MIL-STD-1285D
w/ CHANGE 1
APPENDIX N
N.3 GENERAL REQUIREMENTS
N.3.1 Part identification marking.
* N.3.1.1 Card holders, guides and extractors/ejectors marking. Card holders, guides and extractors/ejectors do not require marking of parts.
* N.3.1.2 Printed circuit and printed wiring boards.
* N.3.1.2.1 Method I marking (for QPL parts).. Each production printed board, each qualification test specimen, and each set of conformance test circuit strips (as opposed to each individual test coupon) shall be marked in accordance with the master drawing. As a minimum, each production printed board, qualification test specimen, or conformance test circuit strip shall be marked with the printed board manufacturer's CAGE (Commercial and Government Entity), lot date code, and traceability code. The marking shall be produced by one of the following methods: the same process used in producing the conductive pattern; or by the use of a fungistatic ink, or paint applied to the printed board, or to a label which is applied to the printed board, or by mechanical pencil, mechanical machining, or laser machining on a metallic area provide for marking purposes. Conductive legends or marking shall be no closer to the conductive pattern of the printed board than the spacing requirements specified. All marking shall be able to withstand solder fluxes, cleaning solutions, and molten solder encountered in the manufacture of printed boards, shall remain legible after all tests, and in no manner affect printed board performance.
* N.3.1.2.2 Method II marking (for QML parts). Marking of compliant printed boards and their associated test coupons shall be in accordance with MIL-PRF-31032, the following requirements, and the identification and marking provisions of the printed board procurement documentation. The marking shall be permanent, legible, complete, and shall meet the marking adhesion requirements of the applicable specification sheets. If any additional marking is used or required by the printed board procurement documentation, it shall in no way interfere with the marking required herein, and shall be visibly separated. Only the approved QML-31032 manufacturer is authorized to apply the QML brand.
N.3.1.2.2.1 Full marking. Unless otherwise specified by the printed board procurement documentation, the following full marking shall be placed on each printed board and test coupon strip:
a. "QML" or "Q" brand.
b. Printed board Part or Identifying Number (PIN) with revision level (when applicable) or other special coding system detailed by the procurement documentation.
c. Lot date code.
d. QML manufacturer's CAGE code. e. Traceability.
N.3.1.2.2.2 Minimum marking. When the physical size of the printed board precludes the placement of the information specified in N.3.1.2.2.1, the minimum marking shall be as specified in the printed board procurement documentation. In those cases where full marking requirements are not on the printed board, the full marking shall be placed on the unit package.
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