MIL-STD-1285 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

w/ CHANGE 1

APPENDIX L

L.3  GENERAL REQUIREMENTS

L.3.1  Department of Defense specification devices.

L.3.1.1  Marking.  For marking requirements of microelectronic circuit devices covered by MIL-PRF-38534, and

MIL-PRF-38535, and the associated specifications, see the applicable general specification (such as

MIL-PRF-38534, or MIL-PRF-38535).

L.3.1.2  Marking of Standard Microcircuit Drawings (SMD's).  For marking requirements of microelectronic circuit devices covered by SMD's, see the applicable drawing.  If any special marking (altered item drawing number) is used by the device supplier or user/equipment contractor, it shall be in addition to the existing/original marking as required in the applicable drawing and shall be visibly separate from and in no way interfere with the marking required by the SMD.

L.3.2  Permanency and legibility.

L.3.2.1  Permanence and legibility of marking.  The marking shall be permanent, legible and shall meet the marking permanence requirements of the applicable general specification (such as, MIL-PRF-38534, or

MIL-PRF-38535).

L.3.3  Non-military (SCD, VID, and AID) specification devices.

L.3.3.1  Acquisition documents other than Department of Defense specification devices.  Marking of microelectronic circuit devices covered by acquisition documents other than MIL-PRF-38534, and MIL-PRF-38535 and SMD's shall conform to method I and the following order of precedence.

a.  Index point (for example, see MIL-PRF-38535). b.  Part or Identifying Number (PIN) (see 5.2.1).

c.  Design activity code (see 5.2.2).

d.  Date code (for example, see MIL-PRF-38535). e.  Lot symbol (see 5.2.6).

f.  Serialization, when applicable (for example, see MIL-PRF-38535). g.  Manufacturer's identification (for example, see MIL-PRF-38535). h.  Country of origin.

i.  Electrostatic discharge sensitivity identifier (for example, see MIL-PRF-38535).

L.3.3.2  Marking of altered or selected items (see ASME Y14.100).  Items which are altered or selected from the controlling specification or standard shall be identified by a part number established by the using design activity drawing which depicts requirements for such alterations or selection.  The original number being replaced shall not be removed or obliterated.

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