MIL-PRF-39015E
4.8.24.2 Push (applicable to all terminals except type L). Resistors shall be tested in accordance with
method 211 of MIL-STD-202. The following detail and exception shall apply:
a. Test condition: A, except force shall be applied in the direction towards the resistor body.
Applied force: 2 pounds. Resistors clamped by the resistor body, force applied to each terminal
individually.
b. Measurement after test: Resistors shall be examined for evidence of mechanical damage, and
tested for electrical continuity.
4.8.24.3 Bend (applicable to terminal types P, W, X, and Y). Resistors shall be firmly clamped and
each terminal shall be bent through 90 degrees at a point 0.125 inch from the body of the resistor, with
the radius of the curvature at the bend approximately 0.0625 inch. The pin shall be returned to the
original position, bent 90 degrees in the opposite direction, and again returned to the original position. At
the conclusion of the test, the resistors shall be examined for evidence of mechanical damage and tested
for electrical continuity.
following details and exceptions shall apply:
a. Method of mounting: Resistors shall be mounted by their normal mounting means, on a 0.0625
inch thick, glass base, epoxy laminate. The resistors shall be so arranged that the temperature of
any one resistor shall not appreciably influence the temperature of any other resistor. There shall
be no circulation of air over the resistors other than that caused by heat of the resistors.
b. Test temperature and tolerance: 85°C ±5°C.
c. Initial measurement: Measurements may be made inside or outside the chamber.
(1) Inside the chamber: When measurements are to be made inside the chamber, the initial total
resistance shall be measured between the clockwise terminal and the wiper for 50 percent of
the sample units, and between the counterclockwise terminal (see figure 1) and the wiper for
the remaining 50 percent of the sample units. The wiper shall be positioned at 95 percent ±2
percent of the total active element in each case. Resistance measurements shall be made
after units have been stabilized at 85°C ±5°C for at least 8 hours. This initial measurement
shall be used as the reference temperature for all subsequent measurements under the same
conditions.
(2) Outside the chamber: When measurements are to be made outside the chamber, the initial
total resistance shall be measured between the clockwise terminal and the wiper for 50
percent of the sample units, and between the counterclockwise terminal (see figure 1) and the
wiper for the remaining 50 percent of the sample units. The wiper shall be positioned at 95
percent ±2 percent of the total active element in each case. Resistance measurements shall
be made after units have been stabilized at room temperature for at least 8 hours. This initial
measurement shall be used as the reference temperature for all subsequent measurements
under the same conditions.
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