MIL-PRF-55110 Updated – Printed Wiring Boards

MIL-PRF-55110 has been updated.  The specification is titled Printed Wiring Board, Rigid, General Specification for.  The new Edition is Revision H with Amendments 1 and 2.  Compliance with this new edition must be completed by September 18, 2017.

The MIL-PRF-55110 was previously numbered MIL-P-55110 and is one of the major PWB (Printed Wiring Board) specifications for government contract work.  It was inactivated in December 1997 and should only be used for replacement purposes.  New design should meet the requirements of MIL-PRF-31032 (Printed Circuit Board/Printed Wiring Board, General Specification for), Revision C from 2016.

MIL-PRF-55110 provides you with the performance and qualification requirements for rigid single-sided, double-sided and multilayered printed wiring boards.  These boards can include both plated and non-plated through holes.  Four types of PWB’s are included in the document — that is, the single-sided, double-sided, multilayer with plated holes, and multilayer with plated and blind or buried via holes.

Changes in this new edition are clearly marked with black lines in the outside margin of the document.  You’ll find them on the following pages:

1, 7, 15, 17, 24, 28, 29, 30, 31, 32, 33, 36, 38, 40, 42, 47, 48, 51, 56, and 78.

If you’re familiar with this 134-page document, you’ll soon realize that the bulk of the new updates occur in Appendix A.

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Claudia Bach

Claudia Bach is the President of Document Center Inc. and a world-wide recognized expert on Standards and Standards Distribution. You can connect with her on Google+

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