MIL-PRF-39001 Capacitors, Fixed, Mica Dielectric, Established Reliability And Nonestablished Reliability, General Specification ForThis specification covers the general requirements for established reliability \(ER\) and nonestablished reliability \(non-ER\), mica dielectric, fixed capacitors \(see 6.1\). The ER capacitors have a failure rate level \(FRL\) ranging from 1.0 percent per 1,000 hours to 0.001 percent per 1,000 hours \(see 1.2.1.7\). The FRL is established at a 90 percent confidence level. The FRL, identified by the applicable symbol specified in table V is referred to operational life at full rated voltage \(see 1.2.1.6\) at 125 degrees C or 150 degrees C, as applicable. An acceleration factor of 25:1 has been used to relate the life test at 150 percent of rated voltage at rated temperature to rated voltage at rated temperature.

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INCH-POUND

MIL-PRF-39001E

18 February 2009

SUPERSEDING

MIL-PRF-39001D

2 March 2004

PERFORMANCE SPECIFICATION

CAPACITORS, FIXED, MICA DIELECTRIC,

ESTABLISHED RELIABILITY AND NONESTABLISHED RELIABILITY,

GENERAL SPECIFICATION FOR

This specification is approved for use by all Departments

and Agencies of the Department of Defense.

1. SCOPE

1.1 Scope. This specification covers the general requirements for established reliability (ER) and non-

established reliability (non-ER), mica dielectric, fixed capacitors (see 6.1). The ER capacitors have a failure rate

level (FRL) ranging from 1.0 percent per 1,000 hours to 0.001 percent per 1,000 hours (see 1.2.1.7). The FRL is

established at a 90 percent confidence level. The FRL, identified by the applicable symbol specified in table V is

referred to operational life at full rated voltage (see 1.2.1.6) at 125C or 150C, as applicable. An acceleration factor

of 25:1 has been used to relate the life test at 150 percent of rated voltage at rated temperature to rated voltage at

rated temperature.

1.2 Classification.

1.2.1 Part or Identifying Number (PIN). The PIN is in the following form and as specified (see 3.1).

CMR04

1R0

Style

Characteristic

Capacitance

Operating

Rated voltage

Product level

(1.2.1.1)

(1.2.1.2)

(1.2.1.3)

tolerance

temperature

designator

range

1.2.1.1 Style. The style is identified by the three-letter symbol "CMR" followed by a two-digit number; the letters

identify mica dielectric, fixed capacitors, ER and non-ER, and the number identifies the shape and dimensions of the

capacitor.

1.2.1.2 Characteristic. The characteristic is identified by a single letter which indicates the relative stability of the

capacitor with temperature change in accordance with table I.

Comments, suggestions, or questions on this document should be addressed to: US Army Communications-

Electronics RDEC, ATTN: AMSRD-CER-PR-D,, Fort Monmouth, NJ 07703-5023, or emailed to

robert.francis@us.army.mil . Since contact information can change, you may want to verify the currency of this

address information using the ASSIST Online database at https://assist.daps.dla.mil.

AMSC N/A

FSC 5910

DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.