AMSC N/A FSC 5910
MIL-PRF-14409F
27 July 2005
SUPERSEDING
MIL-PRF-14409E
8 January 2002
PERFORMANCE SPECIFICATION
CAPACITORS, VARIABLE (PISTON TYPE, TUBULAR TRIMMER)
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 tubular-trimmer, piston-type, variable
capacitors intended primarily for use in high-frequency trimming applications where relatively few adjustments are
required during the effective life of the equipment.
1.2 Classification
.
1.2.1 Type designation
. The type designation should be in the following form, and as specified (see 3.1 and
6.1):
1.2.1.1 Style. The style is identified by the two-letter symbol "PC" followed by a two-digit number; the letters
identify tubular-trimmer, piston-type, variable capacitors, and the number identifies the shape or differentiating
electrical characteristics of the capacitor.
1.2.1.2 Characteristic. The characteristic is identified by a single letter in accordance with table I.
1.2.1.3 Capacitance. The nominal maximum rated capacitance value expressed in picofarads (pF) is identified
by a three-digit number; the first two digits represent significant figures and the last digit specifies the number of
zeros to follow. When fractional values are required, the letter "R" should be used to indicate the decimal point. For
example: 8R5 indicates 8.5 pF.
INCH-POUND
PC51 H 380
Style
(1.2.1.1)
Characteristic
(1.2.1.2)
Capacitance
(1.2.1.3)
Comments, suggestions, or questions on this document should be addressed to: Defense Supply Center,
Columbus, DSCC-VAT, Post Office Box 3990, Columbus, OH 43218-3990 or e-mailed to
capacitorfilter@dla.mil
. Since contact information can change, you may want to verify the currency of this
address information using the ASSIST Online database at http://assist.daps.dla.mil
.
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