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

6.4 Subject term (key word) listing.

Parts Per Million (ppm)

Statistical process control (SPC)

6.5 Tin whisker growth. The use of alloys with tin content greater than 97 percent, by mass, may exhibit tin

whisker growth problems after manufacture. Tin whiskers may occur anytime from a day to years after manufacture

and can develop under typical operating conditions, on products that use such materials. Conformal coatings

applied over top of a whisker-prone surface will not prevent the formation of tin whiskers. Alloys of 3 percent lead, by

mass, have shown to inhibit the growth of tin whiskers. For additional information on this matter, refer to ASTM

B545, Standard Specification for Electrodeposited Coating of Tin.

6.6. Environmentally preferable material. Environmentally preferable materials should be used to the maximum

extent possible to meet the requirements of this specification. As of the dating of this document, the U.S.

Environmentally Protection Agency (EPA) is focusing efforts on reducing 31 priority chemicals. The list of chemicals

available at the following EPA site: https://www.epa.gov/epaoswer/hazwaste/minimize/. Included in the EPA list of 31

priority chemicals are cadmium, lead, and mercury. Use of the materials on the list should be minimized or

eliminated unless needed to meet the requirements specified herein (see Section 3).

6.7 Changes from previous issue. The margins of this specification are marked with asterisks to indicate where

changes from the previous issue were made. This was done as a convenience only and the Government assumes

no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the

requirements of this document based on the entire content irrespective of the marginal notations and relationship to

the previous issue.