MIL-PRF-22684F
d. Number and direction of applied shocks: The resistors shall be subjected to a total of 10 shocks in each of
two mutually perpendicular planes, one perpendicular and the other parallel to the longitudinal axis of the
resistor.
e. Measurement during shock: Each resistor shall be monitored to determine electrical discontinuity by a
method which shall at least be sensitive enough to monitor or register, automatically, any electrical
discontinuity of 0.1 millisecond or greater duration.
f. Measurement after shock: DC resistance shall be measured as specified in 4.6.2.
g. Examination after test:: Resistors shall be examined for evidence of mechanical and electrical damage.
4.6.14 Vibration, high frequency (see 3.19). Resistors shall be tested in accordance with method 204 of
MIL-STD-202. The following details and exceptions shall apply:
a. Mounting of specimens: Resistors shall be mounted on appropriate jig fixtures with their bodies restrained
from movement and their leads supported at a distance of .25 inch (6.35 mm) from the resistor body. These
fixtures shall be constructed to insure that the points of the resistor mounting supports will have the same
motion as the vibration test table. The fixtures shall also be of a construction that will preclude any resonance
in the fixture when subjected to vibration within the test frequency range, and the fixture shall be monitored for
these features on the vibration table. Test leads used during this test shall be no larger than AWG size 22
stranded wire, so that the influence of the test lead on the resistor will be held to a minimum. The test lead
length shall be no greater than is absolutely necessary. A shielded cable which may be necessary because
of the field surrounding the vibration table shall be clamped to the resistor mounting jig.
b. Initial measurement: DC resistance shall be measured as specified in 4.6.2.
c. Test condition: D.
d. Direction of motion: In each of two mutually perpendicular directions, one perpendicular, and the other is
parallel to the longitudinal axis of the resistor. Six hours in each direction for a total of 12 hours.
e. Measurement during test: Each resistor shall be monitored to determine electrical discontinuity by a method
which shall at least be sensitive enough to monitor or register, automatically, any electrical discontinuity of 0.1
millisecond or greater duration.
f. Measurement after vibration: DC resistance shall be measured as specified in 4.6.2.
g. Examination after test: Resistors shall be examined for evidence of mechanical and electrical damage.
4.6.15 Solderability (see 3.20). Resistors shall be tested in accordance with method 208 of MIL-STD-202. The
following detail shall apply:
a. One or two terminal leads of each resistor shall be tested.
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