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 degrees C to +125 degrees C.

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MIL-PRF-28861D

APPENDIX A

PROCEDURE FOR QUALIFICATION INSPECTION FOR CLASS B FILTERS

A.1 SCOPE

A.1.1 Scope. This appendix details the procedure for submission of samples, with related data, for qualification

inspection of class B filters covered by this specification. The procedure for extending qualification is also outlined

herein. This appendix is a mandatory part of the specification. The information contained herein is intended for

compliance only.

A.2. APPLICABLE DOCUMENTS

A.2.1 General. The documents listed in this section are specified in sections A3 or A4 of this appendix. This

section does not include documents cited in other sections of this appendix or recommended for additional

information or as examples. While every effort has been made to ensure the completeness of this list, document

users are cautioned that they must meet all specified requirements of documents cited in sections A3 or A4 of this

appendix, whether or not they are listed.

A.2.2 Government documents.

A.2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form

a part of this appendix to the extent specified herein. Unless otherwise specified, the issues of these documents are

those cited in the solicitation or contract.

DEPARTMENT OF DEFENSE STANDARDS

MIL-STD-1276 - Leads, for Electronic Component Parts

(Copies of this document are available online at https://assist.daps.dla.mil/quicksearch or from the Standardization

Document Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.)

A.3 SUBMISSION

A.3.1 Sample. A sample consisting of 45 specimens of each filter for which qualification is sought shall be

submitted. Each sample shall be accompanied with the following information:

a. Attenuation curve in accordance with MIL-STD-220.

b. Certification as to the flashpoint of the impregnant or potting compound based on the Cleveland-cup

process (see 4.6.27).

c. Schematic diagram of the filter, including nominal values of the components.

A.3.2 Certification of material. When submitting samples for qualification, the manufacturer shall submit

certification, in duplicate, that the materials used in the filters are in accordance with the applicable specification

requirements.

A.3.3 Description of items. The manufacturer shall submit a detailed description of the filters being submitted for

tests, including the type and quantity of impregnant, material, thickness, and applied finish of case, and details of

terminal.