presidio components ceramic capacitors since 1980
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Presidio Components San Diego Plant

Presidio's Manufacturing Certifications

Presidio Components was initially qualified to MIL-PRF-55681 in 1984. Since then we have upgraded our processing line to obtain the highest established reliability rating of “S” level. We are also qualified on two additional space level specifications, MIL-PRF-123 and MIL-PRF-49470 “T” level. And, Presidio Components is proud to be the first QPL supplier to MIL-PRF-49467, the high voltage ceramic capacitor specification. All QPL testing per MIL-STD-202 is done on site at our DLA approved test lab. For a list of environmental test capability, consult the factory.

Presidio offers a wide variety of standard and custom ceramic capacitors for applications as diverse as missile guidance systems, switch-mode power supplies, computers, telecommunications and hearing aids. All of these products are manufactured and tested to stringent quality and reliability standards.

MIL Qualifications (for all QPL Products call the factory for current information).
See links below for performance specifications.

Description Qualified Parts List


Surface mount, multilayer ceramic chip capacitors, CDR type.

MIL-PRF-55681 Presidio QPL

MIL-PRF-55681 'S' Level (2000)

Lowest failure rate designation. More than 380 million hours of Life Test Data accumulated since 1984.

MIL-PRF-55681 Presidio QPL

MIL-PRF-123 Space Level (1998)

For space, missile and other high reliability applications. Tested in accordance with MIL-PRF-123. Parts are available in a broad range of values and tolerances.

Presidio QPL

MIL-PRF-49470 'B' Level (1999)

SMPS ceramic capacitors suitable for standard Class "H" military applications.

MIL-PRF-49470B Presidio QPL

MIL-PRF-49470 'T' Level (2001)

SMPS ceramic capacitors suitable for high reliability "T" Level, Class "K" space level applications.

MIL-PRF-49470T Presidio QPL

MIL-PRF-49467 (2003)

Multilayer high voltage capacitors suitable for military and commercial high reliability applications.

MIL-PRF-49467 Presidio QPL

NASA S-311-P-829 Rev. K

Multilayer ceramic chip capacitors for space, missile and other high reliability applications.

 Call Presidio

Comparison of MIL-PRF-123 and MIL-PRF-55681 (CDR) Chips This links to a table which summarizes the differences between MIL-PRF-123 and MIL-PRF-55681 ceramic chip capacitors.

Certified MIL-STD-790 As a QPL facility we are qualified to DSCC's MIL-STD-790 Product Assurance Program. All QPL testing follows the military standards for "Electronic & Electrical Components Parts" per MIL-STD-202.

 Also as a QPL facility, we are a government qualified Environmental & Mechanical Test Lab.




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Presidio Components, Inc., has been an industry leader in the manufacture of ceramic capacitors since 1980. We provide high quality commercial capacitors, military capacitors, space capacitors, high temperature capacitors, pulse energy capacitors for EFI detonators, microwave capacitors and RF capacitors, as well as custom capacitors. Our custom products include nonstandard part sizes and voltages, including high voltage, high temperature, high "Q", custom leads, cryogenic ceramics, negative and positive temperature characteristic ceramics and piezoelectric formulations. We have a series of patented microwave and radio frequency products including patented single layer and broadband DC blocking caps. Call Presidio at (858) 578-9390.
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