MIL-PRF-83421 Capacitors, Fixed, Metallized, Plastic Film Dielectric, \(Dc, Ac, Or Dc And Ac\), Hermetically Sealed In Metal Cases Or Ceramic Cases, Established Reliability, General Specification ForThis specification covers the general requirements for established reliability \(ER\), metallized plastic film dielectric, fixed capacitors, hermetically sealed in metal or ceramic cases. Capacitors covered by this specification have failure rate levels \(FRL\) established in accordance with MIL-STD-690. The reliability for each level is identified by a symbol in accordance with table I. These FRLs are established at a 90 percent confidence level and maintained at a 10 percent producer\'s risk and, unless otherwise specified \(see 3.1\), are based on life tests performed at maximum rated voltage at maximum rated temperature. Unless otherwise specified \(see 3.1\), an acceleration factor of 5:1 has been used to relate life-test data obtained at 140 percent of rated voltage at maximum rated temperature, to rated voltage at maximum rated temperature \(see 6.1\). 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 the manufacturing process to minimize variation in production of capacitors supplied to the requirements of this specification.

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MIL-PRF-83421E

1.2.1.2 Failure rate level (FRL). The FRL is identified by a single letter as shown in table I.

TABLE I. FRL.

Symbol

FRL (percent per 1,000 hours)

1.0

0.1

0.01

0.001

2. APPLICABLE DOCUMENTS

2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This

section does not include documents cited in other sections of this specification or recommended for additional

information or as examples. While every effort has been made to ensure the completeness of this list, document

users are cautioned that they must meet all specified requirements documents cited in sections 3 and 4 of this

specification, whether or not they are listed.

2.2 Government documents.

2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a

part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are

those cited in the solicitation or contract.

DEPARTMENT OF DEFENSE SPECIFICATIONS

Capacitors, Fixed, Metallized Plastic Film, Dielectric, DC and AC, Hermetically

Sealed in Metal Cases, Established Reliability, Styles CRH01, CRH02, CRH03,

CRH04, CRH05, CRH06, CRH07, CRH08, CRH09, and CRH00.

Capacitors, Fixed, Metallized Plastic Film, Dielectric, (DC, AC, or DC and AC),

Hermetically Sealed in Metal Cases, Established Reliability, Styles CRH11, CRH12,

and CRH13 (Insulated).

Capacitors, Fixed, Metallized Plastic Film Dielectric, DC and AC, Hermetically

Sealed in Metal Cases, Established Reliability, Styles CRH31, CRH32, CRH33,

CRH34, and CRH35.

DEPARTMENT OF DEFENSE STANDARDS

Test Methods Standard Electronic and Electrical Component Parts.

Failure Rate Sampling Plans and Procedures.

Standard Practice for Established Reliability and High Reliability Qualified Products

List (QPL) Systems for Electrical, Electronic, and Fiber Optic Parts Specifications.

Environmental Engineering Considerations and Laboratory Tests.

Marking of Electrical and Electronic Parts.

(Copies of these documents are available online at https://assist.daps.dla.mil/quicksearch/ or from the

Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.)

2.3 Non-Government publications. The following documents form a part of this document to the extent specified

herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract.