MIL-PRF-31032 Performance and Qualification Requirements for Printed Wiring Boards (Former MIL-P-55110)

The MIL-PRF-31032 standard, developed by the U.S. Department of Defense, specifies general performance requirements for printed circuit boards or printed circuit boards and validation requirements to ensure that these items meet applicable performance requirements.

This standard replaces the previously effective MIL-P-55110 standard. The old standard specified performance and qualification requirements for rigid single-sided, double-sided and multi-layer printed wiring boards with or without coated through-holes.

The purpose of the MIL-PRF-31032 standard is to provide the printed carton manufacturer with the greatest possible flexibility to implement commercial best practices while providing product that meets military performance needs.

This standard is designed for companies that want to be a supplier to the US Department of Defense and produce such devices. For companies that want to obtain a certificate, it is determined by the authorized institutions that the requirements listed in this standard are met and that the company is sufficient and appropriate.

The MIL-PRF-31032 standard is a performance specification, ie it is designed to test printed wiring boards and certify that they meet the requirements for military use. It is not possible for a manufacturer to produce these products without a certificate.

The military is no exception in this regard. Every printed wiring board manufactured for military purposes must be manufactured by a company certified to specification.

In this standard, the requirements are organized under the following headings:

1. Printed board detail requirements

• Conflicting requirements
• Reference to printed carton procurement documents

2. Qualification
3. Design
4. Printed cardboard materials

• Prohibited materials

5. External visual and dimensional requirements

• main material
• Conductor model
• Dimensional (interface and physical size) requirements
• solder mask
• through protection

6. Microsection requirements (double-sided with plated holes only)

• main material
• Conductor model
• Coated hole finish
• metallic cracks
• Through the cover overlay

7. Performance requirements

• External visual and dimensional acceptability (of printed boards)
• Destructive physical analysis through microsection and evaluation of printed board test specimens
• Chemical requirements
• physical requirements
• electrical requirements
• environmental requirements

8. Marking

• Product identification and traceability
• Marking readability
• Workmanship

Among the numerous test, measurement, analysis and evaluation studies it provides for businesses in various sectors, our organization also provides certification services for the performance and quality requirements for printed wiring boards, within the scope of the MIL-PRF-31032 standard, with its trained and expert staff and advanced technological equipment. .