MODEL 72
3/8” Square
Single Turn
Cermet Trimming
Potentiometer
ELECTRICAL
1
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
10 to 2Meg
±10% (<100 Ohms = ±20%)
200 Vdc or rms not to exceed power rating
100mA or within rated power, whichever is less
0.5 at 85°C derating to 0 at 125°C
2 Ohms
244°
900 Vrms
1,000 Megohms
Essentially infinite
1% or 1 Ohm, whichever is greater
Seal
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
85°C Fluorinert® (No Leaks)
±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)
Mechanical Stops
Torque, Starting Maximum
Weight, Nominal
Fluorinert® is a registered trademark of 3M Company.
Specifications subject to change without notice.
Solid
3 oz.-in. (0.021 N-m)
.025 oz. (0.70 grams)
1-55
Model 72
TOP ADJUSTMENT (Inch/mm)
Model 72P
Model No., Resistance Value And
Date Code marked on side
.187
±
.015
4.75
±
.38
.375
±
.015
9.53
±
.38
.187
±
.015
4.75
±
.38
.100
±
.010
2.5
±
.3
.100
±
.010
2.5
±
.3
.375
±
.015
9.53
±
.38
Standoffs
.015
±
.002
.38
±
.05
.187
±
.015
4.75
±
.38
1
2
.100
±
.010
2.5
±
.3
Ø.021
±
.003/.53
±
.08
Solderable Terminals
3
Electrical Adjustment
.13
±
.005/3.3
±
.13 Long x
.03
±
.003/.76
±
.08 Wide x
.038
±
.005/.96
±
.13 Deep
.206
±
.015
5.23
±
.38
.180
Min.
4.6
Note: Model 72P dimensions applicable to all other models except as noted.
Model 72PL
.015
±
.010
.38
±
.3
Model 72PM
.100
±
.010
2.5
±
.3
.187
±
.015
4.75
±
.38
1
2
3
.187
±
.015
4.75
±
.38
3
2
.100
±
.010
2.5
±
.3
1
.100
±
.010
2.5
±
.3
.187
±
.015
4.75
±
.38
.100
±
.010
2.5
±
.3
.200
±
.010
5.1
±
.3
.10
±
.010
2.5
±
.3
Model 72PX, 72RPX
.015
±
.010
.38
±
.3
3
2
.150
±
.010
3.8
±
.3
1
.150
±
.010
3.8
±
.3
.187
±
.015
4.75
±
.38
Model 72RP
.100±.010
2.5±.3
.187±.015
4.75±.38
.160±.015
4.6±.38
2
.100±.010
2.5±.3
3
1
.100±.010
2.5±.3
Model 72RPX - Terminals 1 and 3 are reversed
1-56
Model 72
SIDE ADJUSTMENT (Inch/mm)
1
Model 72X, 72RX
Model 72XL, 72RXL, 72RW
.386
9.80
3
2
1
.017
±
.003
.43
±
.08
Standoffs
.100
±
.010
2.5
±
.3
.100
±
.010
2.5
±
.3
.100
±
.010
2.5
±
.3
.187
±
.015
4.75
±
.38
3
2
1
.017
±
.003
.43
±
.08
Standoffs
.187
±
.015
4.75
±
.38
.100
±
.010
2.5
±
.3
.100
±
.010
2.5
±
.3
.050
±
.015
1.27
±
.38
72XL, 72RXL
.140
±
.015
3.56
±
.38
72RW
.100
±
.015
2.5
±
.38
Model 72RX - Terminals 1 and 3 are reversed
Model 72RXL And 72RW - Terminals 1 and 3 are reversed
Model 72XW, 72RXW
.017
±
.003
.43
±
.08
Standoffs
3
2
.150
±
.010
3.8
±
.3
1
.150
±
.010
3.8
±
.3
.187
±
.015
4.75
±
.38
.140
±
.015
3.56
±
.38
Model 72RXW - Terminals 1 and 3 are reversed
1-57
Model 72
EXTENDED ROTOR OPTION (Inch/mm)
ADJUSTMENT KNOB OPTION (Inch/mm)
Available for all Model 72 pin styles:
72PE, 72PLE, 72PME, 72PXE, 72RPXE, 72XE, 72RXE,
72XLE, 72RXLE, 72RWE, 72XWE, 72RXWE
Available options:
72XT- Side Adjustment
(See 72X for Pin Configuration)
72PT- Top Adjustment
(See 72P for Pin Configuration)
.310±.031
7.87±0.79
Electrical Adjustment
.14
±
.005/3.56
±
.13 Dia. x
.04
±
.003/1.02
±
.08 Wide x
.063
±
.005/1.60
±
.13 Deep Slot
Ø.330
±
.01
8.38
±
.13
Adjustment Knob Slot
.220
±
.005/5.59
±
.13 Long x
.040
±
.005/1.02
±
.13 Wide x
.045
±
.005/1.14
±
.13 Min. Depth
.206
±
.015
5.23
±
.38
.410
±
.02
10.41
±
.51
72PT Shown - Dimensions applicable to 72XT
STANDARD RESISTANCE VALUES, OHMS
10
20
50
100
200
500
1K
2K
5K
10K
20K
25K
50K
100K
200K
250K
500K
1Meg
2Meg
1-58
Model 72
PACKAGING
1
Standard:
Boxes
Capacity
Option:
=
100 Units
Tubes
All units oriented with #1 pin to same side.
Pin Style
Width
Height
Length
Capacity
P, PM
0.47”
0.54”
20.5”
50 Units
X, XL, XW, RW
0.29”
0.76”
20.1”
50 Units
Magazine
=
=
=
=
Option:
Tape & Reel, Ammo Pack (Available only for 72RW only)
All units oriented with #1 pin to the right of the direction of feed.
Seat Plane to
Centerline of
Sprocket Hole
Width
Sprocket
Capacity
Diameter
Tape Fold
Box
Tape
Reel
Ammo
=
=
=
=
=
=
=
.71” (18.03 mm)
18 mm
Single Hole .50” spacing
1,000 Units
14” (356mm)
12” (305mm)
1.8” x 13” x 10” (46mm x 330mm x 254mm)
1-59
Model 72
