1、 MIL-DTL-83526/21B 20 June 2013 SUPERSEDING MIL-DTL-83526/21A 11 January 2010 DETAIL SPECIFICATION SHEET CONNECTOR, FIBER OPTIC, CIRCULAR HERMAPHRODITIC, BULKHEAD, LOW PROFILE WITHOUT STRAIN RELIEF, JAM-NUT MOUNT, 2 AND 4 POSITIONS, EXPANDED BEAM This specification is approved for use by all Depart-
2、 ments and Agencies of the Department of Defense. The requirements for acquiring the product described herein shall consist of this specification sheet and MIL-DTL-83526 NOTE: See table I for dimensional values. FIGURE 1. Jam-nut mount low-profile bulkhead hermaphroditic connector with protective ca
3、p. AMSC N/A FSC 6060 METRIC Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83526/21B 2 TABLE I. Jam-nut mount bulkhead hermaphroditic connector with protective cap dimensions. 1/ Inch equivalents may contain rounding inaccuracies and are giv
4、en for reference purposes only. 2/ Lanyard length to be minimum necessary to facilitate ease of installation and removal of protective cap. Designator Descriptions Dimensions 1/ Maximum Minimum mm inches mm inches A Length from mating face to back end of connector shell 32.2 1.27 - - B Length from m
5、ating face to connector panel-mount surface 18.5 .73 17.5 .69 C Diameter of connector panel flange 37 1.46 - - D Panel seal compression 0.6 .02 0.3 .01 E Diameter of protective cap coupling nut 27.2 1.1 F Length of lanyard 2/ - - - - G Length from mating face to installed end of protective cap 25 1.
6、0 - - J Length required from panel mounting surface for protective cap removal 62 2.44 - - K Length of connector rearward from rear panel mounting surface 14.4 .57 - - L Diameter of outer housing mating sleeve 26.7 1.05 - - X Diameter of individual fiber optic cables 1.5 .06 - - Y Width of yellow ba
7、nd - - 2 .08 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83526/21B 3 NOTES: 1. See table II for dimensions. 2. Face seal configuration optional provided all performance requirements are met. 3. Chamfer 2.6 mm OD min X 45. 4. Pin geometry
8、is optional provided all performance requirements are met. 5. Break all sharp edges. FIGURE 2. Bulkhead connector interface dimensions (section view A-A, see figure 3). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83526/21B 4 NOTE: See tab
9、le II for dimensional values. FIGURE 3. Connector mating face dimensions (4 channel). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83526/21B 5 NOTE: See table II for dimensional values. FIGURE 4. Expanded beam insert (section view B-B, see
10、 figure 3). NOTE: See table II for dimensional values. FIGURE 5. Connector mating face dimensions (2 channel). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83526/21B 6 TABLE II. Bulkhead connector interface dimensions. Designator Descripti
11、ons Dimensions 1/ Maximum Minimum mm inches mm inches BA Alignment pin protrusion 5.1 .201 4.9 .193 BB Alignment pin diameter 2 .08 1.998 .078 BC Alignment receptacle diameter 2.018 .080 2.013 .079 BD Alignment receptacle depth 5.3 .21 BE Facial seal diameter centerline 14.02 .552 13.945 .549 BF Fac
12、ial seal protrusion from front housing 0.35 .013 0.1 .004 BG Front housing thread length 7.1 .280 6.9 .272 BH Insert outer diameter 13.34 .525 13.29 .523 BK Offset between connector mating face and front edge of outer housing +0.3 +.01 -0.3 -.01 BL Front housing flange recess diameter 15.6 .61 15.5
13、.61 BM Front housing threaded flange protrusion 7.1 .280 6.9 .272 BN Front housing flange recess depth 7.6 .299 7.3 .287 BO Threaded flange protrusion inside diameter 15.95 .628 15.80 .622 BP Lens surface recess depth from insert mating face 0.5 .020 0.35 .014 BS Insert mating face protrusion 0.65 0
14、.026 0.2 .008 BR Optical axis position tolerance See figure 4 feature control frame BV Flange corner 1 0.2 X 45 chamfer or 1 .2 rounded BW Flange chamfer depth 1.2 .05 0.8 .03 BX Front housing thread Tr 22.02 x 4 (P2) Modified external thread, in accordance with ISO 2903, Minor diameter: 20.14/20.04
15、 mm (.793/.789 inches) Major diameter: 22.02/21.92 mm (.867/.863 inches) Pitch diameter: 20.812/20.638 mm (.819/.812 inches) BZ Flange chamfer angle 15 3 1/ Dimensions are given in mm. NOTE; inch measurements are provided for reference and as a result of rounding inaccuracies could prevent Intermate
16、ability. 2/ Focal length is analytically derived through optical modeling (ZEMAX or equivalent). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83526/21B 7 Millimeter Inch 0.2 .0079 28 1.10 30 1.18 NOTES: 1. There is a rotational relationshi
17、p between D-flat and connector mating face as shown in figure 4. 2. Panel thickness: 6.5 mm (.25 inches) maximum to 3 mm (.11 inches) minimum. FIGURE 6. Recommended panel cutout Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83526/21B 8 REQU
18、IREMENTS: Dimensions required for intermateability: See figure 2 through figure 5 and table I and table II. Features not defined do not directly impact intermateability. Materials: See table III. All materials must meet nuclear, biological and chemical decontamination requirements described herein.
19、TABLE III. Materials. 1/ Part description Material Finish 2/ Insert body ARCAP AP1D or 303 SS Passivated when 303 SS is selected Alignment pin 316 stainless steel Passivated Facial seal Fluorosilicone rubber 3/ None Panel seal Fluorosilicone rubber 3/ None Front housing Aluminum 6082-T6, 6061- T6 or
20、 2042 as long as T3 or T4 is not used Teflon impregnated hard anodize or hard anodize; reference MIL-A-8625 type III 4/ Connector shell Aluminum 6082-T6, 6061- T6 or 2042 as long as T3 or T4 is not used Chromate conversion coated zinc in accordance with ASTM B633 over electroless nickel in accordanc
21、e with ASTM B733 5/ Jam nut Aluminum 6082-T6, 6061- T6 or 2042 as long as T3 or T4 is not used Chromate conversion coated zinc in accordance with ASTM B633 over electroless nickel in accordance with ASTM B733 5/ Protective cap 6/ Nylon, aluminium 6082-T6, 6061-T6 or 2042 as long as T3 or T4 is not u
22、sed For aluminum, hard anodize in accordance with MIL-A-8625 type III Lanyard Nylon over galvanized steel or stainless steel stranded wire N/A 1/ All materials and plating must meet material compatibility requirements of MIL-STD-889 for the connector body material. 2/ All finishes must meet the colo
23、r requirements and pass all environmental requirements. 3/ Material optional provided all performance requirements are met. 4/ Provided performance requirements are met 5/ .Non-reflective brown, non-reflective green, non-reflective black and non-reflective grey camouflage colors are acceptable. 6/ G
24、rip features are required on the coupling nut and protective cap and shall provide for sufficient hand grip to facilitate coupling and uncoupling. Epoxy: Epoxy is not furnished with the connector. When used, epoxy shall meet the requirements of MIL-DTL-83526. Cure according to manufacturers recommen
25、ded time and temperature profile. Threads: Applicable, except that the separable interface coupling mechanism shall employ a modified metric trapezoidal thread as detailed in figure 2 and table II. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-
26、DTL-83526/21B 9 Protective cap: Protective cap shall: a. Mate with the connector and with protective caps. b. Pass crush test when matted with a connector and when mated with another protective cap. Lanyard: Lanyard length to be minimum necessary to facilitate easy installation and removal of the pr
27、otective cap. Lanyard coating must meet nuclear, biological and chemical decontamination requirements as described herein. Termini: Termini are not exposed at the separable interface and may be unique in design between manufacturers provided all performance requirements are met. Cable service loop:
28、Provision for cable service loop is not required. Tools: Tools are not supplied with the connector, but shall be available from the manufacturer. Thread lubricant: Thread lubricants used in the construction of the connectors shall satisfy the following criteria: a. Lubricants shall be permanent and
29、shall not require replacement during the lifetime (see mating durability) of the connector. b. Lubricants shall not migrate to the optical interfaces resulting in the degradation of optical performance. c. Lubricants shall be useful over the environmental conditions specified herein. d. Lubricants s
30、hall not be affected by cleaning solvents. Wherever MIL-DTL-83526 specifies “change in insertion loss”, change in optical transmittance shall be measured and recorded. Qualification inspection insertion loss: Applicable except the average insertion loss for each individual channel for initial insert
31、ion loss shall be no greater than 1.5 dB for multimode and 2.0 dB for single mode. One average per channel shall be recorded. Under all conditions the maximum insertion loss shall be 2.0 dB for multimode and 2.5 dB for single mode. Discontinuities: Applicable, except testing shall be in accordance w
32、ith TIA-455-32 test condition A. A discontinuity shall be a reduction of strength of 0.5 dB or more for a duration of 1 s or more. Crosstalk: Applicable, except test in accordance with TIA-455-42, -60 dB maximum. Return loss: Applicable for single mode only. The return loss of any single mode mated
33、pair of connectors shall be not less than 31 dB for any channel and shall be not less than 34 dB for any unmated channel. Focal length: Focal length shall be analytically derived through optical modeling (ZEMAX or equivalent) and shall be within the limits specified in table IV. Provided by IHSNot f
34、or ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83526/21B 10 TABLE IV. Focal length Mode Focal length mm Min Max SM 1.5 1.7 MM 1.5 1.7 Weight: 300.5 grams (10.6 ounces) maximum. Color: Non-reflective brown, non-reflective green, non-reflective black and non-refl
35、ective grey camouflages are acceptable colors. Cadmium is not permitted. No color is specified for the insert. Identification marking: PIN construction: M 83526 / 21 - XX Military designator Basic specification Specification sheet Connector configuration, see table V TABLE V Connector configuration.
36、 83526/21-XX Channels Fiber cladding size Figure Wavelength 30 nm Mode -01 4 125 5 850/1,300 nm Multi -02 4 125 5 1,310 nm Single -03 4 125 5 1,550 nm Single -04 2 125 6 850/1,300 nm Multi -05 2 125 6 1,310 nm Single -06 2 125 6 1,550 nm Single PIN shall be applied to outer housing flange. Identify
37、channels on both ends of the inserts (see figure 3 and figure 5). Yellow Indicator band: Shall be applied to the exposed outside diameter of the connector outer housing in the area between the front edge and the jam nut threads. “Fiber-Optics” phrase: Shall be applied to the outer housing flange, si
38、de opposite from the PIN. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83526/21B 11 Channel location identification: Same as terminus location identification requirement, except location marking shall be adjacent to lens (see figure 3 and
39、figure 5). Lens cleaning: Each lens shall be cleaned in accordance with instructions supplied by the connector manufacturer. The lens shall not be removed from its operational position within the connector to facilitate cleaning. After cleaning, the identification marking requirements shall be met;
40、also the requirements of insertion loss shall be met before and after the test. Insert retention axial strength: Applicable with the exception that the force shall be applied to front (lens) side of insert only. The requirements of insertion loss shall be met after the test only. Insert retention ra
41、dial strength: Applicable with the exception that the torque of 3.4 N m (30 inch pounds) shall be applied between the shell body and the insert utilizing the guide pin and guide pin hole of the insert. The requirements of insertion loss shall be met after the test only. Terminus retention force: Not
42、 applicable. Terminus insertion and removal forces: Not applicable. Maintenance aging: Not applicable. Coupling force: 1 kg (2.2 pounds) maximum. Coupling torque: 5 N-m (44.3 inch-pounds) maximum. Temperature requirements: (Unless stated otherwise, tests are to be performed under worst case scenario
43、 (85 C). Temperature information below is for user): Operating temperature range: -46C to 71C (-51F to 160F). Transit temperature range: -54C to 71C (-65F to 160F). Storage temperature range: -57C to 85C (-70F to 185F). Temperature life: Applicable except the optical requirements apply before and af
44、ter the test only. Mating durability: Applicable except after 1,000 cycles, the connector shall show no defects detrimental to the operation of the connector and shall pass mating forces and coupling torques tests. After an additional 2,000 cycles, the connector shall pass the insertion loss test. I
45、nsertion loss shall be measured every 100 mating cycles during the test. Impact: Not applicable. Twist: Not applicable. Cable seal flexing: Not applicable. Cable retention: Not applicable. Crush resistance: Not applicable. Provided by IHSNot for ResaleNo reproduction or networking permitted without
46、license from IHS-,-,-MIL-DTL-83526/21B 12 External bending moment: Applicable, that the applied load shall be 30 N-m (22 lbf ft) and the application rate shall be 21 N (4.7 lbf) per second. The insertion loss of each optical path shall be measured before, during, and after the test. Thermal shock: A
47、pplicable, except test in accordance with TIA-455-71, schedule C for 10 cycles, with high and low test temperatures of +85C and -57C, respectively. Insertion loss shall be measured before and after test. Physical shock: Applicable, except test condition A shall be utilized. Salt spray: Applicable in
48、 accordance with TIA-455-16 test condition C. Connector shall be mounted in the outer wall of a sealed enclosure to prevent water exposure to the rear of the connector. Fungus resistance: Applicable in accordance with basic document (MIL-DTL-83526). Following the test, examination of the test samples shall reveal no evidence of deterioration of component parts or constituent materials that will adversely affect performance. Humidity: Applicable, except the connector r
