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

4.7.19 Moisture resistance (see 3.23). Following resistance to soldering heat, capacitors shall be tested in

accordance with method 106 of MIL-STD-202. The following details and exceptions shall apply:

Mounting: Capacitors shall be mounted by their terminals in a manner that will keep the capacitor body

from touching the test fixture.

Initial measurements: Not applicable.

Number of cycles: 20 continuous cycles with step 7a applying for the first 10 cycles only. Step 7b is not

applicable.

Polarization voltage: For the first ten cycles, a dc potential of 90 volts to 100 volts shall be applied across

the capacitor terminals. Once each day, a check shall be made to determine whether a capacitor has

shorted.

Final measurements: After the final cycle and between one hour and four hours after removal from the

chamber, insulation resistance shall be measured at room ambient conditions as specified in 4.7.4.

Artificial drying shall not be permitted. Between 4 hours and 24 hours after this measurement, capacitors

shall be visually examined for evidence of corrosion or mechanical damage; capacitance, and dissipation

factor shall then be measured as specified in 4.7.5 and 4.7.6, respectively.

4.7.20 Life (see 3.24).

4.7.20.1 2,000 hour (qualification inspection) (see 3.24.1). Capacitors shall be tested in accordance with method

108 of MIL-STD-202. The following details and exceptions shall apply:

Distance of temperature measurements from specimens, in inches: Not applicable.

Test temperature and tolerance: +125�C +4�C, -0�C.

Operating conditions: A minimum of dc rated voltage -2 percent of dc rated voltage shall be applied to the

capacitors being tested under rated conditions; a minimum of 150 percent -2 percent of the dc rated voltage

shall be applied to the capacitors being tested under accelerated conditions. The maximum surge current

shall be not more than 50 mA. A current-limiting resistor shall be inserted into the circuit.

Test condition letter: F (2,000 hours +72 hours, -0 hours).

Measurements after exposure: At the conclusion of this test, the insulation resistance, capacitance, and

dissipation factor shall be measured as specified in 4.7.4, 4.7.5, and 4.7.6, respectively.

Examination after test: Capacitors shall be visually examined for evidence of corrosion or mechanical

damage.

4.7.20.2 6,000 hour (group C inspection) (see 3.24.2). Except as specified in the following, capacitors shall be

tested as specified in 4.7.20.1:

Test duration: 6,000 hours +96 hours, -0 hours at accelerated condition only.

Measurements during and after exposure: Insulation resistance, capacitance, and dissipation factor shall

be measured as specified in 4.7.4, 4.7.5, and 4.7.6, respectively, after 2,000 hours +72 hours, -0 hours and

every 2,000 hours +96 hours, -0 hours thereafter until a total of 6,000 hours +96 hours, -0 hours have

elapsed.