MIL-PRF-39012E
4.6.14 Dielectric withstanding voltage (see 3.17). Connectors shall be tested in accordance with
method 301 of MIL-STD-202. The following details shall apply:
a. Special preparation or conditions.
(1) The maximum relative humidity shall be 50 percent. When facilities are not
available at this test condition, connectors shall be tested at room ambient relative
humidity. In case of dispute, if the test has been made at room ambient relative
humidity, retest shall be made at 50 percent maximum relative humidity.
(2) The center contact of plug connectors and receptacle connectors shall be
positioned in such a manner as to simulate actual assembly conditions.
(3) Precautions shall be taken to prevent air-gap voltage breakdowns.
(4) The voltage shall be metered on the high side of the transformer.
b. Magnitude of test voltage (see 3.1): The voltage shall be instantaneously applied.
c.
Nature of potential: Alternating current.
d. Points of application of test voltage: Between the center contact and body.
4.6.15 Vibration (see 3.18). A complete connector assembly shall be mounted as shown on figure 3
contacts shall be connected to a suitable monitoring device. Suitable coaxial cable or wire as
applicable, using the normal connecting devices of the connector and clamped as shown on figure 3,
shall be used. At least 100 milliamperes shall be flowing through each set of contacts. Contacts may
be connected in series. The connector shall be mounted by its normal mounting device and engaged
by its normal coupling device. No safety wire shall be used. Cable to cable connectors may be held
to the jig on figure 3 by a suitable clamp on one half of the connector assembly. The following
conditions shall apply:
a. Test condition letter (see 3.1).
b. Continuity shall be monitored during vibration with a detector capable of detecting
interruptions of 1 µs duration or longer, or as specified at 100 milliamperes.
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