NPFC - MIL-PRF-38534
HYBRID MICROCIRCUITS, GENERAL SPECIFICATION FOR
|Publication Date:||23 August 1995|
This specification establishes the general performance requirements for hybrid microcircuits, Multi-Chip Modules (MCM) and similar devices and the verification requirements for insuring that these devices meet the applicable performance requirements. Verification is accomplished through the use of one of two quality programs (Appendix A or Appendix B). The main body of this specification describes the performance requirements and the requirements for obtaining a Qualified Manufacturers List (QML) listing. The appendices of this specification are intended for guidance to aid a manufacturer in developing their verification program. Detail requirements, specific characteristics, and other provisions which are sensitive to the particular intended use shall be specified in the applicable device acquisition specification.
The intent of this specification is to allow the device manufacturer the flexibility to implement best commercial practices to the maximum extent possible while still providing product which meets the military performance needs. Devices that are compliant to this specification are those that are capable of meeting the verification requirements outlined herein; and are built on a manufacturing line which is controlled by the manufacturer's quality management program and has been certified and qualified in accordance with the requirements herein. The certification and qualification requirements outlined herein are the requirements to be met by a manufacturer to be listed on the Qualified Manufacturers List (QML). The manufacturer may modify, substitute or delete the tests and inspections defined herein. This is accomplished by baselining a flow of tests and inspections that will assure that the devices are capable of meeting the generic verifications provided in this specification. This does not necessarily mean that compliant devices have been subjected to the generic performance verifications provided in this specification, just that compliant devices are capable of meeting them. It is the manufacturer's responsibility to insure that their devices are capable of meeting the generic performance verifications applicable to each specified product assurance level.
Appendices A and B define two quality management program that may be implemented by the manufacturer. Manufacturers who were certified under Options 1 or 2 of MIL-H-38534B have already implemented the Appendix A quality management program. Appendix B is a quality management approach utilizing a quality review board concept, hereafter referred to as the Technology Review Board (TRB) in this document, to modify the generic verification, design and construction criteria provided in this specification. This appendix is similar to MIL-H-38534B Option 4. Appendix C defines generic performance verifications. These verifications consist of a series of tests and inspections which may be used to verify the performance of devices. They may be used as is or modified as allowed by this specification. Manufacturers already certified under MIL-H-38534B have implemented the Appendix C verifications. Appendix D is to be used as a guide when characterization is necessary for new technologies and for standard technology qualification. This appendix may also be used as a guide in developing a test plan for new or existing products based on the tests and inspection of appendix C. Appendix E defines generic design and construction criteria relative to this technology, including rework limitations and major change testing guidance. Appendix F provides statistical sampling, and basic test and inspection procedures. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Defense Electronics Supply Center (DESC-ELD), Dayton, OH 45440, by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.
Two quality levels are provided for in this specification. These classes are K and H, as defined below.
Class K is the highest reliability level provided for in this specification. It is intended for space applications.
Class H is the standard minimum military quality level.