MIL-DTL-25516F
4.7.15 Vibration. The connector assembly shall be mounted as shown on figure 3 and vibrated in
accordance with test procedure 028 of EIA 364, condition IV. In addition, vibration shall be conducted at a
low temperature ambient of 55°C and a high ambient of 200°C. Inner and outer contacts shall be wired
in series with at least 100 milliamperes of current flowing. The open circuit test voltage shall be 6 volts. A
suitable instrument shall be used to monitor current flow and to indicate any discontinuity of contact or
interruption of current flow. Duration of vibration at extremes of temperature shall be 25 percent of the
duration specified for the standard temperature condition. The connectors shall remain in full engagement
during vibration. The coupling device shall not loosen and there shall be no cracking or breaking of parts
(see 3.6.14).
4.7.15.1 Connector mounting. The vibration mounting shall be in accordance with figure 3 except as
specified herein. The receptacle shall be mounted on an adapter plate, using the normal mounting
provisions and suitable hardware. The connector mounting bracket may be of another design, provided
the connectors received the required magnitude of vibration. The associated plug or adapter shall be
mated with the receptacle, as used in service. Safety wires or supplementary locking devices shall not be
used.
4.7.16 High temperature. Mated connectors shall be subjected to 200°C for 1 hour. At the end of this
time and while at the elevated temperature the connectors shall be subjected to the insulation resistance
test 4.7.2 and the contact resistance test 4.7.4 (see 3.6.15).
4.7.17 Fuel immersion. Mated and cabled connectors shall be immersed in type II hydrocarbon fuel in
accordance with ASTM D471 at +71°C for 7 days. Following this test, the connectors shall unmate and
mate satisfactorily with their corresponding plug or receptacle and pass the insulation resistance, dielectric
withstanding voltage and contact resistance tests (see 3.6.16).
4.7.17.1 Fluids. Separate samples of each of the nonmetallic parts of the connectors shall be
immersed in each of the fluids listed in table XI for the specified time and temperature. At the end of this
period, all parts shall be rinsed, air blasted, and dried at 40°C for 24 hours. A visual inspection shall be
made to insure that there is no cracking, peeling, splitting, blistering, or swelling.
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