MIL-PRF-20 Capacitor, Fixed, Ceramic Dielectric \(Temperature Compensating\), Established Reliability And Non-Established Reliability, General Specification ForThis specification covers the general requirements for established reliability \(ER\) and non-ER, temperature compensating, fixed capacitors for use primarily where compensation is necessary for circuit applications due to temperature changes, in bypass and coupling applications. Capacitors meeting the ER requirements specified herein have a failure rate level \(FRL\) ranging from 1.0 percent per 1,000 hours to 0.00l percent per 1,000 hours. These failure rate levels are established at a 90-percent confidence level based on the life test parameters specified and are maintained at a 10-percent producer\'s risk. An acceleration factor of 8:1 has been used to relate the life test data at 200 percent of rated voltage at the applicable high test temperature to the rated voltage at the applicable high test temperature. A part per million \(ppm\) quality system is used for documenting and reporting the average outgoing quality of ER capacitors supplied to this specification. Statistical process control \(SPC\) techniques are required in the manufacturing process to minimize variation in production of ER capacitors supplied to the requirements of this specification.

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MIL-PRF-20M

3.24 Marking. Marking of capacitors shall conform to method I of MIL-STD-1285. Unless otherwise specified (see

3.1), capacitor marking shall include the PIN, 'JAN' brand (ER only), trademark or manufacturer's name, commercial

and Government entity (CAGE) code, voltage, date code, and lot symbol in the order shown (see example). The

number of lines may be more than shown in examples provided that the order is maintained.

Example of ER:

CCR75CG

PIN (see 1.2.1).

821KM

JAN TM

'JAN' brand and trademark or manufacturer's name.

12345

CAGE

200V 0215A

Voltage, date code and lot symbol.

Example of non-ER:

CC75CG

PIN (see 1.2.1).

821K

Trademark or manufacturer's name.

12345

CAGE

200V 0215A

Voltage, date code and lot symbol.

3.24.1 PIN marking. Unless otherwise specified (see 3.1), the PIN shall be divided between the characteristic and

capacitance symbols. An ER part may be marked and furnished as a non-ER part, if produced on the same

assembly line, and subjected to and meets all the inspection requirements of the ER part.

3.24.2 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 specification, shall bear the certification mark "JAN" except that items too small to

bear the certification mark "JAN" shall bear the letter "J". The "JAN" or "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 and 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 or associated specifications, 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".

3.24.3 Marking legibility (laser marking only). When tested as specified in 4.7.16, the marking shall remain legible.

3.24.4 Substitutability of product level. A manufacturer may supply to all higher product levels than to which they

are qualified. Items of an exponential product level as shown below and marked to lower product level with acquiring

agency approval, are substitutable for higher product levels, and shall not be remarked unless specified in the

contract or order (see 6.2), the lot date codes on the parts are unchanged, and the workmanship criteria is met.

Parts qualified to

Are substitutable for

product level

R, P, and M

P, and M

3.24.5 Substitution of capacitance tolerance and rated voltage. Parts qualified and marked to tighter capacitance

tolerance or higher rated voltage are substitutable, with acquiring agency approval, 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. Unless specified in the contract or order (see 6.2), the substitutable parts shall not be remarked.