INCH-POUND
MIL-PRF-14409J
29 August 2014
SUPERSEDING
MIL-PRF-14409H
7 April 2008
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 Part or Identifying Number (PIN). Capacitors specified herein are identified by a PIN. The term "Part or
Identifying Number (PIN)" is equivalent to the term "type designation" that was previously used in this specification.
PC51
H
380
Style
Characteristic
Capacitance
(1.2.1.1)
(1.2.1.2)
(1.2.1.3)
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.
Comments, suggestions, or questions on this document should be addressed to: DLA Land and Maritime,
ATTN: 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 https://assist.dla.mil.
AMSC N/A
FSC 5910
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business