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

4.7.9 Shock, specified pulse (see 3.13). Capacitors shall be tested in accordance with method 213 of

MIL-STD-202. The following details shall apply:

Mounting: Capacitors shall be rigidly mounted by the body to the test apparatus in such a manner that the

mounting method does not damage the capacitors.

Test condition letter: I (100 g's).

Measurements during shock: During shock, an electrical measurement shall be made to determine

intermittent contacts or open-circuiting or short-circuiting. The accuracy of the detecting equipment shall be

sufficient to detect any interruption of 0.5 ms or greater duration.

After the test, capacitors shall be examined for evidence of arcing and mechanical damage.

4.7.10 Vibration, high frequency (see 3.14). Capacitors shall be tested in accordance with method 204 of

MIL-STD-202. The following details shall apply:

Mounting: Capacitors shall be rigidly mounted by the body to the test apparatus in such a manner that the

mounting method does not damage the capacitors.

Test condition letter: D (20 g's).

Measurements during shock: During the last cycle in each direction, an electrical measurement shall be

made to determine intermittent contacts or open-circuiting or short-circuiting. The accuracy of the detecting

equipment shall be sufficient to detect any interruption of 0.5 ms or greater duration.

After the test, capacitors shall be visually examined for evidence of arcing and mechanical damage.

4.7.11 Solderability (see 3.15). Capacitors shall be tested in accordance with method 208 of MIL-STD-202. The

following details shall apply:

Number of terminations of each capacitor to be tested: Two.

Depth of immersion in flux and solder: Both terminals shall be immersed to within .05 inch of the capacitor

body.

4.7.12 Terminals strength (see 3.16). The number of sample units shall be divided into two equal groups; a

different group shall be used for each of the following tests:

Pull test: Capacitors shall be tested in accordance with method 211 of MIL-STD-202. The following detail

and exception apply:

(1)

Test condition letter A.

(2)

Applied force: Four and one-half pounds.

Bend test: A 1-pound weight shall be hung from each terminal in turn at a point .750 inch (19.05 mm) from

its point of egress from the capacitor body, and the body shall be rotated about an axis which is

perpendicular to the axis of the terminals and parallel to the largest face, through 90 degrees, back through

180 degrees, and then return to its original position (see figure 2).

After the test, capacitors shall be visually examined for evidence of loosening or rupturing of the terminals, or

damage to the terminals or seal.