1、AMSC N/A FSC 59GP 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 th
2、e 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
3、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
4、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 temp
5、erature range of -55C to +125C. 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 p
6、roduct 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 (se
7、e 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 lette
8、r in accordance with table II. INCH-POUND 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 capacitorfilterdla.mil. Since contact information can change, you may want to verify t
9、he currency of this address information using the ASSIST Online database at https:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-28861D 2 1.2.2 Style. The style (see 3.1) is identified by the two letter symbol “FS“ foll
10、owed by a two digit number. The letters identify radio frequency/electromagnetic interference suppression filters and the two digits represent a voltage rating, envelope size and configuration. TABLE I. Case finish. Symbol Finish T tin-lead plated S Silver-plated G Gold-plated TABLE II. Product assu
11、rance level. Symbol Level S Class S B Class B 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 or 4 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional informat
12、ion 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 3 or 4 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Speci
13、fications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. FEDERAL STANDARDS FED-STD-H28 - Screw-Th
14、read Standards for Federal Services. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-PRF-28861/1 - Filters and Capacitors, Radio Frequency/Electromagnetic Interference Suppression, Hermetically Sealed, Styles FS10 and FS11 MIL-PRF-28861/2 - Filters, Radio Frequency/Electromagnetic Interference Suppression,
15、 Hermetically Sealed, Style FS20 MIL-PRF-28861/3 - Filters, Radio Frequency/Electromagnetic Interference Suppression, Hermetically Sealed, Style FS30 MIL-PRF-28861/4 - Filters, Radio Frequency/Electromagnetic Interference Suppression, Hermetically Sealed, Style FS40 MIL-PRF-28861/5 - Filters, Radio
16、Frequency/Electromagnetic Interference Suppression, Hermetically Sealed, Style FS50 MIL-PRF-28861/6 - Filters and Capacitors, Radio Frequency/Electromagnetic Interference Suppression, Non-hermetically Sealed, Style FS60 MIL-PRF-28861/12 - Filters and Capacitors, Radio Frequency/Electromagnetic Inter
17、ference Suppression, Hermetically Sealed On One End Only, Style FS70 MIL-PRF-31033 - Capacitors, Fixed, Ceramic Dielectric, High Reliability, Discoidal, General Specification For Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-28861D 3 DEPART
18、MENT OF DEFENSE STANDARDS MIL-STD-202 - Test Method Standard Electronic and Electrical Component Parts. MIL-STD-220 - Method of Insertion-Loss Measurement. MIL-STD-790 - Established Reliability and High Reliability Qualified Products List (QPL) Systems for Electrical, Electronic, and Fiber Optics Pa
19、rt Specifications. MIL-STD-1285 - Marking of Electrical and Electronic Parts. (Copies of these documents 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.) 2.3 Non-Government p
20、ublications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM-B16/B16M - Standard Specification for Fr
21、ee-Cutting Brass Rod, Bar, and Shapes for Use in Screw Machines ASTM-B36/B36M - Standard Specification for Brass Plate, Sheet, Strip, and Rolled Bar ASTM-B545 - Standard Specification for Electrodeposited Coatings of Tin ASTM-D92 - Standard Test Method for Flash and Fire Points by Cleveland Open Cup
22、 Tester. ASTM-E595 - Standard Test Method for Total Mass Loss and Collected Volatile Condensable Materials from Outgassing in a Vacuum Environment (Copies of these documents are available at www.astm.org or from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA, 19428-2
23、959.) TechAmerica EIA-557 - Statistical Process Control Systems. (DoD adopted) (Copies of this document are available at http:/techamerica.org/standards or TechAmerica, 1401 Wilson Boulevard, Suite 1100, Arlington, VA 22209.) NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA) NEMA-MW1000 - Magnet
24、Wire (Copies of this document may be ordered online at www.nema.org or from the National Electrical Manufacturers Association, 1300 North 17thStreet, Suite 1752, Rosslyn, VA 22209.) IPC, ASSOCIATION CONNECTING ELECTRONICS INDUSTRIES J-STD-006 - Requirements for Electronic Grade Solder Alloys and Flu
25、xed and Non-Fluxed Solid Solders for Electronic Soldering Applications. (Applications for copies should be addressed to IPC, Association Connecting Electronics Industries, 3000 Lakeside Drive, 309S, Bannockburn, IL 60015 or at www.ipc.org.) Provided by IHSNot for ResaleNo reproduction or networking
26、permitted without license from IHS-,-,-MIL-PRF-28861D 4 SOCIETY OF AUTOMOTIVE ENGINEERS (SAE) SAE AMS2418 - Plating, Copper (Copies of this document may be ordered online at www.sae.org or from the Society of Automotive Engineers, 400 Commonwealth Drive, Warrendale, PA 15096-0001.) (Non-Government s
27、tandards and other publications are normally available from the organizations that prepare or distribute the documents. These documents also may be available in or through libraries or other informational services.) 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the ev
28、ent of a conflict between the text of this document and the references cited herein (except for related specification sheets) the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. RE
29、QUIREMENTS 3.1 Specification sheets. The individual part requirements shall be as specified herein and in accordance with the applicable specification sheets. In the event of any conflict between requirements of this specification and the specification sheets, the latter shall govern. 3.2 Qualificat
30、ion. Filters furnished under this specification shall be products which are authorized by the qualifying activity for listing on the applicable qualified products list (QPL) before contract award. In addition, the manufacturer shall obtain certification from the qualifying activity that the QPL syst
31、em requirements of 3.3 and 4.2 have been met and are being maintained. Authorized distributors that are approved to MIL-STD-790 distributor requirements by the QPL manufacturers are listed in the QPL. 3.2.1 Product assurance requirements. Two levels of filter reliability assurance are provided for i
32、n this specification. Classes S and B filters shall be those which have been subjected to and passed all applicable requirements, tests, and inspections detailed herein, including qualification and conformance inspection requirements for the specified class. Class S is the highest product assurance
33、level of this specification and is intended for space applications. 3.3 QPL system. The manufacturer shall establish and maintain a QPL system for parts covered by this specification. Requirements for this system are specified in MIL-STD-790 and 4.2. In addition, the manufacturer shall establish a S
34、tatistical Process Control (SPC) system that meets the requirements of 3.3.1 3.3.1 Statistical process control (SPC). As part of the overall MIL-STD-790 QPL system, the manufacturer shall establish a SPC system that meets the requirements of EIA-557. Processes for application of SPC techniques shoul
35、d include the following: a. Discoidal capacitors. b. Incoming inspection. c. Solder processing. d. Assembly. e. Finishing. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-28861D 5 3.4 Materials. The materials shall be as specified herein. How
36、ever, when a definite material is not specified, a material shall be used which will enable the filters to meet the performance requirements of this specification. Acceptance or approval of any constituent material shall not be construed as a guaranty of the acceptance of the finished product. 3.4.1
37、 Impregnating and potting compounds. Compounds used in the impregnating and potting of filters shall be chemically inactive with respect to the filter unit and case (see 3.5.2). The compound either in the state of original application or as a result of having aged, shall have no adverse effect on th
38、e performance of the filter. The use of wax is prohibited. 3.4.2 Outgassing (applicable to nonhermetically sealed class S filters only) (see 6.7). When tested as specified in 4.6.28, the polymeric sample shall meet the following requirements: Total mass loss (TML) - - - - - - - - - - - - - - - - - S
39、hall not exceed 1.0 percent Volatile condensable material (VCM) - - - - - - -Shall not exceed 0.1 percent 3.4.3 Pure tin prohibition. The use of pure tin, as an underplate or final finish, is prohibited both internally and externally. Tin content of filter components, associated mounting hardware, a
40、nd solder shall not exceed 97 percent, by mass. Tin shall be alloyed with a minimum of 3 percent lead, by mass (see 6.5.1 and 6.5.5). Lead-free, tin alloy high temperature solders may be used where high temperature solder is required herein with approval by the qualifying activity. The tin content o
41、f lead-free high temperature solders, shall not exceed 97 percent by mass. 3.5 Interface and physical dimensions. Filters shall meet the interface and physical dimensions specified (see 3.1). 3.5.1 Performance. Filter performance shall be such that none of the components of the filter are over-stres
42、sed during operation as electrically and mechanically specified herein. Unless allowed for herein, no degradation shall occur during any 100-percent screens specified herein. The filter shall meet the specified electrical characteristics at all operating temperatures, voltages, currents, or any comb
43、inations thereof as specified herein. Unless otherwise specified, the insertion loss requirements between any two adjacent specified frequencies shall be that of the lower of the two frequencies. 3.5.2 Case. Filters shall be enclosed in a suitable case in order to pass the performance requirements o
44、f this specification. The case shall be hermetically sealed or non-hermetically sealed as specified (see 3.1 and 6.4.2). The case shall protect the filter components from damage under all test conditions specified and prevent leakage of impregnant or filling compound. All metallic surfaces shall be
45、free from insulating protective finishes except as specified. 3.5.3 Finish. All exposed metallic surfaces shall be suitably protected against corrosion by plating, solder coating, or other means. The finish shall: a. Provide good electrical contact when used as a terminal or conductor. b. Have unifo
46、rm texture and appearance. c. Be adherent. d. Be free from blisters, pinholes, and other defects that may affect the protective value of the coating. 3.5.3.1 Tin-lead plated. T code case finish filters (see 1.2.1.2 and 3.1) shall be, tin-lead plated (the minimum lead content shall be 3 percent), or
47、hot-solder dipped. Use of pure tin plating is prohibited. For guidance on tin-lead finish, see 6.5.1 and 6.5.2. 3.5.3.2 Silver-plated. S code case finish filters (see 1.2.1.2 and 3.1) shall be silver-plated. For guidance on silver finishes see 6.5.3. 3.5.3.3 Gold-plated. G code case finish filters (
48、see 1.2.1.2 and 3.1) shall be gold plated. For guidance on gold finishes see 6.5.4. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-28861D 6 3.5.4 Solder dip (retinning) leads. The manufacturer (or authorized category B or C distributor) may
49、solder dip/retin the leads of product supplied to this specification provided the solder dip/retin process has been approved by the qualifying activity (see appendix A). 3.5.5 Threaded parts. Unless otherwise specified (see 3.1), all threaded parts shall be in accordance with FED-STD-H28. 3.5.6 Inductive elements. Unless otherwise specified, the wire used when winding inductors shall have a minimum diameter of .004 inch (0.10 mm) and
