2.5 .3
.100 .010
Min.
2.5 .3
.375 .015
9.53 .38
Note: Model 72P dimensions applicable to all other models except as noted.
Model 72PL Model 72PM
.100 .010
.187 .015
2.5 .3
4.75 .38
.015 .010
.38 .3
.187 .015
1
4.75 .38
2
3
1
2
3
.100 .010
.100 .010
2.5 .3
.10 .010
2.5 .3 .100 .010
.187 .015 2.5 .3
2.5 .3
4.75 .38
.200 .010
5.1 .3
Model 72PX, 72RPX
Model 72RP
.015 .010
.100.010 .160.015
.38 .3
2.5.3 4.6.38
.187.015
3
1
4.75.38
2
3
2
.150 .010
1
.150 .010
3.8 .3
.100.010
3.8 .3
.100.010
.187 .015
2.5.3
2.5.3
4.75 .38
Model 72RPX - Terminals 1 and 3 are reversed
Model 72
1-56
.206 .015
.015 .002
5.23 .38
.38 .05
.187 .015
.180
4.75 .38
4.6