1、AMSC N/A FSC 5930 INCH-POUND MIL-DTL-83731/21B 2 July 2010 SUPERSEDING MIL-S-83731/21A 20 March 1987 DETAIL SPECIFICATION SHEET SWITCHES, TOGGLE, MINIATURE, LEVER SEAL, PANEL SEAL, FOUR POLE LOGIC LOAD TO 5 AMPERES Inactive for new design after 4 May 2003 This specification is approved for use by al
2、l Departments and Agencies of the Department of Defense. The requirements for acquiring the switches described herein shall consist of this specification sheet and MIL-DTL-83731. FIGURE 1. Dimensions and configurations. Provided by IHSNot for ResaleNo reproduction or networking permitted without lic
3、ense from IHS-,-,-MIL-DTL-83731/21B 2 PRINTED CIRCUIT TERMINATION FIGURE 1. Dimensions and configurations Continued. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83731/21B 3 Inches mm Inches mm Inches mm .001 0.03 .075 1.91 .250 6.35 .002
4、0.05 .080 2.03 .252 6.40 .003 0.08 .093 2.36 .255 6.48 .005 0.13 .115 2.92 .295 7.49 .010 0.25 .155 3.94 .320 8.13 .020 0.51 .185 4.70 .352 8.94 .031 0.78 .189 4.80 .400 10.16 .040 1.02 .190 4.83 .410 10.41 .046 1.17 .225 5.72 .415 10.54 .047 1.19 .232 5.89 .468 11.89 .052 1.32 .234 5.94 .510 12.95
5、.060 1.52 .235 5.97 .855 21.72 .065 1.65 .240 6.10 1.375 34.93 1.470 37.34 NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for information only. 3. Unless otherwise specified, tolerance is .005 (0.13 mm). 4. Direction of internal mechanism movement is opposite to direction of tog
6、gle movement. 5. Mounting bushing is D-shaped. 6. To insure proper sealing by panel seal, locking ring should be used on front of panel only. 7. Terminal identification may be marked on sides of switch body. Terminal numbers 4 through 9 need not be identified. FIGURE 1. Dimensions and configurations
7、 Continued. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83731/21B 4 REQUIREMENTS: Dimensions and configuration: See figures 1 and 2. Material and finish: Bushing shall be brass, nickel plated. Toggle lever shall be brass, bright chrome pl
8、ated. Frame shall be stainless steel. The contacts shall be gold plate over nickel over silver over brass. Mounting hardware: Each switch shall be supplied with one hexagon nut and one internal-tooth lockwasher in accordance with the appendix of MIL-DTL-83731, one locking ring (see figure 3), and on
9、e panel seal (see figure 3). The panel seal shall be silicone rubber. Weight: .02 pound maximum. Electrical ratings: See table I. Strength of terminals: Method 211 of MIL-STD-202, test condition A. The applied force shall be one pound. Strength of toggle lever, pivot, and lever stop: Test (a) shall
10、use a 10 pound load; test (b) shall use a 8 pound load. Dielectric withstanding voltage: Test at atmospheric pressure only. Mechanical endurance: 10,000 cycles at -25C +0C, -4C, and 10,000 cycles at 71C +4C, -0C. Electrical endurance, electrical overload, electronic logic, and temperature rise: Mult
11、ipole switches are to be tested with a load on each pole and with the same polarity on adjacent poles in accordance with figure 2. High level resistive load (dc and ac): 10,000 cycles. Altitude testing not applicable. FIGURE 2. Test circuit. Provided by IHSNot for ResaleNo reproduction or networking
12、 permitted without license from IHS-,-,-MIL-DTL-83731/21B 5 TABLE I. Electrical ratings. Type of load High level (current in amperes) Logic level 28 V dc 125 V ac, 60 Hz 115 V ac, 400 Hz 5 V dc Resistive Inductive Lamp 5 2 1 5 2 1 5 2 1 0.010 ampere - - Logic level load: 10,000 cycles, tested in acc
13、ordance with ANSI/EIA RS-448, method 17. Rate of actuation in accordance with MIL-DTL-83731 electrical endurance. Fifty percent of test cycles at room ambient conditions. Fifty percent of test cycles at 71C, +4, -0C. No “sticks” or “misses” allowed. Inductive load (dc and ac): 10,000 cycles. Altitud
14、e testing not applicable. Lamp load: Switches shall make and break the rated lamp load for 10,000 operating cycles. Intermediate current: Not applicable. Short circuit: Use 100 amperes at 28 V dc. Flux sealed: The sealing is obtained when the base is sealed to prevent flux from entering the switch c
15、ase during the wave soldering process. Flux seal test: Three additional switches shall be tested as follows during qualification and group B inspection: Measure and record initial contact resistance. Place switches, terminals down, into a shallow pan. Pour flux at 80F 5F, type RMA of J-STD-004, spec
16、ific gravity 0.896, into pan without splashing until level of flux is approximately 1/16 inch above the bottom of the plastic switch case and let switches soak for 10 minutes. Remove switches from flux, clean with flux cleaning solvent and immediately put into oven for drying at 175F for two hours.
17、After switches have cooled to room temperature, repeat initial measurement. Contact resistance shall not increase by more than 10 milliohms over the initial reading. Disassemble and visually examine the contact area for evidence of flux. Any evidence of flux shall be cause for rejection. Part number
18、: The part number shall consist of the prefix M83731/21followed in order by the appropriate two-digit number from table II and the number from table III as shown in the following example: M 83731/21 - 32 1 | | | | | | | | Number from table III denotes Military designation_| | | |_ the switch is with
19、 solder | | lug terminals. Specification sheet number _| |_ Number from table II denotes switch has ON-OFF-ON circuit. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83731/21B 6 TABLE II. Circuit for switching characteristic. Circuit 1/ Circ
20、uit with toggle in Toward flat (down position) Center Opposite flat (up position) 21 1-2 ON 7-8 OFF 2-3 ON 8-9 4-5 10-11 5-6 11-12 23 1-2 ON 7-8 NONE 2-3 ON 8-9 4-5 10-11 5-6 11-12 26 1-2 MOM-ON 7-8 NONE 2-3 ON 8-9 4-5 10-11 5-6 11-12 27 1-2 MOM-ON 7-8 OFF 2-3 MOM-ON 8-9 4-5 10-11 5-6 11-12 31 1-2 M
21、OM-ON 7-8 OFF 2-3 ON 8-9 4-5 10-11 5-6 11-12 32 1-2 ON 7-8 2-3 2-3 8-9 2-3 ON 8-9 4-5 10-11 4-5 10-11 5-6 11-12 33 1-2 MOM-ON 7-8 2-3 2-3 8-9 2-3 ON 8-9 4-5 10-11 4-5 10-11 5-6 11-12 34 1-2 MOM-ON 7-8 2-3 ON 8-9 NONE 4-5 10-11 5-6 11-12 35 1-2 MOM-ON 7-8 2-3 ON 8-9 2-3 ON 8-9 4-5 10-11 4-5 10-11 5-6
22、 11-12 1/ Circuit numbers 32, 33, and 35 replace and are interchangeable with circuits previously identified as 41, 42, and 43 respectively. TABLE III. Termination type. Solder lug 1 Printed circuit 2 Reference Documents MIL-DTL-83731 ANSI/EIA RS-448 MIL-STD-202 J-STD-004 The margins of this specifi
23、cation are marked with vertical lines to indicate where modifications from this revision were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of th
24、is document based on the entire content irrespective of the marginal notations. Custodians: Preparing activity: Navy - EC DLA - CC Air Force - 85 DLA - CC (Project 5930-2008-053) NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at https:/assist.daps.dla.mil/ . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
