MIL-PRF-23269 Capacitors, Fixed, Glass Dielectric, Established Reliability, General Specification ForThis specification covers the general requirements for established reliability, glass dielectric, fixed capacitors. Capacitors covered by this specification have failure rate levels \(FRL\) established in accordance with MIL-STD-690. These FRL are established at a 90 percent confidence level and maintained at a 10 percent producer\'s risk and are based on life tests performed with rated voltage applied at 125 Deg. C. An acceleration factor of 5:1 has been used to relate life test data obtained at 150 percent of rated voltage at 125 Deg. C to rated voltage at 125 Deg. C. A part per million \(ppm\) quality system is used for documenting and reporting the average outgoing quality of capacitors supplied to this specification. Statistical process control \(SPC\) techniques are required in manufacturing process to minimize variation in production of ER capacitors supplied to the requirements of this specification.

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MIL-PRF-23269G

APPENDIX A

PROCEDURE FOR QUALIFICATION INSPECTION

A.1. SCOPE

A.1.1 Scope. This appendix details the procedure for submission of samples for qualification inspection of

capacitors covered by this specification. This appendix is a mandatory part of the specification. The information

contained herein is intended for compliance.

A.2. APPLICABLE DOCUMENTS. This section is not applicable to this appendix.

A.3. SUBMISSION

A.3.1 Sample.

A.3.1.1 Single-type submission. A sample consisting of 115 sample units of each type for which qualification is

sought shall be submitted (see A.3.1.2).

A.3.1.2 Combined submission. A sample consisting of 115 sample units of the highest capacitance value shall be

submitted for each style for which qualification is sought. For those styles containing two dc voltage ratings, an

equal number of sample units (58 each) shall be submitted representing the largest capacitance value for each dc

voltage rating contained therein; for styles containing three dc voltage ratings, an equal number of sample units (58)

shall be submitted representing the largest capacitance value for the two highest voltage ratings; the lowest voltage

rating shall be represented by 115 sample units.

A.4. EXTENT OF QUALIFICATION

A.4.1 Single-type submission. Qualification within a style and dc voltage rating will be restricted to capacitance

values equal to, or less than, those submitted. Qualification of the �5 percent or closer capacitance tolerance

automatically qualifies all other applicable capacitance tolerances.

A.4.2 Combined submission. Qualification of voltage ratings will be restricted to those submitted. Capacitance

range and tolerances will be as specified in A.4.1.

A.5 SOLDER DIP (RETINNING) LEADS

A.5.1 Solder dip/retinning operations. Only the manufacturer (or his category B distributor) may solder dip/retin as

follows.

As a corrective action if the lot fails the group A solderability test.

After the group A screening test. Following any solder dip or retinning process, the seal, insulation

resistance, capacitance, and dissipation factor measurements shall be performed on 100 percent of the lot.

The defective allowable (PDA) shall be the same as the group A, subgroup 1. Following these tests, the

manufacturer shall submit the lot to the group A solderability test.

A.5.2 Qualifying activity approval. Approval of the solder dip process will be based on one of the following

options:

When the original lead finish qualified was hot solder dip lead finish 52 in accordance with MIL-STD-1276,

the manufacturer shall use the same solder dip process for retinning as is used in the original manufacture

of the capacitor. (NOTE: The 200 microinches maximum thickness requirement is not applicable.)

When the lead finish originally qualified was not hot solder dip lead finish 52 of MIL-STD-1276 as

prescribed in A.5.2a, approval for the process to be used for solder dip shall be based on the following

procedure: