MIL-STD-1285-SUP-2 Marking of Electrical and Electronic PartsThis standard establishes requirements for the physical marking of electrical and electronic parts. This standard should be implemented by incorporating suitable requirements directly in acquisition documents.

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MIL-STD-1285D

APPENDIX H

H.3.2 Part identification marking.

H.3.2.1 Relay marking. Marking of relays shall conform to method I. Characteristics and ratings shall be marked in the following order of precedence:

a. Rated coil voltage (or current).

b. Operating frequency (if applicable). c. Contact ratings.

Where size limitations will not accommodate these characteristics and ratings, marking requirements shall be specified in the acquisition document in the order of precedence shown above.

H.3.2.2 Marking location. Unless otherwise specified in the acquisition document, all method I marking shall be applied to the top surface (opposite the terminal surface) of the relay case.