DLA - MIL-PRF-39018C
CAPACITORS, FIXED, ELECTROLYTIC (ALUMINUM OXIDE), ESTABLISHED RELIABILITY AND NON-ESTABLISHED RELIABILITY, GENERAL SPECIFICATION FOR
| Organization: | DLA |
| Publication Date: | 7 January 1991 |
| Status: | inactive |
| Page Count: | 44 |
scope:
This specification covers the general requirements for established reliability (ER) and non-ER, aluminum oxide, electrolytic, fixed capacotrs (see 6.1). Capacitors meeting the ER requirements of this specification have reliability established on the basis of life tests performed at rated voltage at 85°C for failure rate (FR) levels ranging from 1.0 percent to 0.001 percent per 1,000 hours in accordance with MIL-STD-690. These FR levels are established at a 60-percent confidence level and are maintained at a 10-percent producer's risk. The level of reliability is identified by the following FR level symbols:
Symbol FR level (%/1,000 hr) M 1.0 P 0.1 R 0.01 S 0.001
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.
Capacitors covered by this specification are classified by the style, as specified (see 3.1). Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Defense Electronics Supply Center, DESC-ECT, 1507 Wilmington Pike, Dayton, OH 45444-5000, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.
intended Use:
Aluminum oxide electrolytic capacitors are intended for use in filter and bypass applications where large capacitance values are required in small cases and where excess of capacitance over the... View More
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