1、AMSC N/A FSC 5985 MIL-DTL-23971D 7 May 2012 SUPERSEDING MIL-DTL-23971C 20 August 2001 DETAIL SPECIFICATION POWER DIVIDERS, POWER COMBINERS, AND POWER DIVIDER/COMBINERS, GENERAL SPECIFICATION FOR This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. S
2、COPE 1.1 Scope. This specification covers the general requirements for power dividers, power combiners, and power divider/combiners. Specific requirements tailored for “space flight application” components are included to represent the highest reliability components specified herein. Such components
3、 are intended for use in NASA manned, satellite, interplanetary or launch vehicle programs. 1.2 Part or Identifying number (PIN). The military PIN consists of the letter “M“, the basic number of the specification sheet and an assigned dash number (see 3.1). 23791/1- 01 T Military designator and Dash
4、 Space flight specification sheet number number application 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specification or recommended for addi
5、tional 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 3 and 4 of this specification, whether or not they are listed. 2.2 Government docume
6、nts. 2.2.1 Specifications, 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. Comments, suggestions or
7、 questions on this document should be addressed to DLA Land and Maritime, ATTN: VAT, Post Office Box 3990, Columbus, OH 43218-3990, or emailed to Tubesampsdla.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database a
8、t https:/assist.daps.dla.mil. INCH-POUND Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-23971D 2 FEDERAL STANDARDS FED-STD-H28 - Screw Thread Standards for Federal Services. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-DTL-85 - Waveguides, Rigid
9、, Rectangular, General Specification for. MIL-DTL-3922 - Flanges, Waveguide, General Purpose, General Specification for. MIL-DTL-5541 - Chemical Conversion Coatings on Aluminum and Aluminum Alloys. MIL-A-8625 - Anodic Coatings, for Aluminum and Aluminum Alloys. MIL-DTL-14072 - Finishes for Ground Ba
10、sed Electronic Equipment. MIL-DTL-45204 - Gold Plating, Electrodeposited. MIL-PRF-22750 - Coating, Epoxy, High Solids. MIL-PRF-23586 - Sealing Compound (With Accelerator) , Silicone Rubber, Electrical. MIL-H-28719 - Header, Hermetically Sealed. MIL-PRF-39012 - Connectors, Coaxial, Radio Frequency, G
11、eneral Specification for. (See supplement 1 for list of associated specification sheets). DEPARTMENT OF DEFENSE STANDARDS MIL-STD-202 - Test Methods for Electronic and Electrical Component Parts. MIL-STD-461 - Requirements for the Control of Electromagnetic Interference Characteristics of Subsystems
12、 and Equipment. MIL-STD-810 - Environmental Engineering Considerations and Laboratory Tests. MIL-STD-889 - Dissimilar Metals. MIL-STD-1285 - Marking of Electrical and Electronic Parts. DEPARTMENT OF DEFENSE HANDBOOKS MIL-HDBK-454 - General Guidelines for Electronic Equipment. (Copies of these docume
13、nts are available online at https:/assist.daps.dla.mil or from Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise sp
14、ecified, the issues of these documents are cited in the solicitation or contract (see 6.2). AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) INTERNATIONAL ASTM-A240/A240M - Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications. ASTM-A
15、484/A484M - Steel, Bars, Billets and Forgings, Stainless. ASTM-A582/A582M - Bars, Free-Machining Stainless Steel. ASTM-A666 - Steel, Sheet, Strip, Plate, and Flat Bar, Austenitic Stainless, Annealed or Cold-Worked. ASTM-A693 - Precipitation-Hardening Stainless and Heat-Resisting Steel Plate, Sheet,
16、and Strip. ASTM-A967 - Chemical Passivation Treatments for Stainless Steel Parts. ASTM-B16/B16M - Rod, Brass, Free-Cutting Bars and Shapes for Use in Screw Machines. ASTM-B36/B36M - Plate, Brass, Sheet, Strip, and Rolled Bar. ASTM-B121/B121M - Plate, Leaded Brass, Sheet, Strip, and Rolled Bar. ASTM-
17、B124/B124M - Copper and Copper Alloy Forging Rod, Bar, and Shapes. ASTM-B209 - Aluminum and Aluminum-Alloy Sheet and Plate. ASTM-B221 - Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles and Tubes. ASTM-B241/B241M - Aluminum and Aluminum-Alloy Seamless Pipe and Seamless Extruded Tube. A
18、STM-B339 - Pig Tin. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-23971D 3 ASTM-B488 - Gold for Engineering Uses, Electrodeposited Coatings of. ASTM-B545 - Tin, Electrodeposited Coatings of. ASTM-B700 - Electrodeposited Coatings of Silver F
19、or Engineering Use. ASTM-G21 - Materials to Fungi, Synthetic Polymeric, Determining Resistance of. (Copies of these documents are available from ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959 or http:/www.astm.org.) NATIONAL CONFERENCE OF STANDARDS LABORATORIES (NCSL) IN
20、TERNATIONAL NCSL-Z540.3 - Requirements for the Calibration of Measuring and Test Equipment. (Copies of this document are available from National Conference of Standards Laboratories (NCSL) International, 1800 30thStreet, Suite 305, Boulder, CO 80301-1026; or http:/www.ncsli.org/.) SOCIETY OF AUTOMOT
21、IVE ENGINEERS (SAE) INTERNATIONAL SAE-AMS2404 - Nickel, Electroless, Plating. SAE-AMS-I-23011 - Iron-Nickel Alloys for Sealing to Glasses and Ceramics. SAE-AMS2422 - Plating, Gold. SAE-AMS-QQ-A-200 - Aluminum Alloy, Bar, Rod, Shapes, Structural Shapes, Tube, and Wire, Extruded: General Specification
22、 for. SAE-AMS-QQ-A-250 - Aluminum and Aluminum Alloy, Plate and Sheet. SAE-AMS-QQ-N-290 - Nickel Plating (Electrodeposited) . SAE-AMS2700 Passivation of Corrosion Resistant Steels. SAE-AMS-QQ-S-763 - Steel Bars, Wire, Shapes and Forgings, Corrosion-Resistant. (Copies of these documents are available
23、 from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001 or http:/www.sae.org.) 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein (except for related specification
24、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. REQUIREMENTS 3.1 Specification sheets. The individual item requirements shall be as specified herein and in accordance
25、with the applicable specification sheet. In the event of any conflict between the requirements of this specification and the specification sheets, the latter shall govern. 3.2 First article. Items furnished under this specification shall be products that have been tested and passed first article ins
26、pection (see 4.5 and 6.3). 3.3 Material. The material shall be as specified (see 3.1). When a definite material is not specified, a material shall be used which will enable the items to meet the performance requirements of this specification. Acceptance or approval of any constituent material shall
27、not be construed as a guaranty of the acceptance of the finished product. 3.3.1 Metals. Metals shall be of corrosion resistant type or suitably processed to resist corrosion. 3.3.1.1 Metal sheet. Unless otherwise specified, the material shall be selected from the following: a. Aluminum alloy sheets
28、shall conform to composition 6061 of SAE-AMS-QQ-A-250 and ASTM-B209. b. Extruded aluminum alloy shall conform to composition 6063 (refer to ASTM-B221 and ASTM-B241/B241M) or composition 6061 of SAE-AMS-QQ-A-250 and SAE-AMS-QQ-A-200. Provided by IHSNot for ResaleNo reproduction or networking permitte
29、d without license from IHS-,-,-MIL-DTL-23971D 4 c. Corrosion-resisting steel, sheets, and strips shall conform to ASTM-A240/A240M, ASTM-A666 and ASTM-A693. d. Corrosion-resisting steel bar, shapes, and forgings shall conform to SAE-AMS-QQ-S-763, ASTM-A484/A484M, and ASTM-A582 e. Copper alloy sheet s
30、hall conform to ASTM-B36/B36M, ASTM-B121/B121M, ASTM-B16/B16M, and ASTM- B124/B124M. 3.3.1.2 Iron nickel. Iron nickel alloys shall conform to SAE-AMS-I-23011 and SAE-AMS-QQ-N-290. 3.3.1.3 Gold. Gold shall conform to MIL-DTL-45204, or SAE-AMS2422 and ASTM-B488. 3.3.1.4 Dissimilar metals. Unless suita
31、bly protected against electrolytic corrosion, dissimilar metals as defined in MIL-STD-889 shall not be in intimate contact. 3.3.2 Plastic. Plastic shall conform to best manufacturing practice. 3.3.3 Rubber. Rubber shall conform to MIL-PRF-23586. 3.3.4 Fungus inert. Materials used in the construction
32、 of power dividers, power combiners, and power divider/combiners herein shall be fungus inert in accordance with ASTM-G21. Fungus inert material is defined as a material which, in all modified states and grades, is not a nutrient to fungi. 3.4 Design and construction. Items furnished under this spec
33、ification shall be of the design, construction, and physical dimensions specified (see 3.1). 3.4.1 Impedance. The nominal impedance shall be as specified (see 3.1). 3.4.2 Operating frequency range. The frequency range shall be as specified (see 3.1). 3.4.3 Ambient temperature. The ambient temperatur
34、e shall be as specified (see 3.1). 3.4.4 Headers. When headers are required (see 3.1), they shall conform to MIL-H-28719. 3.4.5 Terminals and pins. External terminations shall be aligned and identified as specified (see 3.1). 3.4.6 Coaxial connectors. The material design and construction of coaxial
35、connectors, when required (see 3.1), shall conform to MIL-PRF-39012. 3.4.7 Waveguide flanges. Unless otherwise specified (see 3.1), flanges shall mate electrically and mechanically with flanges covered by MIL-DTL-3922. 3.4.8 Connector caps. All waveguide and coaxial connections shall be sealed with
36、push-on caps to prevent damage and the entrance of moisture or foreign material during storage. 3.4.9 Waveguide. The material design and construction of waveguides used in the items, when required (see 3.1), shall conform to MIL-DTL-85. 3.4.10 Finish. 3.4.10.1 Mating surfaces. Unless otherwise speci
37、fied (see 3.1), the finish of mating surfaces shall be of gold, nickel, silver, or tin in accordance with the appropriate specifications: MIL-DTL-45204, SAE-AMS2422, ASTM-B488, SAE-AMS2404, SAE-AMS-QQ-N-290, ASTM-B700, ASTM-B545 (as restricted, see 3.4.10.3) or ASTM-B339 (see 3.4.10.3). Nickel shall
38、 be used only if other materials are unable to meet performance requirements of this specification. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-23971D 5 3.4.10.2 External surfaces. If an external surface is painted, it shall be painted wi
39、th semigloss or dull black enamel in accordance with type II of MIL-DTL-14072, or primed in accordance with MIL-PRF-22750 and coated in accordance with best manufacturing practice (see 3.1). Aluminum alloy surfaces shall be chemically treated in accordance with MIL-DTL-5541, anodic coatings or passi
40、vation treatments in accordance with MIL-A-8625 and ASTM-A967 or SAE-AMS2700, respectively. 3.4.10.3 Pure tin. The use of pure tin, as an underplate or final finish, is prohibited both internally and externally. Tin content of power divider, power combiner and power divider/combiner components and s
41、older shall not exceed 97 percent, by mass. Tin shall be alloyed with a minimum of 3 percent lead, by mass (see 6.7). 3.4.11 Threaded parts. All threaded parts shall have screw threads in the unified screw thread series in accordance with FED-STD-H28. 3.4.12 Weight. The weight, when required, shall
42、be as specified (see 3.1). 3.4.13 Life. The manufacturer shall submit to the acquiring activity evidence that items are designed to operate for a period of 5 years and that electrical performance characteristics degradation for this period of 5 years shall not exceed the specified limits (absolute m
43、aximum or minimum ratings, see 3.1). This evidence shall be in the form of a certificate to the acquiring activity on each item for which first article is requested and a written guarantee to the acquiring activity on each awarded contract. Any acquired item that fails to meet this life requirement
44、shall be replaced by the manufacturer at no cost to the Government. 3.5 Electrical performance. 3.5.1 Average coupling. When the items are tested as specified in 4.7.3, the arithmetic average of the measured coupling (dB) to the outputs shall be as specified (see 3.1) at any frequency over the speci
45、fied frequency range. 3.5.2 Voltage standing wave ratio (VSWR). When the items are tested as specified in 4.7.4, the VSWR of each port shall be not greater than the value specified (see 3.1). 3.5.3 Insertion loss. When the items are tested as specified in 4.7.5, the insertion loss (dB) shall not exc
46、eed the value specified (see 3.1). 3.5.4 Isolation. When the items are tested as specified in 4.7.6.1, 4.7.6.2, or 4.7.6.3, the isolation (dB) shall be not less than the value specified (see 3.1). 3.5.5 Phase balance. When the items are tested as specified in 4.7.7.1, 4.7.7.2, or 4.7.7.3, the phase
47、balance () shall be as specified (see 3.1). 3.5.6 Amplitude balance. When the items are tested as specified in 4.7.8.1 or 4.7.8.2, the amplitude balance (dB) shall be as specified (see 3.1). 3.5.7 Power level. When the items are tested as specified in 4.7.9, there shall be no evidence of breakdown,
48、charring, or arcing. Following this test, VSWR, insertion loss, and isolation values shall be as specified (see 3.1). 3.5.8 Electromagnetic interference (when specified, see 3.1). When the items are tested as specified in 4.7.10, the electromagnetic interference shall be within the limits of MIL-STD-461. 3.6 Environmental. 3.6.1 Seal. The sealing method shall be as specified (see 3.1). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-23971D 6 3.6.1.1 Hermetic seal (when specified, see 3.1). When the
