MIL-DTL-917F(SH)
3.13.25 Connectors, plug and receptacle types. When plug-in connectors are used (see 3.12.2.4 and 3.12.2.8
for conditions and limitation), the following requirements shall apply. The mating parts of all connectors shall be
furnished with the equipment. Connector plugs or receptacles which continue to be energized after unmating shall
have socket contacts. Externally mounted connectors shall be provided with a protective cap. The protective cap
shall be affixed adjacent to the connector receptacle. Connectors shall be as specified in 3.13.25.1 through
3.13.25.1 Electrical connectors. Connectors shall be selected in accordance with MIL-STD-1353. Circular
connectors intended to mate with shipboard jacketed cable shall be selected from the insert arrangements identified
in MIL-STD-1683.
3.13.25.2 Shield grounding ferrules. Shield grounding ferrules shall be insulated crimp type in accordance
with SAE-AS21608.
3.13.25.3 General utility connectors. Connectors used to provide power to protected portable auxiliary
equipment shall be of the parallel bladed three-wire grounding type in accordance with W-C-596 and W-C-596/13.
Connector receptacles shall be in accordance with W-C-596/12. Plugs and receptacles shall be in accordance with
MIL-DTL-2726.
3.13.26 Printed wiring assemblies. Printed wiring assemblies shall conform to the following:
a. Unless otherwise specified herein, the printed wiring assemblies shall be manufactured and inspected to
comply with the design requirements of IPC-2221.
b. A conformal coating in accordance with IPC-2221 shall be provided on all boards. Only Type AR
conformal coating shall be used for new design PWAs unless otherwise approved by NAVSEA. However, Type
AR, SR, UR, or XY conformal coating may be used for assemblies that are considered non-repairable (i.e.,
throwaway assemblies). The coating shall be easily removable by means of a soldering iron without damage to the
printed wiring board and shall be inspected to the acceptance criteria of IPC-2223.
c. Refer to MIL-PRF-55110 for guidance on rigid printed wiring boards. All other printed wiring boards
shall be in accordance with MIL-PRF-31032.
d. Printed wiring boards shall be plug-in, and shall include a keying provision so that it is not possible to
insert a board into the wrong location. A track shall be provided to guide the wiring board into place to assist
installation.
e. All mounting hardware shall be captive. No special tools shall be required to remove or install a printed
wiring board.
f. An extender board shall be provided to assist in troubleshooting the printed wiring assembly and shall
extend all printed wiring circuits including ground. Test jacks shall be provided for each conductor on the extender
board, which will accept test probes with the probe axis perpendicular to the board surface. These test jacks shall be
accessible with the assembly being tested installed on the extender board and without removing any other assembly.
g. Unless otherwise specified (see 6.2), printed wiring boards or conductor patterns or both shall not be
repaired. This requirement applies to the board laminate, printed conductors, and terminal areas and is not intended
to prevent replacement of defective parts mounted on a printed wiring board. Printed circuit boards that are an
integral part of a component or an assembly, and are not intended to be readily removed from the component, but
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