1、 MIL-R-83407C 20 May 2009 SUPERSEDING MIL-R-83407B 30 September 2003 MILITARY SPECIFICATION RELAYS, REED (MERCURY WETTED) 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 specification establishes
2、the general requirements for mercury wetted reed relays that perform the switching functions associated with ground control support equipment. These relays are not be used in shipboard or airborne applications. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified i
3、n 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 as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they m
4、ust 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 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the exten
5、t specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-R-83407/3 - Relays, Reed (Mercury Wetted), Solder Seal, 0 To 7.5 Volt Amperes. DEPARTMENT OF DEFENSE STANDARDS MIL-STD-202 - Electro
6、nic and Electrical Component Parts. MIL-STD-1285 - Marking of Electrical and Electronic Parts. (Copies of these documents are available online at http:/assist.daps.dla.mil/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) AMSC N/A FSC 59
7、45 Inactive for new design after 28 June 1996. No superseding specification. INCH-POUND 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 Relaydscc.dla.mil. Since contact
8、information can change, you may want to verify the currency of this address information using the ASSIST Online database at assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-83407C 2 2.3 Non-Government publications. The follo
9、wing 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. NATIONAL CONFERENCE OF STANDARDS LABORATORIES NCSL-Z540.1 - Calibration Laboratories and Measuring and Test Equipment
10、 - General Requirements. (Application for copies should be addressed to Institute of Electrical and Electronic Engineers at http:/www.ncsli.org or, P. O. Box 1331, 445 Hoes Lane, Piscataway, NJ 08854-1331). AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM G 21 - Standard Practice for Determini
11、ng Resistance of Synthetic Polymeric Materials to Fungi. (Application for copies should be addressed to ASTM International at http:/www.astm.org or, PO Box C700, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) INTERNATIONAL ORGANIZATION FOR STANDARDS (ISO) ISO 10012-1 - Quality Assurance R
12、equirements for Measuring Equipment - Part 1: Metrological Confirmation System for Measuring Equipment. (Application for copies should be addressed to American National Standards Institute (ANSI) at http:/www.iso.org or, 11 West 42nd Street, New York, NY 10036.) 2.4 Order of precedence. Unless other
13、wise 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. Nothing in this document, however, supersedes applicable laws and regulations unle
14、ss a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Specification sheets. The individual item requirements shall be as specified herein and in accordance with the applicable specification sheet. In the event of any conflict between the requirements of this specification and the specificat
15、ion sheet, the latter shall govern. 3.2 First article. When specified (see 6.2), a sample of parts shall be subjected to first article inspection (see 6.3) in accordance with 4.3. 3.3 Materials. Materials shall be as specified herein. However, when a definite material is not specified, a material sh
16、all be used which will enable the relay to meet the performance requirements of this specification. Materials used shall be self-extinguishing and shall not support combustion, give off noxious gases in harmful quantities, give off gases in quantities sufficient to cause explosion of sealed enclosur
17、es, cause contamination of the contacts or other parts of the relay, or form current carrying tracks when subjected to any of the tests specified herein. Unless otherwise specified (see 3.1), the selection of material shall be such as to provide a shelf life of at least 2 years without adversely aff
18、ecting the operation of the relay. Acceptance or approval of any constituent material shall not be construed as a guaranty of the acceptance of the finished product. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-83407C 3 3.3.1 Plastic. Plasti
19、c shall be of such quality as to ensure that the relay meets all the performance requirements of this specification 3.3.2 Ceramic. Ceramic insulating material shall be of such quality as to ensure that the relay meets all the performance requirements of this specification. Ceramic used for external
20、surfaces shall be glazed. 3.3.3 Base metals. Base metals shall be of a corrosion-resistant type or shall be plated or treated to resist corrosion. 3.3.4. Magnet wire. Magnet wire used shall enable the relay to meet the performance requirements of this specification. 3.3.5 Rubber. Rubber shall be of
21、such quality as to ensure that the relay meets all the performance requirements of this specification. 3.3.6 Fungus resistance. Materials used in the construction of relays shall be fungus inert in accordance with ASTM G 21. 3.4. Interface and construction. Relays shall be of the design, constructio
22、n, weight, and physical dimensions specified (see 3.1). Relays shall be designed to ensure proper operation when mounted as specified (see 3.1). 3.4.1 Enclosures. When specified (see 3.1), relays shall be provided with a metal enclosure for shielding and magnetic path purposes. When specified, provi
23、sions shall be provided for electrically grounding the enclosure. 3.4.2 Encapsulation. Unless otherwise specified (see 3.1), relays shall be encapsulated. 3.4.3 Contacts. Contacts shall have the load ratings and arrangements as specified (see 3.1), and shall be capable of carrying the maximum rated
24、current continuously, provided an appropriate arc suppression circuit is connected across each pair of contacts. 3.4.4 Coils. Coils shall be insulated electrically from the frame, the contacts, and the enclosure and shall be designed for continuous operation at the rated voltage. The resistance and
25、rated voltage shall be as specified (see 3.1). 3.4.4.1 Terminal identification. Unless otherwise specified (see 3.1), a contrasting colored bead shall be used to designate X1(positive, if applicable) terminal. 3.4.5 Circuit diagram. The circuit diagram shall be as specified (see 3.1). 3.4.6 Temperat
26、ure range. The operating temperature range shall be as specified (see 3.1). 3.5 Solderability (applicable to solder terminals). When relays are tested as specified in 4.5.2, the dipped surface of solid wire-lead and pin terminals shall be at least 95 percent covered with a continuous new solder coat
27、ing in accordance with method 208 of MIL-STD-202. 3.6 Dielectric withstanding voltage. When relays are tested as specified in 4.5.3, they shall withstand the specified voltage (see 3.1) without damage. The leakage current shall not exceed 1 milliampere (mA) and there shall be no evidence of damage d
28、ue to arcing (air discharge), flashover (surface discharge), or insulation breakdown (puncture discharge). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-83407C 4 3.7 Insulation resistance. When relays are tested as specified in 4.5.4, the ins
29、ulation resistance shall be as specified (see 3.1). 3.8 DC coil resistance. When relays are tested as specified in 4.5.5, the dc coil resistance shall be as specified (see 3.1). 3.9 Pickup and dropout voltage. When relays are tested as specified in 4.5.6, the pickup and dropout voltage shall be as s
30、pecified (see 3.1). 3.10 Coil power dissipation (when specified) (see 3.1). When relays are tested as specified in 4.5.7, the power dissipated shall be as specified (see 3.1). 3.11 Contact resistance. When relays are tested as specified in 4.5.8, the contact resistance of any pair of mated contacts
31、shall not exceed the specified value (see 3.1). 3.12 Operate and release time. When relays are tested as specified in 4.5.9, the operate and release time shall be as specified (see 3.1). 3.13 Coil inductance (when specified) (see 3.1). When relays are tested as specified in 4.5.10, the coil inductan
32、ce shall be as specified (see 3.1). 3.14 Contact noise (when specified) (see 3.1). Relays shall be tested as specified in 4.5.11. The peak to peak ratings for the bandwidth (dc to 10 kilohertz (kHz) shall be 400 microvolts (V) at closure, 200 V at 1.5 milliseconds (ms), 125 V at 2 ms, 60 V at 2.5 ms
33、, 35 V at 3 ms, 15 V at 4 ms, and 10 V at 5 ms. 3.15 Thermal EMF (when specified) (see 3.1). When relays are tested as specified in 4.5.12, the thermal EMF shall be as specified (see 3.1). 3.16 Capacitance (when specified) (see 3.1). When relays are tested as specified in 4.5.13, the capacitance sha
34、ll be as specified (see 3.1). 3.17 Thermal shock (high and low temperature operation). When relays are tested as specified in 4.5.14, they shall meet the following requirements at each temperature extreme. Insulation resistance - - - - - - - - - - - - - - As specified in 3.7. At high temperature, in
35、sulation resistance between coil and enclosure shall be 500 megohms (m) minimum. Pickup and dropout voltage - - - - - - - - - As specified in 3.9. Operate and release time - - - - - - - - - - As specified in 3.12. Visual examination - - - - - - - - - - - - - - - No cracking, peeling, or flaking of t
36、he finish is allowed. Following this test, dielectric withstanding voltage shall be as specified in 3.6. 3.18 Shock (specified pulse) (nonoperating). When relays are tested as specified in 4.5.15, there shall be no evidence of mechanical or electrical damage. Following this test, the dielectric with
37、standing voltage, contact resistance, and pickup and dropout voltages shall be as specified in 3.6, 3.11, and 3.9, respectively. 3.19 Vibration (nonoperating). When relays are tested as specified in 4.5.16, there shall be no evidence of breaking, cracking, chipping, or flaking of the finish or loose
38、ning of the terminals. Following this test, the dielectric withstanding voltage, contact resistance, and the pickup and dropout voltage shall be as specified in 3.6, 3.11, and 3.9, respectively. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-8
39、3407C 5 3.20 Moisture resistance (when specified) (see 3.1). When relays are tested as specified in 4.5.17, there shall be no evidence of breaking, cracking, chipping, or flaking of the finish or loosening of the terminals. Immediately after step 6 of the final cycle, the insulation resistance shall
40、 be 100 M or more. After the 24 hour drying period, the dielectric withstanding voltage, insulation resistance, contact resistance, and pickup and dropout voltages shall be as specified in 3.6, 3.7, 3.11, and 3.9, respectively. 3.21 Magnetic interference. When relays are tested as specified in 4.5.1
41、8, the pickup and dropout values shall be within the limits specified (see 3.1). 3.22 Resistance to soldering heat. When relays are tested as specified in 4.5.19, the insulation resistance, contact resistance, pickup and dropout voltage, and dc coil resistance shall be as specified in 3.7, 3.11, 3.9
42、, and 3.8, respectively. 3.23 Salt spray (corrosion). When relays are tested as specified in 4.5.20, there shall be no evidence of breaking, cracking, chipping, or flaking of the finish, or exposure of the base metal due to corrosion, which would adversely affect the performance of the relay. 3.24 T
43、erminal strength. When relays are tested as specified in 4.5.21, terminals shall be as specified (see 3.1) and there shall be no evidence of loosening or breaking of the terminals or other damage that could adversely affect the normal operation of the relays. Bending of printed circuit terminals sha
44、ll not be construed as damage, provided they can be satisfactorily reformed to their original configuration. 3.25 Life. When relays are tested as specified in 4.5.22, they shall remain electrically operative and no mechanical damage shall exist. During and following this test, the relays shall meet
45、the following requirements: DC coil resistance - - - - - - - - - - - - - - - - - As specified in 3.8. Contact resistance - - - - - - - - - - - - - - - - As specified in 3.11. Pickup and dropout voltage - - - - - - - - - - As specified in 3.9. Operate and release time - - - - - - - - - - - As specifi
46、ed in 3.12. Dielectric withstanding voltage- - - - - - - - As specified in 3.6. Insulation resistance - - - - - - - - - - - - - - As specified in 3.7. 3.26 Marking. Relays shall be marked in accordance with MIL-STD-1285 with the following information, as a minimum: a. Military Part or Identifying Nu
47、mber (PIN). b. Circuit diagram (see 3.1). c. CAGE (FSCM) and date codes. d. Position direction arrow . e. Rated coil voltage. 3.27 Soldering. Electrical connections shall be mechanically secure and electrically continuous before and after soldering. 3.28 Screening (when specified) (see 3.1). 3.28.1
48、Temperature cycling. Each relay shall be tested as specified in 4.5.23.1. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-83407C 6 3.28.2 ARC duration. Each relay shall be tested as specified in 4.5.23.2. The ARC duration shall not exceed 200 m
49、icroseconds (s) on turn off. 3.29 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible, provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs. 3.30 Pure tin. The use of pure tin, as an underplate or final finish, is prohibited b
