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

3.24.2 6,000 hour (group C inspection) and extended life (see 4.7.20.2 and 4.7.20.3).

Insulation resistance:

Shall be not less than 10,000 megohms.

Capacitance:

Shall change not more than �2.0 percent of nominal value or 0.5 pF, whichever is

greater, from the initial value obtained when measured as specified in 4.7.5. For FRL

calculation, the �2.0 percent criteria shall govern from 2,000 hours to 30,000 hours.

Dissipation factor:

Shall not exceed 1.0 percent.

Visual examination:

There shall be no evidence of mechanical damage.

3.25 Marking. Capacitors shall be permanently marked with the Part or Identifying Number (PIN), "JAN" marking,

date code, lot symbol, and manufacturer's source code in accordance with MIL-STD-1285 (see 3.1). Paper labels

shall not be used. Each capacitor shall be legibly marked using smear-resistance ink which will withstand the

environmental conditions specified herein. Marking shall remain legible after all tests. Manufacturing records shall

include these same date codes and lot symbols. The date code, lot symbol, source code, capacitance, capacitance

tolerance, and rated voltage shall be marked on the unit package. The nominal capacitance value, expressed in pF,

is identified by a three-digit number; the first two digits represent significant figures and the last digit specifies the

number of zeros to follow. When fractional values of a pF or values of less than 10 pF are required, the letter "R"

shall be used to indicate the decimal point and the succeeding digits or the group shall represent significant figures.

Example: 1R5 indicates 1.5 pF.

3.25.1 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 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".

3.25.2 Substitution of FRL. A manufacturer may supply to all higher FRL than to which they are qualified. Items

of an exponential FRL as shown in table II and marked to lower FRL, with acquiring agency approval, are

substitutable for higher FRL, 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.

TABLE II. FRL substitutability.

Parts qualified

Are substitutable for

to FRL

FRL

M, P, and R

M and P

3.25.3 Substitutability of capacitance tolerance and rated voltages. 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 order (see 6.2).

In the event the capacitance tolerance or voltage rating is remarked, the lot date codes on the parts shall not be

changed and the workmanship criteria shall be met.