1、AMSC N/A FSC 5985 MIL-DTL-28837C 5 June 2012 SUPERSEDING MIL-DTL-28837B 26 March 2004 DETAIL SPECIFICATION MIXER STAGES, RADIO FREQUENCY 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 specificati
2、on covers the general requirements for mixer stages, radio frequency for use in military systems (see 6.1). 1.2 Part or Identifying Number (PIN). The military PIN must consist of the letter “M“ followed by the basic number of the specification sheet, an assigned dash number (see 3.1), and the letter
3、 N or S; where N indicates a nonscreened item and S indicates a screened item (see 3.5, 3.6, and table III.) Mixers intended for space environment shall be marked with “T”. M28837/1 - 01 N or S or T Military designator and Dash number designated Nonscreened Screened Space flight specification sheet
4、number on specification sheet mixers 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 additional information or a
5、s 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 documents. 2.2.1 Specificatio
6、ns, 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-Thread St
7、andards for Federal Services. 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 emailed to TubesAmpsdla.mil. Since contact information can change, you may want to verify the curren
8、cy 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-DTL-28837C 2 DEPARTMENT OF DEFENSE SPECIFICATION MIL-DTL-85 - Waveguides, Rigid, Rectangular, General Sp
9、ecification for. MIL-DTL-3922 - Flanges, Waveguide, General Purpose, General Specification for. MIL-DTL-5541 - Chemical Conversion Coatings on Aluminum and Aluminum Alloys. MIL-DTL-14072 - Finishes for Ground Based Electronic Equipment. MIL-DTL-45204 - Gold Plating, Electrodeposited. MIL-P-24691/3 -
10、 Pipe and Tube, Corrosion-Resistant, Stainless Steel, Seamless or Welded. MIL-H-28719 - Header, Hermetically Sealed. MIL-PRF-39012 - Connectors, Coaxial, Radio Frequency, General Specification for. MIL-DTL-55302 - Connectors, Printed Circuit Subassembly and Accessories. DEPARTMENT OF DEFENSE STANDAR
11、DS MIL-STD-129 - Military Marking for Shipment and Storage. MIL-STD-202 - Test Methods for Electronic and Electrical Component Parts. MIL-STD-889 - Dissimilar Metals. MIL-STD-1276 - Leads for Electronic Component Parts. - Marking of Electrical and Electronic Parts. (Copies of these documents are ava
12、ilable online at https:/assist.daps.dla.mil/quicksearch or from the 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 otherwi
13、se specified, the issues of these documents are those cited in the solicitation or contract. NATIONAL CONFERENCE OF STANDARDS LABORATORIES (NCSL) NCSL- Z540.3 - Requirements for the Calibration of Measuring and Test Equipment. (Copies are available online at http:/www.ncsli.org or from National Conf
14、erence of Standards Laboratories (NCSL), 2995 Wilderness Place Suite 107, Boulder, Colorado 80301-5405.) 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 Applica
15、tions ASTM A484/A484M - Standard Specification for General Requirements for Stainless Steel Bars, Billets, and Forgings. ASTM-A582/A582M - Standard Specification for Free-Machining Stainless Steel Bars. ASTM-A666 - Steel, Sheet, Strip, Plate, and Flat Bar, Austenitic Stainless, Annealed or Cold-Work
16、ed. ASTM-A693 - Precipitation-Hardening Stainless and Heat-Resisting Steel Plate, Sheet, and Strip. ASTM-B16/B16M - Rod, Brass, Free-Cutting, Bar and Shapes for use in Screw Machines. ASTM-B26/B26M - Aluminum-Alloy Sand Castings. ASTM-B36/B36M - Plate, Brass, Sheet, Strip, and Rolled Bar. ASTM-B85/B
17、85M - Aluminum-Alloy Die Castings. ASTM-B108/B108M - Aluminum-Alloy Permanent Mold Castings, Standard Specification for. ASTM-B121/B121M - Plate, Leaded Brass, Sheet, Strip, and Rolled Bar. ASTM-B124/B124M - Copper and Copper Alloy Forging Rod, Bar, and Shapes. ASTM-B194 - Copper-Beryllium Alloy Pla
18、te, Sheet, Strip, and Rolled Bar. ASTM B196/B196M - Rod and Bar, Copper-Beryllium Alloy 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 Se
19、amless Extruded Tube. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-28837C 3 ASTM-B308/B308M - Aluminum-Alloy 6061-T6 Standard Structural Shapes. ASTM-B488 - Gold for Engineering Uses, Electrodeposited Coatings of. ASTM-B545 - Tin, Electrod
20、eposited Coatings of. ASTM-B700 - Electrodeposited Coatings of Silver for Engineering Use. ASTM D1710 - Standard Specification for Extruded Polytetrafluoroethylene (PTFE) Rod, Heavy Walled Tubing and Basic Shapes. ASTM D4894 - Standard Specification for Polytetrafluoroethylene (PTFE) Granular Moldin
21、g and Ram Extrusion Materials. ASTM D4895 - Standard Specification for Polytetrafluoroethylene (PTFE) Resin Produced From Dispersion. ASTM-D5948 - Compounds, Molding, Thermosetting. (Copies of these documents are available from ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2
22、959 or www.astm.org.) SOCIETY OF AUTOMOTIVE ENGINEERS (SAE) INTERNATIONAL SAE-AMS2404 - Plating, Electroless Nickel SAE-AMS2422 - Plating, Gold. SAE-AMS4290 - Aluminum Alloy, Die Castings 9.5si-0.5mg (360.0-F). SAE-AMS4291 - Aluminum Alloy, Die Castings 8.5si-3.5cu (A380.0-F) (See As 1990) As Cast.
23、SAE-AMS5511 - Steel, Corrosion-Resistant, Sheet, Strip, and Plate 19 Cr - 9.5 Ni (304L) Solution Heat Treated. SAE-AMS-I-23011 - Iron Nickel Alloys for Sealing to Glasses and Ceramics. SAE-AMS-QQ-A-250 - Aluminum and Aluminum-Alloy, Plate and Sheet. SAE-AMS-QQ-N-290 - Nickel Plating (Electrodeposite
24、d). SAE-AMS-QQ-S-763 - Steel Bars, Wire, Shapes, and Forgings; Corrosion Resistant. SAE-J452 - Chemical Compositions, Mechanized and Physical Properties of SAE, Aluminum Casting Alloys, General Information. (Copies of these documents are available from SAE International, 400 Commonwealth Drive, Warr
25、endale, PA 15096-0001 or 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 sheets), the text of this document takes precedence. Nothin
26、g in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Specification sheets. The individual mixer requirements shall be as specified herein and in accordance with the applicable specification sheets. In the event of
27、any conflict between requirements of this specification and the specification sheet, the latter shall govern. 3.2 Qualification. Mixers covered by specification sheets furnished under this specification shall be products which are qualified for listing on the applicable qualified products list at th
28、e time set for the opening of bids (see 4.5 and 6.3) 3.3 Material. The material shall be as specified. When a definite material is not specified, a material shall be used which will enable the mixers to meet the performance requirements of this specification. Acceptance or approval of any constituen
29、t material shall not be construed as a guaranty of the acceptance of the finished product. Unless otherwise specified (see 3.1), the material shall be selected from the following materials. a. Aluminum alloy plates and sheet shall conform to the composition 6061 of ASTM-B209 and SAE-AMS-QQ-A-250; ex
30、truded aluminum alloy shall conform to composition 6063 of ASTM-B241/B241M, or composition 6061 of ASTM-B221. Aluminum bar shall conform to 6061 per ASTM-B221 and ASTM-B241/241M. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-28837C 4 b. Cor
31、rosion-resisting steel plates, sheets, and stays shall conform to ASTM-A240/A240M, ASTM-A-666, and ASTM-A693 and SAE-AMS5511. Corrosion-resisting forging shall conform to SAE-AMS-QQ-S-763, and corrosion-resisting steel pipe shall conform to MIL-P-24691/3. Corrosion resisting steel bar shall conform
32、to ASTM-A582/A582M and ASTM A484/A484M. c. Copper alloy sheet shall conform to ASTM-B36/B36M and ASTM-B121/B121M. d. Aluminum alloy shall conform to alloy A360 of ASTM-B85/B85M, ASTM-B26/B26M, ASTM-B108/B108M, SAE-J452, SAE-AMS4290, and SAE-AMS4291, alloy 356-T6 of ASTM-B108/B108M or alloy D712.0-F
33、of ASTM-B26/B26M. e. Brass shall conform to alloy 360 of ASTM-B121/B121M, ASTM-B36/B36M, ASTM-B16/B16M, and ASTM- B124/B124M. f. Beryllium copper shall conform to ASTM-B194 or ASTM B196/B196M. g. Pure tin shall be prohibited internally and externally. 3.3.1 Dissimilar metal. Unless suitably protecte
34、d against electrolytic corrosion, dissimilar metal as defined in MIL-STD-889 shall not be in intimate contact. 3.3.2 Plastic. Plastic shall conform to ASTM-D5948, ASTM D4894, ASTM D4895 and ASTM D1710. 3.3.3 Fungus. Material used in the construction of mixers shall be fungus inert. 3.3.4 Headers. He
35、aders shall conform to MIL-H-28719. 3.4 Design and construction. Mixers shall be of design, construction, and physical dimensions specified (see 3.1). 3.4.1 Frequency response range. The frequency response range shall be as specified (see 3.1). 3.4.2 Nominal impedance. Unless otherwise specified (se
36、e 3.1), the nominal impedance looking into the local oscillator and RF ports of Transverse-Electro-Magnetic (TEM) mixers shall be 50 ohms. 3.4.3 Input level. The input level for mixers shall be as specified (see 3.1). 3.4.4 Threaded parts. All screw threads used in construction of mixers shall be in
37、 accordance with FED-STD-H28. 3.4.5 Mounting. Mixers shall be mounted in any position. 3.4.6 RF connections. 3.4.6.1 Coaxial connectors. Coaxial connectors for a specific mixer shall conform to MIL-PRF-39012 as applicable (see 3.1). 3.4.6.2 Waveguide flanges. Unless otherwise specified (see 3.1), al
38、l flanges used on mixers shall mate electrically and mechanically with flanges covered by MIL-DTL-3922 or (see 6.6). 3.4.6.3 Printed circuit connectors. Printed circuit connections for a specific mixer shall conform to MIL-DTL-55302 as applicable (see 3.1). 3.4.6.4 Leads. Lead connections for a spec
39、ific mixer shall be a chemical composition conforming to MIL-STD-1276 or SAE-AMS-I-23011 and unless otherwise specified (see 3.1), shall be solderable. 3.4.6.5 Socket pins. Unless otherwise specified (see 3.1), socket pins for a specific mixer shall be in accordance with header specification MIL-H-2
40、8719. 3.4.6.6 Receptacles. Receptacle connections for a specific mixer shall be as specified (see 3.1). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-28837C 5 3.4.6.7 Connection caps. All waveguide and coaxial connections shall be sealed wi
41、th push-on plastic caps to prevent both damage and the entrance of moisture and foreign material during storage. 3.4.7 Waveguide. Waveguides used in the manufacturing of the mixers shall conform to MIL-DTL-85 or (see 6.7), as applicable (see 3.1). 3.4.8 Finish. Unless otherwise specified (see 3.1),
42、the finish shall be as specified in 3.4.8.1 through 3.4.8.4. 3.4.8.1 RF mating surfaces. Mating surfaces shall be finished in gold, nickel or silver conforming to MIL-DTL-45204, SAE-AMS2422, ASTM-B488, SAE-AMS-QQ-N-290, ASTM-B700 and SAE-AMS2404. Nickel shall be used only if no other surface finish
43、can meet the performance requirements. 3.4.8.2 External surfaces. All external surfaces excepting RF mating surfaces shall be finished in accordance with MIL-DTL-14072. 3.4.8.3 Aluminum alloys. Aluminum alloy surfaces shall be chemically treated in accordance with MIL-DTL-5541; however, electrical m
44、ating surfaces shall be conductive. 3.4.8.4 Pure tin. The use of pure tin, as an underplate or final finish, is prohibited both internally and externally. Tin content of mixer stages and solder shall not exceed 97 percent, by mass. Tin shall be alloyed with a minimum of 3 percent lead, by mass (see
45、6.8). Lead-free silver-tin (Sn96Ag04) or antimony-tin (Sn95Sb05), high temperature solders may be used where high temperature solder is necessary with approval of the qualifying activity. The tin content of lead-free high temperature solders shall not exceed 97 percent by mass. 3.4.9 Weight. The wei
46、ght shall be as specified (see 3.1). 3.4.10 Temperature range. The temperature range shall be as specified (see 3.1). 3.4.11 Life. Unless otherwise specified (see 3.1), the manufacturer shall submit to qualification activity evidence that mixers are designed to operate for 1 year and degradation for
47、 this period shall not exceed specified limits (see 3.1). This evidence on each mixer for which qualification is requested shall be a certificate to the qualifying activity and a written guaranty shall be furnished to the acquiring activity on each awarded contract. Any acquired mixer that fails to
48、meet this life requirement shall be replaced by the manufacturer at no cost to the Government. 3.5 Preconditioning (screened only). All screened mixers shall be preconditioned as specified in 4.7.2 and shall subsequently meet the electrical requirements specified (see 3.1). 3.6 Burn-in (screened only). All screened mixers shall be burned in as specified in 4.7.3, and shall subsequently meet the electrical requirements specified (see 3.1). 3.7 Electrical characteristics. When mixers are tested as specified in 4.7.4, the applicable electrical characteristics and tolerances shall be as
