MIL-PRF-94G
3.5.4.2 Tapers C and F (nonlinear) resistors. The minimum resistance shall not exceed the values listed in
table VII.
TABLE VII. Minimum resistance (tapers C and F).
Clockwise maximum value of
Counterclockwise maximum value
minimum resistance (measured
of minimum resistance (measured
Total
between 3 and 2 terminals, see
between 1 and 2 terminals, see
resistance
figure 1) (ohms).
figure 1) (ohms).
Taper C
Taper F
Taper C
Taper F
ohms
100
to
750 incl
20
5 1/
5 1/
20
1,000
to
5,000 incl
100
25
25
100
7,500
to 10,000 incl
200
25
25
200
15,000
to 25,000 incl
250
35
35
250
35,000
to 50,000 incl
500
35
35
500
75,000
to 0.1 megohm
1,000
35
35
1,000
Megohms
0.15 to
0.25 incl
2,500
50
50
2,500
0.35 to
0.50 incl
5,000
100
100
5,000
0.75 to
1.00 incl
10,000
200
200
10,000
1.50 to
2.50 incl
25,000
500
500
25,000
3.50 to
5.00 incl
50,000
600
600
50,000
1/ Applicable to all styles except RV6. For value of RV6, see 3.1
3.6 Torque (see 4.7.3).
3.6.1 Operating. The torque required to rotate the contact arm shall be as specified (see 3.1). An additional
torque of 15 ounce-inches shall be permitted for operation of attached switches.
3.6.2 Stops. Resistors shall withstand the stop torque specified (see 3.1) without damage to the contact arm and
stop.
3.6.3 Locking. Resistors with locking bushings shall withstand the locking torque specified (see 3.1) without
damage to the bushings and threads. The contact arm shall not move when subjected to the test specified in 4.7.3.3.
3.7 Dielectric withstanding voltage. When resistors are tested as specified in 4.7.4, resistors or switches, as
required, shall withstand the application of potentials without damage, arcing, or breakdown.
3.8 Solderability. When resistors are tested as specified in 4.7.5, resistors shall meet the criteria for tab evaluation
in the test method.
3.9 Resistance to soldering heat. When resistors are tested as specified in 4.7.6, resistors shall show no evidence
of mechanical damage and the change in resistance shall not exceed 2 percent.
3.10 Rotational life. When resistors are tested as specified in 4.7.7, the permanent change in resistance shall not
exceed 10 percent, nor shall proper contact between the resistance element and the contact arm be broken during or
as a result of the test, and shall show no evidence of mechanical damage.
3.11 Switch life. Switches shall show no evidence of damage when they make, carry, and break the current as
specified in 4.7.8. The contact resistance shall not exceed 0.10 ohm.
8
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