INCH-POUND
MIL-PRF-28861D
4 February 2011
SUPERSEDING
MIL-PRF-28861C
30 March 2004
PERFORMANCE SPECIFICATION
FILTERS AND CAPACITORS, RADIO FREQUENCY/ELECTROMAGNETIC
INTERFERENCE SUPPRESSION, 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 low-pass filter and capacitors used to suppress
radio frequency/electromagnetic interference. Filters furnished to the requirements of this specification contain
shunting ceramic discoidal capacitors and series inductors (FSC 5915). Capacitors furnished to the requirements of
this specification contain shunting ceramic discoidal capacitors (FSC 5910). For the purposes of this specification,
feed-through capacitor types (C circuit configuration) are referred to herein as a filter. Passband power may be
alternating current (ac) or direct current (dc) and the filters used primarily in the reduction of broadband radio
frequency interference. This specification provides for two levels of product assurance requirements. Filters covered
by this specification are capable of operation over the temperature range of -55°C to +125°C.
1.2 Classification.
1.2.1 Part or Identifying Number (PIN). Filters specified herein (see 3.1) are identified by a PIN that consists of
the basic number of the specification sheet and a coded number. The PIN is coded to provide information concerning
case finish and product assurance level. The PIN is in the following format:
M28861/01-
001
T
S
Specification
Dash
Case finish
Product
number indicating
number
(1.2.1.2)
assurance level
MIL-PRF-28861/01
(1.2.1.1)
(1.2.1.3)
1.2.1.1 Dash number. The dash number is as specified in the individual specification sheet (see 3.1).
1.2.1.2 Case finish. The case finish is identified by a single letter in accordance with table I.
1.2.1.3 Product assurance level. This specification provides for two levels of reliability assurance, class B and
class S (see 3.2.1). The product assurance level is identified by a single letter in accordance with table II.
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.daps.dla.mil.
AMSC N/A
FSC 59GP
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