1、3-39- I3 MIL-T-55631 AMENDMENT 2 SUPERSEDING 12 JULY 1982 AMENDMENT 1 24 October 1974 MIL-T-55631 MILITARY SPECIFICATION TRANSFORMERS; INTERMEDIATE FREQUENCY, RADIO FREQUENCY AND DISCRIMINATOR, GENERAL SPECIFICATION FOR This amendment forms a part of Military Specification MIL-T-55631 dated 17 April
2、 1972, and is approved for use by all Departments and Agencies of the Department of Defense. PAGE 1 Identification block, delete and.substitute: I MIL-T-55631 17 April 1972 SUPERSEDING MIL-C-1 5305C IN-PART 18 October 1962 (see 6.5)“ PAGES 1 AND 2 * 2.1 and 2.2, delete and substitute the following:
3、“2.1 Government specifications and standards. Unless otherwise specified, the following specifications and standards, of the issue listed in that issue of the Department of Defense Index of Specifications and Standards specified in the solicitation, form a part of this specification to the extent sp
4、ecified herein.“ SPECIFICATIONS FEDERAL J-W-1177 QQ-S-571 QQ-S-781 PPP-B-566 PPP-B-585 PPP-B-601 - PPP-B-621 PPP-B-636 PPP-B-676 - Wire, Magnet, Electrical. - Solder, Tin Alloy: Tin-Lead Alloy; and Lead Alloy, - Strapping, Steel, and Seal s. - Boxes, Folding, Paperboard. - Boxes, Wood, Wirebound. -
5、Boxes, Wood, Cleated-Plywood. - Boxes, Wood, Nailed and Lock-Corner. - Boxes , S hipping , Fi berboard. - Boxes, Setup. MILITARY MIL-P-116 - Preservation, Methods of. MIL-P-14256 - Flux, Soldering, Liquid (Rosin Base). STANDARDS FEDERAL FED-STD-H28 - Screw-Thread Standards for Federal Services. aU.S
6、.GOVERNMENTPRlNTlNGOFFICE:1982-505-029/3781 FSC 5950 / -. - Page 1 of 6 .l Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-5563L (2) 57 m 779770b 0076487 T m MIL-T-55631 AMENDMENT 2 MILITARY MIL-STD-105 MIL-STD-129 MIL-STD-147 MIL-STD-202 MIL-S
7、TD-275 MIL-STD-794 MIL-STD-810 MIL-STD-1276 MIL-STD-1285 MIL-STD-45662 - Sampling Procedures and Tables for Inspection by Attributes. - Marking for Shipment and Storage. - Palletized Unit Loads. - Test Methods for Electronic and Electrical Component Parts. - Printed Wiring for Electronic Equipment.
8、- Parts and Equipment, Procedures for Packaging and Packing. - Environmental Test Methods. - Leads for Electronic Component Parts. - Marking of Electrical and Electronic Parts. - Calibration Systems Requirements. (Copies of specifications, standards, handbooks, drawings, and publications required by
9、 manufacturers in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting officer.) “2.2 Order of precedence. In the event of a conflict between the text of this specification and the references cited herein, the text of this
10、specification shall take precedence.“ PAGE 3 3.3.2, delete and substitute: “3.3.2 Solder and soldering flux, Solder and soldering flux, when used, shall be in accordance with QQ-S-571 and MIL-F-14256 respectively. It * 3.3.3, delete “MIL-W-583“ and substitute “J-W-1177.“ * 3.4.1, line 2: Delete “Han
11、dbook H28“ and substitute “FED-STD-H28.“ * 3.4.3.2, line 2: Delete “type C“ and substitute “composition Cl and final finish 4“. PAGE 5 3.12, delete and substitute: “3.12 Solderability. When transformers are tested as specified in 4.7.9, they shall meet the applicable criteria for terminal evaluation
12、 in the test method.“ 3.16, after “Resistance to soldering heat,“ delete “(when applicable see 3.1 and 6.1).“ PAGE 7 3.28, delete and substitute: “3.28 Workmanship. Transformers shall be processed in such a manner as to be uniform in quality and shall meet the requirements of 3.3, 3.4, and 3.27, as
13、applicable, and shall be free of defects that will afftect life, serviceability or appearance.“ * 4.1.1, line 5: Delete MIL-C-45662“ and substitute “MIL-STD-45662.“ * TABLE II, Applicable document column, deTete and substiute as follows: Delete Substitute “MIL-STD-454 QQ-S-571, MIL-F-14256 MIL-W-583
14、 J-W-1 177“ 2 F- , Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-55631 AMENDMENT 2 PAGE 8 Table III, Group II: After “Solderability,“ delete “(when applicable).“ Table III, Group IV: After “Resistance to soldering heat,“ delete “(when applica
15、ble).“ PAGE 11 Table VI, Subgroup 1: After “Solderability,“ delete “(when applicable).“ Table VI, Subgroup 3: After “Reisitance to soldering heat,“ delete “(when applicable).“ PAGE 12 * 4.6.3, delete and substitute the following: “4.6.3 Inspection of packaging. The sampling and inspection of the pre
16、servation and interior package marking shall be in accordance with the group A and B quality conformance inspection requirements of MIL-P-116. The sampling and inspection of the packing and marking for shipment and storage shall be in accordance with the quality assurance provisions of the applicabl
17、e container specification and the marking requirements of MIL-STD-129.“ PAGE 15 4.7.6.3, after paragraph title add the following in parenthesis, “(when specified, for ferrite- core units only). 4.7.6.3, delete last two sentences and substitute the following: “The inductance of the transformer under
18、test shall be determined and recorded with zero dc current in the transformer. The specified value of incremental current shall be applied through the transformer and this inductance measurement recorded. The change in inductance between the two values shall be less than five percent.“ PAGE 19 4.7.8
19、, third sentence, delete and substitute the following: “The tuning core shall be rotated for eight cycles (from maximum core extension to minimum and return to maximum position is one complete cycle) while not exceeding the maximum or minimum torque specified (see 3.1 and 6.1).“ 4.7.9, delete and su
20、bstitute: “4.7.9 Solderability (see 3.12). Transformers shall be tested in accordance with 4.7.9.1 or 4.7.9.2 as applicable (see 3.1 and 6.1). The method in 4.7.9.1 is preferred and shall be specified whenever practicable; otherwise the method in 4.7.9.2 shall be used.“ PAGE 20 4.7.13, after “Resist
21、ance to soldering heat,“ delete “(when applicable, see 3.1 and 6.1).“ 4.7.13.2, after paragraph title add the following under 4.7.9.1).“ in parenthesis: PAGE 23 4.7.17.1(a), delete and substitute: “(not required when performed “(a) Method of mounting - Transformers shall be securely fastened by thei
22、r norma means (see 3;l and 6.1).“ 1 mounting 3 -, .-. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-55631 AMENDMENT 2 PAGES 25 AND 26 Section 5, delete in its entirety and substitute a new Section 5 as printed on pages 5 and 6 of this amendme
23、nt. PAGE 27 Add new paragraph as follows: “6.5 Supersession data. The intermediate and radio-frequency transformers formerly covered by MIL-C-15305C are now covered by this specification.“ The margins of this amendment are marked with an asterisk to indicate where changes (additions, modi- fications
24、, corrections, deletions) from the previous amendment 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 this document based on the entire con
25、tent irrespective of the marginal notations and relationship to the last previous amendment, Custodians: Army - ER Navy - EC Air Force - 85 Review activities: Navy - SH, OS Air Force - 11, 17, 99 Amy - MI DLA - ES User activities: Army - AR, WC, ME Navy - MC, AS Air Force - 19 Agent: DLA - ES Prepar
26、ing activity: (Project 5950-0605) Army - ER Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-“5. PACKAGING “5.1 Preservation. Preservation sha “5.1.1 Level A. 11 be level A or C, as specified (see 6.1). “5.1.1.1 Cleaning. Transformers sha process C-l.
27、 l.5.1.1.2 Drying. Transformers shall 11 be cleaned in accordance with MIL-P-116, be dried in accordance with MIL-P-116. - NIL-T-5563L (2) 57 W 7777706 0076470 T W MIL-T-55631 AMENDMENT 2 /I -, “5.1.1.3 Preservative application. Preservatives shall not be used. “5.1.1.4 Unit acks. Each transformer s
28、hall be individually unit packed in accordance wit t e methods of MIL-P-116 specified herein insuring compliance with the applicable requirements of that specification. “5.1.1.4.1 Hermetically sealed transformers. Hermetically sealed transformers shall be unit packed in accordance with method III. “
29、5.1.1.4.2 Nonhermetically sealed transformers. Nonhermetically sealed transformers shall be preserved in accordance with submethod IA-8. Each unit pack exceeding 15 cubic inches shall be placed in a supplementary container conforming to PPP-B-566 or PPP-B-676. “5.1.1.5 Intermediate packs. Transforme
30、rs, unit packed in bags or envelopes as specified in 5.1.1.4, shall be placed in intermediate containers conforming to PPP-B-566 or PPP-B-676 or PPP-B-636. Intermediate containers shall be uniform in size, shape and quantities, shall be of minimum tare and cube and shall contain multiples of five un
31、it packs, not to exceed 100 unit packs. No intermediate packs are required when the total quantity shipped to a single destination is less than 100 unit packs or when supplementary containers are used. “5.1.2 Level C. The level C preservation for transformers shall conform to the MIL-STD-794 require
32、ments for thi S 1 evel. “5.2 Packing. Packing shall be level A, B or C, as specified (see 6.1). “5.2.1 Level A. The packaged transformers shall be packed in fiberboard contain- ers conforming to PPP-B-636, class weather resistant, style optional, special requirements. The requirements for box closur
33、e, waterproofing and reinforcing shall be in accordance with method V of the PPP-B-636 appendix. “5.2.2 Level B. The packaged transformers shall be packed in fiberboard contain- ers conforming to PPP-6-636, class domestic, style optional, special requirements. Closures shall be in accordance with th
34、e appendix thereto. “5.2.3 Level C. The level C packing for transformers shall conform to the the MIL-STD-794 requirements for thi s 1 evel. “5.3 Marking. In addition to any special or other identification marking required by the contract (see 6.11, each unit pack, intermediate, supplementary and ex
35、terior container shall be marked in accordance with MIL-STD-129. “5.4 General. “5.4.1 Exterior containers. Exterior- containers (see 5.2.1, 5.2.2 and 5.2.3) shall be of a minimum tare and cube consistent with the protection required and shall contain equal quantities of identical stock numbered item
36、s to the greatest extent practicable. “5.4.2 Packaging inspection. The inspection of these packaging requirements shall be in accordance with 4.6.3. “5.4.3 Army acquisitions 5 - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-55631 (2) 57 W 777
37、7706 00761)71 1 MI L-T-55631 AMENDMENT 2 “5.4.3.1- Level A intermediate packs. All unit, supplementary and intermediate containers shall be either weather (or water) resi stant or overwrapped with waterproof barrier materials (see 5.1.1.4, 5.1.1.4.2 and 5.1.1.5) “5.4,3.2 Level A and Level B packing.
38、 For level A packing, the fiberboard containers shall not be banded but shall be placed in a close fitting box conforming to PPP-B-601, overseas type; PPP-B-621, class 2, style 4 or PPP-B-585, class 3, style 2 or 3. Closure and strapping shall be in accordance with applicable container specification
39、 except that metal strapping shall conform to QQ-S-781, type !, finish A. When the gross weight exceeds 200 pounds or the container length and width is 48 or more and the weight exceeds 100 pounds, 3 x 4 inch skids (laid flat) 1 i x 24 inches shall be app If not descr manner which ha ndl i ng equ as
40、 specified i ied in accordance with the requirements of the container specification. bed in the container specification, the skids shall be applied in a will adequately support the item and facilitate the use of material pment. For level B packing, fiberboard boxes shall be weather resistant in level A and the containers shall be banded (see 5.2.1 and 5.2.21. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
