MODEL 84
1
1/4 Square
Multiturn
Surface Mount
Cermet Trimming
Potentiometer
ELECTRICAL
Standard Resistance Range, Ohms 10 to 1Meg
Standard Resistance Tolerance 10%
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 0.25 at 85C derating to 0 at 150C
End Resistance, Maximum 2 Ohms
Actual Electrical Travel, Turns, Nominal 12
Dielectric Strength 900 Vrms
Insulation Resistance, Minimum 1,000 Megohms
Resolution Essentially infinite
Contact Resistance Variation, Maximum 1% or 1 Ohms, whichever is greater
ENVIRONMENTAL
Seal 85C Fluorinert (No Leaks)
Temperature Coefficient, Maximum 100ppm/C (<100 Ohms = 250ppm/C)
Operating Temperature Range 65C to +150C
Thermal Shock 5 cycles, 65C to +150C (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 150C (2% RT, 2% VR)
Rotational Life 200 cycles (3% RT)
Load Life at 0.25 Watts 1,000 hours at 85C (2% RT)
Resistance to Solder Heat 260C for 10 sec. (1% RT)
Temperature Exposure, Maximum 215C for 3 min. (1% RT)
MECHANICAL
Mechanical Stops Clutch action, both ends
Torque, Starting Maximum 3 oz.-in. (0.021 N-m)
Weight, Nominal .014 oz. (.40 grams)
Fluorinert is a registered trademark of 3M Company.
Specifications subject to change without notice.
Model 84
1-73~
~
~
TOP ADJUSTMENT (Inch/mm) SIDE ADJUSTMENT (Inch/mm)
Model 84W
Model 84X
.050 .010 .040 .010
1.27 0.25 1.02 0.25
Standard Marking
.170 .015
.040 .010
On This Surface
4.32 0.38
1.02 0.25
Standard Marking
On This Surface
C
L
.250 .020
6.35 0.51 .050 .010
1.27 0.25
.040 .015
1.02 0.38
(1) (2) (3)
Metal Adjustment Screw
.070 .005
With
1.78 0.13
.295 .015
.020
Min. Wide x 7.49 0.38
0.51 .040 .015
3x
.020
1.02 0.38
Min. Depth
0.51
(1) (2) (3)
.005
.100
Min.
0.13
2.54
.040 .015 .100
3x
Terminal Pins:
1.02 0.38 2.54
Solderable C
L
.018 .002
3x
Recommended PCB Layout - Models 84W and 84X
0.46 .051
.040 .015
.070 .015
3x
3x
1.02 0.38
1.78 0.38
Housing: Molded Plastic
.100 .110 .015
(2)
3x
2.54 2.80 0.38
.100 .295 .005
(1) (3)
2.54
7.49 0.13
C
L
.100
2.54
Note: Model 84W dimensions applicable to all models
.100
except as noted. 2.54
SIDE ADJUSTMENT (Inch/mm)
Model 84P
Recommend PCB Layout - Model 84P
Standard Marking .105 .015
3x
.125 .015
On This Surface 2.67 0.38
3x
.100
3.18 0.38
.100
2.54
2.54
(3)
(2) (3)
.210 .015
C
L
.040 .010
5.33 0.38
(1)
(2)
1.02 0.25
.040 .015
(1)
3x
1.02 0.38
(1) (2) (3)
.100
.100
.375 .015
.040 .015
3x 2.54
.250 .020 2.54 9.53 0.13
1.02 0.38
6.35 0.51
Model 84
1-74
