1、Comments, suggestions or questions on this document should be addressed to Defense Supply Center Columbus, ATTN: VAT, Post Office Box 3990, Columbus, OH 43218-3990, or emailed to switchdla.mil. Since contact information can change, you may want to verify the currency of this address information usin
2、g the ASSIST Online database at https:/assist.daps.dla.mil/. AMSC N/A FSC 5930 INCH-POUND MIL-DTL-83731D 2 July 2010 SUPERSEDING MIL-DTL-83731C 30 March 2004 DETAIL SPECIFICATION SWITCHES, TOGGLE, UNSEALED AND SEALED, GENERAL SPECIFICATION FOR This specification is approved for use by all Department
3、s and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the military requirements for unsealed and toggle sealed toggle switches. 2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not includ
4、e documents cited in other sections of this specification 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 3 a
5、nd 4 of this specification, whether or not they are listed. 2.2 Government documents. 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 do
6、cuments are those cited in the solicitation or contract. FEDERAL STANDARDS FED-STD-H28 - Screw Thread Standards for Federal Services. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-DTL-5624 - Turbine Fuel Aviation, Grade JP-4 or JP-5. MIL-PRF-7808 - Lubricating Oil, Aircraft Turbine Engine, Synthetic Base
7、. MIL-PRF-15160/2 - Fuses, Instrument, Power and Telephone (Non-indicating) Style F02. MIL-PRF-87252 - Coolant Fluid, Hydrolytically Stable, Dielectric. STANDARDS MIL-STD-202 - Electronic and Electrical Component Parts MIL-STD-1285 - Marking of Electrical and Electronic Parts. (Copies of these docum
8、ents are available online at https:/assist.daps.dla.mil/quicksearch or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83731D 2 2.3 N
9、on-Government publications. 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 NATIONAL STANDARDS INSTITUTE (ANSI) ANSI/J-STD-002 - Solderability Test
10、s for Component Leads, Terminations, Lugs, Terminals and Wires. ANSI/NCSL Z540.3 - Calibration of Measuring and Test Equipment, Requirements for (Application for copies can be found online at http:/www.ansi.org/ or American National Standards Institute (ANSI), 25 West 43rd Street, New York, NY 10036
11、-8002, telephone 212-642-4900, fax 212-302-1286) AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM-E1119 - Glycol, Industrial Grade Ethylene, Standard Specification for. (Copies of these documents are available online at www.astm.org or from the American Society for Testing and Materials, 100 B
12、arr Harbor Drive, West Conshohocken, Pennsylvania, 19428-2959.) INTERNATIONAL ORGANIZATION FOR STANDARDS (ISO) ISO 10012-1 - Quality Assurance Requirements for Measuring Equipment - Part 1; Meteorological Confirmation System for Measuring Equipment. (Application for copies can be found online at htt
13、p:/www.ansi.org or should be addressed to the American National Standards Institute (ANSI), 25 West 43rd Street, New York, NY 10036-8002, telephone 212-642-4900, fax 212-302-1286). SOCIETY OF AUTOMOTIVE ENGINEERS SAE-AS7928 - Terminals, Lug: Splices, Conductor: Crimp Style Copper, General Specificat
14、ion for. SAE-AS50861 - Wire, Electrical, Hook-up and Interconnecting, Polyvinyl Chloride Insulation, Nylon Jacket, Tin-Coated Copper Conductor, 600 Volt, 105C. (Copies of these documents are available online at www.sae.org or from Society of Automotive Engineers, 400 Commonwealth Drive, Warrendale,
15、Pennsylvania, 15096-0001) UNDERWRITERS LABORATORIES, INC. (UL) UL94 - Test for Flammability of Plastic Materials for Parts in Devices and Appliances. (Copies of these documents are available online at or from the Underwriters Laboratories, Inc., 333 Pfingsten Road, Northbrook, IL 60062-2002.) 2.4 O
16、rder of precedence. In the event of a conflict between the text of this document and the references cited herein (except for related associated detail specifications or specification sheets), the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws an
17、d regulations unless specific exemption has been obtained. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83731D 3 3. REQUIREMENTS 3.1 MS military standards or military specification sheets. Individual switch requirements shall be as specifi
18、ed herein and in accordance with the applicable MS military standard or military specification sheet. In the event of any conflict between the requirements of this specification and the MS military standard or military specification sheet, the latter shall govern. 3.2 Switch categories. Switches fur
19、nished under this specification shall be category I, or II, as defined in 3.2.1, or 3.2.2, respectively. 3.2.1 Category I switches. Switches completely defined by an MS military standard or military specification sheet. Category I switches shall be ordered in accordance with 6.2.1. 3.2.2 Category II
20、 switches. Switches the same as category I switches except for minor differences such as termination configuration, operating characteristics, and minor actuator variations, which do not change the basic design or construction of the qualified item (see 4.5). Category II switches shall be acquired f
21、rom a source listed on the applicable qualified products list for the particular similar product in category I. Category II switches shall be ordered in accordance with 6.2.2. These switches are nonstandard. 3.3 Qualification. Category I switches furnished under this specification shall be products
22、that are manufactured by a manufacturer authorized by the qualifying activity for listing on the applicable qualified products list before contract award. (see 4.4 and 6.3) 3.4 Materials. Materials shall be used which will enable the switches to meet the performance requirements of this specificatio
23、n. Acceptance or approval of any constituent material shall not be construed as a guaranty of acceptance of the finished product. 3.4.1 Metals. All metal parts, other than current carrying parts, shall be of corrosion resistant material or shall be suitably protected to resist corrosion. 3.4.1.1 Fer
24、rous material. Ferrous material shall not be used for current carrying parts. 3.4.1.2 Dissimilar metals. Unless suitably protected against electrolytic corrosion, dissimilar metals shall not be used in intimate contact with each other. Dissimilar metals are defined as metal specimens that are in con
25、tact or otherwise electrically connected to each other in a conductive solution to generate an electrical current. For additional information and guidance on dissimilar metals (see 6.8). 3.2.1.2 Pure tin. The use of pure tin, as an underplate or final finish, is prohibited both internally and extern
26、ally. Tin content of switch components and solder shall not exceed 97 percent, by mass. Tin shall be alloyed with a minimum of 3 percent lead, by mass (see 6.13) 3.4.2 Insulation. Materials for insulation shall be used which will enable the switch to meet the performance requirements of this specifi
27、cation. Plastic materials shall be fungus inert and shall meet flammability requirements of V-0 in accordance with UL94. For additional information and guidance on ceramic and thermoplastic material see 6.9. 3.4.3 Silicone rubber. Silicone rubber parts, when used, shall be selected to enable the swi
28、tch to meet the performance requirements of this specification. For additional information and guidance on silicone rubber material see 6.10. 3.4.4 Potting compounds. Potting compounds, when used, shall be selected to enable the switch to meet the performance requirements of this specification. For
29、additional information and guidance on potting compounds, see 6.11. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83731D 4 3.5 Interface and dimensions. Switches shall be so constructed as to insure proper operation when mounted in any posi
30、tion. The switches shall meet the interface and dimensions specified (see 3.1). 3.5.1 Toggle lever. The toggle lever shall have a lusterless finish and shall be insulated from all current carrying parts. 3.5.2 Terminals. Terminals shall be as specified (see 3.1). Only the number of terminals require
31、d to accomplish the circuit characteristics shall be furnished. 3.5.2.1 Solderable terminals. Solderable terminals shall be treated to facilitate soldering. Silver plating shall not be used as an external coating. Terminals shall be designed so that wires can be mechanically secured prior to solderi
32、ng. Terminals may be tapped or drilled after coating. 3.5.2.2 Screw terminals. Screw terminals shall be provided with the hardware specified (see 3.1 and the appendix). 3.5.2.3 Integrated wire termination. Switches with integrated wire termination shall be designed to accept terminal pins as specifi
33、ed (see 3.1). 3.5.3 Mounting bushing. The mounting bushing shall be as specified (see 3.1). For toggle sealed switches, the bushing shall be provided with a seal between the toggle lever and the switching mechanism. The body of the elastomer seal shall not protrude from the top of the bushing with t
34、he exception of the tapered joint or meniscus where the seal joins the toggle lever, which may be permitted to exceed the height of the mounting bushing slightly. 3.5.3.1 Anti-rotational means. All switches shall be designed to have an anti-rotational mounting means which shall be as specified (see
35、3.1). 3.5.4 Hardware. Each switch shall be provided with the mounting and terminal hardware as specified (see 3.1 and the appendix). Crimp pin contacts, for switches with integrated wire termination, are not supplied with the switch. 3.5.5 Screw threads. Screw threads on external threaded parts shal
36、l be in accordance with FED-STD-H28. All threaded parts shall engage by at least two full threads. Threading of nonmetallic parts is not permitted. 3.5.6 Weight. Weight shall be as specified (see 3.1). 3.6 Performance. 3.6.1 Solderability (applicable to solderable terminals). When tested as specifie
37、d in 4.7.2, solder shall be of such a quality as to enable the switch to meet the performance requirements of this specification. For guidance on solder, see 6.12. Solder shall not be used to obtain mechanical strength. 3.6.2 Resistance to soldering heat (applicable to solderable terminals). When sw
38、itches are tested as specified in 4.7.3, the switches shall remain operable. When opened, there shall be no internal deformation or damage. 3.6.3 Switching characteristics. When tested as specified in 4.7.4, switches shall operate as specified (See 3.1). 3.6.4 Strength of terminals. When switches ar
39、e tested as specified in 4.7.5, there shall be no breakage, loosening or rotating of terminals, and no damage to the switch. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83731D 5 3.6.5 Strength of toggle lever, pivot and lever stop. When s
40、witches are tested as specified in 4.7.6, there shall be no malfunction, damage, breakage or short circuit; switches shall operate mechanically and electrically. 3.6.6 Strength of mounting bushing. When switches are tested as specified in 4.7.7, there shall be no loosening of the mounting bushing or
41、 other mechanical damage. 3.6.7 Contact voltage drop. When switches are tested as specified in 4.7.8, the contact voltage drop shall not exceed 2.5 millivolts initially and 5 millivolts after mechanical endurance. 3.6.8 Dielectric withstanding voltage. When switches are tested as specified in 4.7.9,
42、 the switches shall withstand the application of the specified voltages without arcing, flashover, breakdown of insulation, or damage; there shall be no momentary flashover or leakage current in excess of 500 microamperes. 3.6.9 Mechanical endurance. When switches are tested as specified in 4.7.10,
43、there shall be no deterioration of the toggle seal, mechanical breakage or malfunction. Circuitry and degree of toggle lever movement shall be as specified (see 3.1). 3.6.10 Electrical overload, electrical endurance, intermediate current and temperature rise. When switches are tested as specified in
44、 4.7.11, each pair of switch contacts under test shall open and close the circuit in proper sequence during each cycle of the switch actuating member. There shall be no malfunction or damage during or after the test and any blown fuse or tripped circuit breaker shall constitute failure. When switche
45、s are tested as specified in 4.7.11.6, the temperature rise of the switch terminals shall not exceed 50C. At the conclusion of the test, switches shall be electrically and mechanically operable while controlling the test load, at the test environment and at room conditions. Electrical tolerances are
46、 as follows: Voltage: + 5 percent for 28 V, 125 V, and 250 V; DC + 7 percent for 125 V and 250 V; AC Frequency: + 5 percent Current: + 5 percent on all voltages 3.6.11 Short circuit. When tested as specified in 4.7.12, switch contacts under test shall open after each closure and there shall be no me
47、chanical failure or electrical damage. 3.6.12 Vibration. When switches are tested as specified in 4.7.13, there shall be no separation of closed contacts or closure of open contacts in excess of 10 microseconds. There shall be no damage. 3.6.13 Shock. When switches are tested as specified in 4.7.14,
48、 there shall be no separation of closed contacts or closure of open contacts in excess of 10 microseconds for Method I (see 4.7.14.1), and 20 milliseconds for Method II (see 4.7.14.2). There shall be no damage. 3.6.14 Salt spray (corrosion). When switches are tested as specified in 4.7.15, there sha
49、ll be no warping, cracking, excessive corrosion, or other damage and the specified cycling shall be completed without failure. The mounting hardware shall be readily removable at the conclusion of the test. 3.6.15 Thermal shock. When switches are tested as specified in 4.7.16, there shall be no mechanical or electrical damage, or loosening of rivets or other fastening devices. 3.6.16 Moisture resistance. When switches are tested as specified in 4.7.17, there
