1、Comments, suggestions, or questions on this document shall be addressed to Defense Logistics Agency - Aviation, ATTN: DLA-Aviation VEB, 8000 Jefferson Davis Highway, Richmond, VA 23297-5616 or e-mailed to stdznmgtdla.mil. Since contact information can change, you may want to verify the currency of t
2、his address information using the ASSIST database at https:/assist.dla.mil/. AMSC N/A FSC 6210 MIL-DTL-3661D 19 November 2013 SUPERSEDING MIL-DTL-3661C 10 JUNE 2003 DETAIL SPECIFICATION LAMPHOLDERS, INDICATOR LIGHTS, INDICATOR LIGHT HOUSINGS, AND INDICATOR LIGHT LENSES, GENERAL SPECIFICATION FOR Thi
3、s specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the general requirements for lampholders, indicator lights, indicator-light housings, and indicator-light lenses including display and integral lamp driver
4、network types and associated hardware. For the purpose of this specification, an indicator-light housing is an indicator light without a lens (see 6.5). 1.2 Classification. 1.2.1 Type designation of lampholders and indicator-light housings. The type designation of lampholders and indicator-light hou
5、sings will be in the following form, and as specified (see 3.2 and 6.2): LH79 /1 Style Type (1.2.1.1) (1.2.1.2) 1.2.1.1 Style. The style is identified by a two-letter symbol “LH” followed by a two digit number. 1.2.1.2 Type. The applicable types based on circuit or mechanical parameters are identifi
6、ed by one or more digit numbers. The numbers will follow and be separated from the style number by a slash mark. INCH-POUND Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-3661D 2 1.2.2 Type designation of lenses. The type designation of lens
7、es will be in the following form, and as specified (see 3.2 and 6.2): LC23 B D 3 Style Color Transmittance Lens material (1.2.2.1) (1.2.2.2) (1.2.2.3) (1.2.2.4) 1.2.2.1 Style. The style is identified by a two-letter symbol “LC” followed by a two digit number. 1.2.2.2 Color. The color of the lens wil
8、l be identified by a single letter in accordance with table I (see 3.4.9.2). TABLE I. Color. Symbol Color B1 Blue C Colorless (clear) (D and N transmittance only). G1 Green (identification). R Red (identification). E Red (aviation). W White (aviation) (T transmittance only). Y Yellow (aviation). D B
9、lack (opaque). S Gray (opaque). 1Not recommended for used with neon lamps. 1.2.2.3 Transmittance. The lens transmittance will be identified by a single letter in accordance with table II. TABLE II. Transmittance. Symbol Transmittance D1 Diffusing2 N Nondiffusing T1 Translucent3 O1 Opaque4 B1 Translu
10、cent/black overlay5 1Not recommended for used with neon lamps. 2In these lenses diffusion will be accomplished only by the surface closest to the lamp. 3In these lenses the diffusing media will be dispersed throughout the transmitting plastic material. 4In these lenses no light will be transmitted o
11、r reflected. 5Lens, prior to black overlay, will be translucent. Exterior viewing portion of the lens excluding any legend(s) will be covered with a black lusterless finish. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-3661D 3 1.2.2.4 Mate
12、rial. The lens material will be identified by a one-digit number in accordance with table III (see 3.2). TABLE III. Lens Material. Symbol Material 2 Plastic (-55C. to +71C.) 3 Plastic (-55C. to +125C.) 1.2.3 Type designation of indicator lights (non-replaceable lens type). The type designation for i
13、ndicator lights with non-removable lens and nomenclature display types will be in the following form and as specified (see 3.2 and 6.2): LHC82 /1 BT2 Style Type (1.2.2.2 (1.2.3.1) (1.2.1.2) To 1.2.2.4) 1.2.3.1 Style. The style is identified by a three-letter symbol “LHC” followed by a two-digit numb
14、er. 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 in other sections of this specification or recommended for additional information or as examples. While every effort has been
15、 made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements 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
16、 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 listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in t
17、he solicitation (see 6.2). INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO) ISO10012 Measurement management systems Requirements for measurement processes and measuring Equipment First Edition AENOR UNE-EN ISO/IEC 17025 Conformity assessment. General requirements for the competence of testing an
18、d calibration laboratories (Copy of this document is available from www.iso.org or the International Organization for Standardization American National Standards Institute, 11 West 42nd Street, 13th Floor, New York, NY 10036, United States.) FEDERAL STANDARDS FED-STD-3 - Colors, Aeronautical Lightin
19、g FED-STD-595/36231 Gray, Flat or Lusterless FED-STD-595/37038 Black, Flat or Lusterless (Copies of these documents are available online at http:/quicksearch.dla.mil/) COMMERCIAL ITEM DESCRIPTION Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DT
20、L-3661D 4 A-A-59588 Rubber, Silicone DEPARTMENT OF DEFENSE SPECIFICATION MIL-DTL-5541 Chemical Conversion Coatings on Aluminum and Aluminum Alloys MIL-A-8625 - Anodic Coatings for Aluminum and Aluminum Alloys MS18235 - Lamp, Cartridge, Short Cylindrical, Plug-In, Incandescent, Plastic (Flat Lens Typ
21、e) MS18236 - Lamp, Cartridge, Stovepipe, Plug In, Neon, Plastic (Curved Lens Type) MS18237 - Lamp, Cartridge, Long Cylindrical, Plug-In, Neon, Plastic (Flat Lens Type) MS18238 - Lamp, Cartridge, Short Cylindrical, Plug-In, Incandescent, Glass (Flat Type) DEPARTMENT OF DEFENSE STANDARDS MIL-STD-108 -
22、 Definitions of and Basic Requirements for Enclosures for Electric and Electronic Equipment MIL-STD-130 - Identification Marking of U.S. Military Property MIL-STD-202 Test Method Standard Electronic and Electrical Component Parts MIL-STD-1285 - Marking of Electrical and Electronic Parts MIL-STD-1916
23、 - DoD Preferred Methods for Acceptance of Product (Copies of these documents are available online at http:/quicksearch.dla.mil/) 2.3 Non-Government publications. The following document forms a part of this specification to the extent specified herein. Unless otherwise specified, the issues of the d
24、ocuments which are DoD adopted are those listed in the issue of the DODISS specified in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation or contract. (see 6.2). AMERICAN SOCIETY FOR TESTING AND MA
25、TERIALS (ASTM) ASTM B121/B121M - Standard Specification for Leaded Brass Plate, Sheet, Strip, and Rolled Bar ASTM D635 - Standard Test Method for Rate of Burning and /or Extent and Time of Burning of Plastics in a Horizontal Position ASTM D4066 - Standard Classification System for Nylon Injection an
26、d Extrusion Materials (PA) (Copies of these documents are available from www.astm.org or the American Society for Testing and Materials, 100 Barr Harbor Drive, W. Conshohocken, PA 19428-2959.) SOCIETY OF AUTOMOTIVE ENGINEERS (SAE) SAE-AS18012 - Markings for Aircrew Station Displays, Design and Confi
27、guration of SAE-AS25050 - Colors, Aeronautical Lights and Lighting Equipment, General Requirements For (Application for copies should be addressed to the Society of Automotive Engineers, Inc., 400 Commonwealth Drive, Warrendale, PA 15096-0001.) 2.4 Order of precedence. Unless otherwise noted herein
28、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 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-3661D 5 this document take
29、s precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First Article. When specified (see 6.2), a sample shall be subjected to first article inspection in accordance with 4.3. 3.2 Specification sh
30、eets. The individual lampholders, indicator lights, indicator-light housings and lens requirements shall be as specified herein and in accordance with the applicable specification sheets. In the event of any conflict between the requirements of this specification and the applicable specification she
31、ets, the latter shall govern. 3.3 Materials. 3.3.1 General Requirements. Materials used in the manufacture of lampholders, indicator lights, indicator-light housings and lenses, shall be as specified herein and in the applicable specification sheet. However, when a definite material is not specified
32、, a material shall be used which will enable the aforementioned items to meet the performance requirements of this specification. Acceptance or approval of any constituent material shall not be construed as a guarantee of the acceptance of the finished product. 3.3.2 Recycled, recovered, environment
33、ally preferable, or biobased materials. Recycled, recovered, environmentally preferable, or biobased 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 co
34、sts. 3.3.3 Metal and finishes. 3.3.3.1 Metals. All metal parts, other than current-carrying parts, shall be of a corrosion-resistant material or shall be suitably plated to resist corrosion. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-366
35、1D 6 3.3.3.2 Finishes. 3.3.3.2.1 Exterior. The exterior surfaces, designed to be exposed at the front of the panel after assembly, shall have a black lusterless finish. 3.3.3.2.2 Aluminum (only). Unless otherwise specified (see 3.2), all external aluminum parts shall be anodized in accordance with M
36、IL-A-8625 and all internal aluminum parts shall be chemically treated in accordance with MIL-DTL-5541. 3.3.4 Dissimilar metals. When dissimilar metals are used in intimate contact with each other, protection against electrolysis and corrosion shall be provided. The use of dissimilar metals in contac
37、t, which tend toward active electrolytic corrosion (particularly brass, copper, or steel used in contact with aluminum or aluminum alloy), is not acceptable. However, metal plating or metal spraying of dissimilar base metals to provide similar or suitable abutting surfaces is permitted. The use of d
38、issimilar metals separated by a suitable insulating material is also permitted. Dissimilar metals are defined in 6.3. 3.3.5 Plastic material (not applicable for lenses). Cotton base laminations, cotton, or cellulose-filled molding material shall not be used. 3.3.5.1 Thermoplastics. Unless otherwise
39、specified (see 3.2), thermoplastics shall not be used for fabricating indicator light housings and lampholder bases. When used for internal insulation the thermoplastic material shall be in accordance with Group 02 of ASTM D4066, or shall be of a high temperature polycarbonate material which is self
40、-extinguishing when tested in accordance with ASTM D635. 3.3.6 Silicone rubber. Silicone rubber shall be in accordance with A-A-59588 when used as an “O” ring for external sealing devices. 3.4 Design and construction. Lampholders, indicator lights, indicator-light housings and lenses shall be so con
41、structed as to insure proper operation when mounted in any position and shall conform to the design, construction, and physical dimensions as specified (see 3.2). 3.4.1 Mounting hardware. All mounting hardware shall be as specified (see 3.2) and need not be assembled when being furnished for inclusi
42、on in production equipment. For direct Government procurement, all mounting hardware shall be assembled to the lampholder in the order specified (see 3.2) or, shall be included in the unit package with the lampholder. 3.4.2 Terminals. The terminal design shall be as specified (see 3.2). 3.4.2.1 Sold
43、er terminals (when applicable). Solder terminals shall be designed to accept two wire leads, AWG #20, per terminal unless otherwise specified (see 3.2) and shall be treated to facilitate soldering. 3.4.2.2 Screw terminals (when applcable). Screw terminals shall be provided with hardware, as specifie
44、d (see 3.2). 3.4.2.3 Terminal identification. Lampholders, indicator lights and indicator-light housings, designed to accommodate neon lamps, shall be marked with a plus (+) sign at the terminal which is electrically connected to the center contact of the lamp used. Provided by IHSNot for ResaleNo r
45、eproduction or networking permitted without license from IHS-,-,-MIL-DTL-3661D 7 3.4.3 Screw threads. Screw threads on externally threaded parts, or parts subject to replacement or removal, shall be in accordance with Handbook H28. Threading of non-metallic parts will not be permitted unless otherwi
46、se specified on the specification sheet (see 3.2). 3.4.4 Anti-rotational means. Lampholders, indicator lights and indicator-light housings shall be designed with an anti-rotational mounting means. 3.4.5 Panel accommodation. Unless otherwise specified (see 3.2), indicator lights and indicator-light h
47、ousings shall be designed to accommodate panels up to .187-inch in thickness using applicable mounting hardware furnished. Mounting flanges shall be of the fixed type. 3.4.6 Current-limiting resistors. Current-limiting resistors used for neon indicator lights and housings shall have a tolerance not
48、to exceed 20 percent and the applicable ohmic value shall be as specified (see 3.2). The resistor shall be physically located internally to the indicator light or indicator-light housing. 3.4.7 Press-to-test operation. When specified (see 3.2), the light shall be such that the lamp may be tested by
49、pressing on the lens of the assembly. When the pressure is released, the test circuit to the lamp shall be opened and the lens assembly shall return to its normal position. 3.4.8 Lamp circuitry. Lampholders, indicator lights, and indicator-light housings shall be designed with an electrically isolated lamp circuit. 3.4.8.1 Lamp accommodation
