1、 REVISIONS LTR DESCRIPTION DATE APPROVED Prepared in accordance with ASME Y14.100 Source control drawing REV STATUS OF PAGES REV PAGES 1 2 3 4 5 6 PMIC N/A PREPARED BY Andrew R. Ernst DESIGN ACTIVITY DLA LAND AND MARITIME COLUMBUS, OH 43218-3990 Original date of drawing 15 October 2010 CHECKED BY An
2、drew R. Ernst TITLE RESISTOR, CURRENT SENSE, OPEN AIR, METAL ALLOY STRIP, 5 WATTS APPROVED BY Michael A. Radecki SIZE A CODE IDENT. NO. 037Z3 DWG NO. 10010 REV PAGE 1 OF 6 AMSC N/A 5905-E732 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DLA LAND AN
3、D MARITIME COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 10010 REV PAGE 2 1. SCOPE 1.1 Scope. This drawing describes the requirements for an open air, metal alloy strip, current sense, 5 watt resistor. 1.2 Part or Identifying Number (PIN). The complete PIN is as shown in the following example:
4、10010- R0250 F | | | | | | Drawing number Resistance (see 3.3.1) Tolerance (see 3.3.2) 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 cited in other sections of this specificat
5、ion 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 must meet all specified requirements of documents in sections 3 and 4 of this specification, whether or not they are listed.
6、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 extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. DEP
7、ARTMENT OF DEFENSE SPECIFICATIONS MIL-PRF-39007 - Resistors, Fixed, Wire Wound (Power Type), Nonestablished Reliability, Established Reliability and Space Level, General Specification for. DEPARTMENT OF DEFENSE STANDARDS MIL-STD-690 - Failure Rate Sampling Plans and Procedures. MIL-STD-790 - Establi
8、shed Reliability and High Reliability Qualified Products List (QPL) Systems for Electrical, Electronic, and Fiber Optic Parts Specifications. (Copies of these documents are available online at https:/assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue
9、, Building 4D, Philadelphia, PA 19111-5094.) 2.3 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, superse
10、des applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Item requirements. The individual item requirements shall be in accordance with MIL-PRF-39007, and as specified herein. 3.2 Interface and physical dimensions. The resistor shall meet the interface
11、and physical dimensions as specified in herein (see figure 1). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DLA LAND AND MARITIME COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 10010 REV PAGE 3 Ltr Inches mm Min Max Min Max L 3/ .425 .470 10.7
12、0 12.00 H 3/ .090 .180 2.28 4.57 T .083 1.003 2.11 25.48 D .160 .220 4.06 5.59 W .235 .265 5.97 6.73 NOTES: 1. Dimensions are in inches. 2. Millimeter equivalents are given for general information only. 3. Resistance dependent. FIGURE 1. Open air, current sense resistor. 3.3 Electrical characteristi
13、cs. 3.3.1 Resistance The nominal resistance expressed in ohms is identified by five digits; an “R” shall be used to represent the decimal point. The succeeding digits of the group represent significant figures. The resistance value designations are shown in table I. TABLE I. Resistance value designa
14、tions. Designation Resistance ohms R0010 to R0050 inclusive R0100 to R0250 inclusive 0.0010 to 0.0050 inclusive 0.0100 to 0.0250 inclusive Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DLA LAND AND MARITIME COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z
15、3 DWG NO. 10010 REV PAGE 4 3.3.2 Resistance values. Resistance values are as specified in table II. TABLE II. Resistance values. Resistance values (m) 1, 2.5, 5, 10, 15, 20, 25 3.3.3 Resistance tolerance. Resistors are available in resistance tolerances of (F) 1 percent; and (J) 5 percent. 3.3.4 Res
16、istance temperature characteristic. The resistance temperature characteristic shall not exceed the value listed in table III. Note: The resistance temperature characteristic is based on the metal alloy and copper termination and will vary slightly due to mounting methods and resistance range of the
17、product. Values depicted are calculated and are less than the values indicated. TABLE III. Maximum resistance temperature characteristic. Resistance (milliohms) Parts/million/C (ppm) 1 2 and above 240 40 3.3.5 Power rating. The power rating shall be 5 watt at 70C. For temperatures in excess of +70C
18、shall be derated in accordance with figure 2. 3.3.6 Inductance. Resistors shall have an inductance of less the 10 nanohenries. 3.3.7 Operating temperature. Resistors shall have an operating temperature of -40C to +125C. FIGURE 2. Derating curve for high ambient temperatures. Provided by IHSNot for R
19、esaleNo reproduction or networking permitted without license from IHS-,-,-DLA LAND AND MARITIME COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 10010 REV PAGE 5 3.4 Marking. Resistors shall be marked with the resistance value and tolerance only due to size limitations. Each unit package shall be
20、marked with PIN assigned herein (see 1.2) and manufacturers identification code (CAGE or logo), date code, and lot code. 3.5 Pure tin. The use of pure tin, as an underplate or final finish is prohibited both internally and externally. Tin content of resistor components and solder shall not exceed 97
21、 percent, by mass. Tin shall be alloyed with a minimum of 3 percent lead, by mass (see 6.3). 3.6 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 o
22、r exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs. 3.7 Manufacturer eligibility. To be eligible for listing as an approved source of supply, a manufacturer shall be listed on the MIL-PRF-39007 Qualified Products List for at least one part
23、, or perform the group A and group B inspections specified herein on a sample agreed upon by the manufacturer and DLA Land and Maritime-VA. 3.7.1 Certificate of compliance. A certificate of compliance shall be required from manufacturers requesting to be an approved source of supply. 3.8 Workmanship
24、. Resistors shall be uniform in quality and free from defects that will affect life, serviceability, or appearance. 4. VERIFICATIONS 4.1 Product assurance program. The product assurance program specified in MIL-PRF-39007 and maintained in accordance with MIL-STD-790 is not applicable to this documen
25、t. 4.2 Product level qualification. The product level qualification specified in MIL-PRF-39007 and MIL-STD-690 is not applicable to this document. 4.3 Conformance provisions. 4.3.1 Inspection of product for delivery. Inspection of product for delivery shall consist of group A inspection (ER inspecti
26、on only) of MIL-PRF-39007. 4.3.2 Group A inspection. Group A inspection (ER inspection only) shall be in accordance with MIL-PRF-39007 (Subgroup 1 shall consist of DC resistance only, this testing is completed through machine automation. Test data can be supplied on sampling bases in accordance with
27、 table XIII (subgroup 2) of MIL-PRF-39007 (see 6.2d). 5. PACKAGING 5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or order (see 6.2). When packaging of materiel is to be performed by DoD or in-house contractor personnel, these personnel need
28、 to contact the responsible packaging activity to ascertain packaging requirements. Packaging requirements are maintained by the Inventory Control Points packaging activity within the Military Department or Defense Agency, or within the military services system commands. Packaging data retrieval is
29、available from the managing Military Departments or Defense Agencys automated packaging files, CD-ROM products, or by contacting the responsible packaging activity. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DLA LAND AND MARITIME COLUMBUS, OHIO
30、SIZE A CODE IDENT NO. 037Z3 DWG NO. 10010 REV PAGE 6 6. NOTES (This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.) 6.1 Intended use. Resistors are intended for use in dc amplifiers, voltmeter multipliers, electronic computers, meters, and
31、laboratory test equipment. 6.2 Ordering data. The contract or purchase order will specify the following: a. Complete PIN (see 1.2). b. Requirements for delivery: One copy of the conformance inspection data that parts have passed conformance inspection, with each shipment of parts by the manufacturer
32、. c. Tape and reel or bulk packaging requirements (see 5.1). d. Whether the manufacturer performs the group A dc resistance sampling (see 4.3.2). 6.3 Tin whisker growth. The use of alloys with tin content greater than 97 percent, by mass, may exhibit tin whisker growth problems after manufacture. Ti
33、n whiskers may occur anytime from a day to years after manufacture and can develop under typical operating conditions, on products that use such materials. Conformal coatings applied over top of a whisker-prone surface will not prevent the formation of tin whiskers. Alloys of 3 percent lead, by mass
34、, have shown to inhibit the growth of tin whiskers. For additional information on this matter, refer to ASTM-B545 (Standard Specification for Electrodeposited Coatings of Tin). 6.4 User of record. Coordination of this document for future revisions is coordinated only with the approved source of supp
35、ly and the users of record of this document. Requests to be added as a recorded user of this drawing may be achieved online at resistordla.mil or in writing to: DLA Land and Maritime-VAT, Post Office Box 3990, Columbus, OH 43218-3990 or by telephone (614) 692-0552 or DSN 850-0552. 6.5 Approved sourc
36、e of supply. Approved source of supply is listed herein. Additional sources will be added as they become available. Assistance in the use of this drawing may be obtained online at resistordla.mil or contact DLA Land and Maritime-VAT, Post Office Box 3990, Columbus, OH 43218-3990 or by telephone (614
37、) 692-0552 or DSN 850-0552. DLA Land and Maritime drawing PIN Vendor similar designation or type number 1/ Vendor CAGE Vendor name and address 10010-* OARS XP 11502 International Resistive Company, INC 736 Greenway Road Boone, NC 28607-4830 1/ Parts must be purchased to the DLA Land and Maritime PIN to assure that all performance requirements and tests are met. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
