MIL-PRF-81F
4.6.13 Vibration, high frequency (see 3.16). Capacitors shall be tested in accordance with
method 204 of MIL-STD-202. The following details and exception shall apply.
Mounting of specimens: Capacitors shall be mounted as specified in 4.6.12a. The mounting fixture shall be
a.
so constructed as to preclude any resonance within the test range. An inspection of the mounting fixture shall
be made on a vibrator. If any resonant frequencies are observed, adequate steps must be taken to damp the
structure.
b.
Electrical-load conditions: As specified in 4.6.12d.
c.
Test condition letter: B.
d.
Measurements during vibration: During the last cycle in each direction and electrical measurement shall be
made to determine intermittent contacts of 0.5 ms or greater duration or open or short circuiting.
e.
Examination after vibration: Capacitors shall be visually examined for evidence of mechanical damage.
f.
Final measurements: After the final vibration cycle, the initial capacitance setting shall not be disturbed.
Dielectric withstanding voltage, capacitance, and dissipation factor shall be measured as specified in 4.6.2,
4.6.14 Moisture resistance (see 3.17). Capacitors shall be tested in accordance with
method 106 of MIL-STD-202. The following details shall apply.
a.
Mounting: Securely fastened by normal mounting means.
b.
Initial measurements: Capacitance shall be set at 80 percent to 90 percent of maximum rated capacitance
and measured as specified in 4.6.5. Capacitance measurements shall be made not less than 1 hour nor
more than 4 hours before test initiation.
c.
Polarization and load: Not applicable.
d.
Final measurements: After the final cycle, the initial capacitance setting shall not be disturbed. Insulation
resistance, dissipation factor, and capacitance shall be measured as specified in 4.6.4, 4.6.5, and 4.6.6,
respectively.
5. PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or
order (see 6.2). When packaging of material is to be performed by DoD or in-house contractor personnel, these
personnel need to contact the responsible packaging activity to ascertain packaging requirements. Packaging
requirements are maintained by the Inventory Control Point's packaging activities within the Military Service or
Defense Agency, or within the military service's system commands. Packaging data retrieval is available from the
managing Military Department or Defense Agency's automated packaging files, CD-ROM products, or by contacting
the responsible packaging activity.
13
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business