INCH-POUND
MIL-PRF-87164A
24 May 1999
SUPERSEDING
MIL-C-87164 (USAF)
22 November 1982
PERFORMANCE SPECIFICATION
CAPACITORS, FIXED, MICA DIELECTRIC, HIGH 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 high reliability, mica dielectric, fixed capacitors
for space, missile, and other high reliability applications. Capacitors covered by this specification may be used in
critical applications where the utmost in stability and dependability is required and where variations in capacitance
with respect to temperature, voltage, frequency, and life cannot be tolerated (see 6.1). An acceleration factor of 25:1
has been used to relate life test data obtained 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 capacitors specified herein (see 3.1) are identified by a PIN which
consists of the basic number of the specification sheet followed by a series of coded characters. Each specification
sheet covers a different capacitor style. The coded number provides information concerning the capacitor's
characteristic, working voltage, capacitance value, and capacitance tolerance. The PIN is in the following format::
M87164
A
01
C
D
1R0
D
Performance
Modification
Slash sheet
Characteristic
Voltage
Capacitance
Capacitance
specification
(see 1.2.1.1)
number
(see 1.2.1.2)
(see
value
tolerance
number
1.2.1.3)
(see 1.2.1.4)
(see 1.2.1.5)
1.2.1.1 Modification. The modification letter is used to indicate the latest characteristic of the part in the
specification sheet. This letter is changed under direction of the preparing activity.
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.
TABLE I. Characteristic.
Symbol
Temperature coefficient
Capacitance drift
(Parts/million/°C (ppm/°C))
±(0.5 percent +0.1 pF)
-200 to +200
C
±(0.1 percent +0.1 pF)
-20 to +100
E
±(0.05 percent +0.1 pF)
0 to +70
F
Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in
improving this document should be addressed to: Defense Supply Center, Columbus, ATTN: DSCC/VAM, 3990
East Broad Street, Columbus, OH 43213-1199, by using the Standardization Document Improvement Proposal
(DD Form 1426) appearing at the end of this document or by letter.
AMSC N/A
FSC 5910
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