1、 INCH-POUND MIL-PRF-39007/5J 17 October 2008 SUPERSEDING MIL-PRF-39007/5H 3 July 1997 PERFORMANCE SPECIFICATION RESISTOR, FIXED, WIRE-WOUND (POWER TYPE), NONESTABLISHED RELIABILITY, ESTABLISHED RELIABILITY, AND SPACE LEVEL STYLE RWR71 Inactive for new design after 30 October 1985 (see 6.3) This spec
2、ification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the product described herein shall consist of this specification sheet and MIL-PRF-39007. 1. SCOPE 1.1 Scope. This specification covers the associated requirements for style RWR
3、71, nonestablished reliability, established reliability, and space level, power type, wire-wound, fixed, resistor. These resistors are available with terminal types “S“ (solderable, inductively wound), “W“ (weldable, inductively wound), “N“ (solderable, noninductively wound), and “Z“ (weldable, noni
4、nductively wound). 1.2 Part or Identifying Number (PIN). Resistors covered by this specification are identified by a PIN which consists of the style designation, terminal and winding, coded resistive value, tolerance, and product level designator. The PIN is derived in accordance with MIL-PRF-39007
5、and is in the following form: RWR71 S 1000 F S Style Terminal wire and winding Resistance Resistance tolerance Product level designator Comments, suggestions, or questions on this document should be addressed to US Army Communications-Electronics FDEC, ATTN: AMSRD-CER-PR-D, Fort Monmouth, NJ 07703-5
6、201 or emailed to Jeffery.carverus.army.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at http:/assist.daps.dla.mil. AMSC N/A FSC 5905 DISTRIBUTION STATEMENT A. Approved for public release; distribution is u
7、nlimited. Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-39007/5J 22. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 a
8、nd 4 of this specification. This section does not include documents cited in other sections of this specification 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 s
9、pecified requirements of documents cited in sections 3 and 4 of this specification, whether or not they are listed. * 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 s
10、pecified, the issues of these documents are those cited in the solicitation or contract. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-PRF-39007 - Resistors, Fixed, Wire Wound (Power Type), Nonestablished Reliability, Established Reliability, and Space Level, General Specification for. * (Copies of these
11、 documents are available online at http:/assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) * 2.3 Order of precedence. Unless otherwise noted herein or in the event of a conflict between the text of this do
12、cument and the references cited herein (except for related specification sheets), the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 General. The requirements for
13、 acquiring the product described herein shall consist of this document and MIL-PRF-39007. 3.2 Interface and physical dimension. The resistor shall meet the interface and physical dimensions specified on figure 1. 3.2.1 Noninductive windings. Noninductively wound resistors shall be identified by term
14、inal designation N to indicate a solderable terminal and Z to indicate a weldable terminal. 3.3 Minimum resistance value for all terminations (S, W, N, Z). For inductively wound and noninductively wound resistors, the minimum resistance value shall be 0.1 ohm. For resistance tolerance B (.1 percent)
15、 minimum resistance value shall be .499 ohm. 3.4 Maximum resistance value for S and W (inductively wound). For resistors having inductive characteristic S and W designation, the maximum resistance value shall be 16,200 ohms. 3.5 Maximum resistance value for N and Z type resistors. For resistors hav
16、ing noninductive characteristic N and Z designation, the maximum resistance value shall be 8,060 ohms. * 3.6 Resistance temperature characteristic. The resistance temperature characteristic is resistance depended and is as specified in table I. Copyright Communications - Electronics Command Provided
17、 by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-39007/5J 3* Table I. Resistance temperature characteristic. Resistance range (ohms) Resistance temperature characteristic (Reference to 25C) 0.1R0.499 0.499R1.0 1.0R10 10R73.2 73
18、2R 650 ppm 400 ppm 50 ppm 30 ppm 20 ppm Inches mm .002 0.05 .016 0.41 .031 0.79 .032 0.81 .062 1.57 .187 4.75 .812 20.62 1.500 38.10 Standard Dimensions style A .062 B (min) C .002 D .031 RWR71 .812 1.500 .032 .187 NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general info
19、rmation only. 3. Dimension A is clean lead to clean lead. 4. Lead concentric tolerance is to be measured at the point of lead egress from the resistor body to be within .016 TIR. FIGURE 1. Style RWR71 resistor. Copyright Communications - Electronics Command Provided by IHS under license with CRAINot
20、 for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-39007/5J 43.7 Power rating. The power rating shall be 2 watts at +25C. 3.8 Weight. The maximum weight shall be .00662 pound (3 grams); for N type resistors the maximum weight shall be .00882 pound (4 grams). 3.9
21、Terminal lead types. This style resistor is available in both solderable (S and N) and weldable (W and Z) leads. 4. VERIFICATION 4.1 Sampling and inspection. Sampling and inspection shall be in accordance with MIL-PRF-39007. 4.2 Short-time overload. The duration of applied voltage shall be 5 seconds
22、 Voltage applied shall be equivalent to 5 times rated wattage. 4.3 Dielectric withstanding voltage. 4.3.1 Atmospheric pressure. The magnitude of test voltage shall be 1,000 volts rms. 4.3.2 Barometric pressure (reduced). The test voltage shall be 200 volts rms. 4.4 Terminal strength. The applied fo
23、rce shall be 10 pounds. 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 material is to be performed by DoD or in-house contractor personnel, these personnel need to contact the responsible
24、packaging activity to ascertain packaging requirements. Packaging requirements are maintained by the Inventory Control Points packaging activities within the Military Service or Defense Agency, or within the military services system commands. Packaging data retrieval is available from the managing M
25、ilitary Departments or Defense Agencys automated packaging files, CD-ROM products, or by contacting the responsible packaging activity. 6. NOTES (This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.) 6.1 Notes. In addition to the notes speci
26、fied herein, the notes specified in MIL-PRF-39007 are applicable to this specification. Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-39007/5J 56.2 Acquisition requireme
27、nts. Acquisition documents must specify the following: a. Title, number, and date of this specification, the applicable associated specification, and the complete PIN (see 1.2). * b. Unless otherwise specified (see 2.1), the versions of the individual documents referenced will be those in effect on
28、the date of release of the solicitation. c. Packaging requirements (see 5.1). 6.3 Authorized use. The resistors specified herein are not for use in design after 30 October 1985. They are authorized for use in design contracts effective prior to 30 October 1985, to support existing military equipment
29、 * 6.4 Changes from previous issue. The margins of this specification are marked with asterisks to indicate where changes from the previous issue were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and co
30、ntractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations, and relationship to the last previous issue. Custodians: Preparing activity: Army - CR Army - CR Navy - EC Air Force - 85 Agent: NASA - NA DLA - CC Review activit
31、ies: Army - AR, MI (Project 5905-2007-044) Navy - AS, CG, MC, OS Air Force - 19 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 http:/assist.daps.dla.mil. Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
