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

3.31.1 JAN and J marking. The United States Government has adopted and is exercising legitimate control over

the certification marks "JAN" and "J", respectively, to indicate that items so marked or identified are manufactured to,

and meet all the requirements of specifications. Accordingly, items acquired to, and meeting all of the criteria

specified herein and in applicable specifications shall bear the certification mark "JAN" except that items too small to

bear the certification mark "JAN" shall bear the letter "J". The "JAN" and "J" shall be placed immediately before the

part number except that if such location would place a hardship on the manufacturer in connection with such marking,

the "JAN" or "J" may be located on the first line above or below the part number. Items furnished under contracts or

orders which either permit or require deviation from the conditions or requirements specified herein on in applicable

specifications shall not bear "JAN" or "J". In the event an item fails to meet the requirements of this specification and

the applicable specification sheets, the manufacturer shall remove completely the military part number and the "JAN"

or the "J" from the sample tested and also from all items represented by the sample. The "JAN" or "J" certification

mark shall not be used on products acquired to contractor drawings or specifications. The United States Government

has obtained Certificate of Registration Number 504,860 for the certification mark "JAN" and Registration Number

1,586,261 for the certification mark "J".

3.31.2 Supplying to higher failure rate levels. A manufacturer may supply to all higher failure rate levels than to

which he is qualified. Parts qualified and marked to lower failure rate levels, with acquiring agency approval, are

substitutable for higher failure rate levels, and shall not be remarked unless specified in the contract or acquisition

document (see 6.2).

3.31.3 Supplying to looser capacitance tolerance and lower rated voltage. Parts qualified and marked to tighter

capacitance tolerance or higher rated voltage, with acquiring agency approval, are substitutable for parts marked to

looser capacitance tolerance or lower rated voltage, provided all other values, such as case size, characteristic, and

leads are the same. The substitutable parts shall not be remarked unless specified in the contract or acquisition

document (see 6.2).

3.32 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally

preferable materials should be used to the maximum extent possible provided that the material meets or exceeds the

operational and maintenance requirements, and promotes economically advantageous life cycle costs.

3.33 Workmanship. Capacitors shall be processed in such a manner as to be uniform in quality when using a

magnification between 5X and 7X. External leads shall not exhibit cold solder, pits, cuts, nicks, or scrapes exceeding

10% of the length of the leads. Separation of the solder between the lead and the eyelet seal due to lead forming is

not rejectable. These capacitors are not required to be solderable within .125 inch of the eyelet, seal or case.

4. VERIFICATION

4.1 Classification of inspection. The inspection requirements specified herein are classified as follows:

a. Qualification inspection (see 4.4).

b. Verification of qualification (see 4.5).

c. Conformance inspection (see 4.6).

4.2 QPL system. The manufacturer shall establish and maintain a QPL system in accordance with 3.3. Evidence

of such compliance is a prerequisite for qualification and retention of qualification.

4.3 Inspection conditions. Unless otherwise specified, all inspections shall be performed in accordance with the

test conditions specified in the "GENERAL REQUIREMENTS" of MIL-STD-202, except relative humidity shall not

exceed 75 percent. Unless otherwise specified (see 3.1), accuracy of all test voltage measurements shall be within

�2.0 percent of the specified voltage.