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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
FIGURE 2. Bend test.
4.7.13 Barometric pressure (see 3.17). Capacitors shall be tested in accordance with method 105 of
MIL-STD-202. The following details shall apply:
a.
Method of mounting: Not applicable.
b.
Test condition letter: D (100,000 feet).
c.
Tests during subjection to reduced pressure: a minimum of 150 percent - 2 percent of rated voltage shall
be applied between the terminals for not less than 1 second nor more than 5 seconds.
After the test, capacitors shall be examined for evidence of damage, arcing, and breakdown.
4.7.14 Temperature coefficient and capacitance drift (see 3.18). Capacitance shall be measured as specified in
4.7.5, except that measurements shall be made in the order and at the temperature shown in the following, at a
frequency of 100 kHz ±10 kHz. The reference frequency at which measurements are made shall not drift more than
±50 Hz during the test. An accuracy of ±0.025 percent of nominal capacitance +0.05 pF shall be maintained for
measurement of capacitance change.
a.
For qualification inspection: +25°C, ±2°C; -55°C +0°C, -2°C; -10°C ±2°C; +25°C ±2°C; +65°C ±2°C; +85°C
+2°C, -0°C; +125°C +2°C, -0°C; and +25°C ±2°C.
b.
For quality conformance inspection: +25°C, ±2°C; -55°C +0°C, -2°C; +25°C ±2°C; +125°C +2°C, -0°C; and
+25°C ±2°C, respectively.
The measurement at each temperature shall be recorded when two successive readings taken at 5-minute intervals
at that temperature indicate no change in capacitance. The temperatures at the time of measurement shall be
measured at an accuracy of ±1.0 percent of the temperature difference between the nominal test temperature and
the nominal reference temperature +0.5 °C.
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