1、Comments, suggestions, or questions on this document should be addressed to: Defense Supply Center, Columbus, ATTN: DSCC-VAT, Post Office Box 3990, Columbus, Ohio 43218-3990 or by email Resistordla.mil. Since contact information can change, you may want to verify the currency of this address informa
2、tion using the ASSIST Online database at http:/assist.daps.dla.mil/ . AMSC N/A FSC 5905 INCH-POUND MIL-PRF-39035/1E 2 April 2008 SUPERSEDING MIL-PRF-39035/1D 12 February 1998 PERFORMANCE SPECIFICATION RESISTORS, VARIABLE, NONWIREWOUND (ADJUSTMENT TYPE, LEAD-SCREW ACTUATED), NONESTABLISHED RELIABILIT
3、Y, AND ESTABLISHED RELIABILITY STYLE RJR12 Inactive for new design after 12 February 1998. This specification 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 MI
4、L-PRF-39035. 1. SCOPE 1.1 Scope. This specification covers the requirements for style RJR12, nonestablished reliability, and established reliability, adjustment type, lead-screw actuated, nonwirewound, variable resistors. This style is available in characteristic C, F, and H. 1.2 Part or Identifying
5、 Number (PIN). Resistors covered by this specification must be identified by a PIN which consists of a basis style of this specification and a coded number. The PIN is in the following form: RJR12 FP102M Specification style number Coded number 2. APPLICABLE DOCUMENTS 2.1 General. The documents liste
6、d 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 specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, documen
7、t 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. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-39035/1E 22.2 Government documents
8、. 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 (see 6.2). DEPARTMENT OF DEF
9、ENSE SPECIFICATION MIL-PRF-39035 - Resistors, Variable, Nonwirewound (Adjustment Type), Nonestablished Reliability, and Established Reliability, General Specification for (Copies of these documents are available online at http:/assist.daps.dla.mil/quicksearch/ or http:/assist.daps.dla.mil or from th
10、e Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094). 2.3 Order of precedence. 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 this document takes prece
11、dence. 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 acquiring the product described herein shall consist of this document and MIL-PRF-39035. 3.2 Interface and physical di
12、mension requirements. Resistors shall meet the interface and physical dimensions specified on figure 1. 3.3 Power rating. The power rating shall be 3/4 watt. 3.4 Terminals. All characteristics are available with L- and Y- type terminals. 3.5 Nominal resistance value and maximum rated ac or dc workin
13、g voltage. Nominal resistance values and maximum rated ac or dc working voltages shall be as specified in table I. 3.5.1 Resistance value deviations. All maximum deviations as specified in this section are to be considered absolute limits with the exception of the contact resistance adjustments. 3.6
14、 Actual effective electrical travel. Actual effective electrical travel shall be 17 turns minimum, and 27 turns maximum. 3.7 Operating torque. Operating torque shall be a maximum of 8 ounces-inches. 3.8 Maximum voltage. Maximum rated ac or dc working voltage shall be 300 volts. 3.9 Pure tin. The use
15、 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 percent, by mass. Tin shall be alloyed with a minimum of 3 percent lead, by mass (see 6.3). 3.10 Weight. The weight is .159 ounces (4.5 gram
16、s). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-39035/1E 3Inches mm Inches mm Inches mm Inches mm Inches mm Inches mm .002 0.05 .025 0.64 .058 1.47 .105 2.67 .190 4.83 .500 12.70 .010 0.25 .028 0.71 .063 1.60 .115 2.92 .250 6.35 .700 17.7
17、8 .015 0.38 .031 0.79 .093 2.36 .125 3.18 .300 7.62 1.000 25.40 .022 0.56 .052 1.32 .100 2.54 .135 3.43 .315 8.00 1.250 31.75 NOTES: 1. Dimensions are in inches. Metric equivalents are given for general information only. 2. Unless otherwise specified, tolerance is .005 (0.13 mm). 3. The three leads
18、shall be insulated wire, AWG size 28 to 30, having a minimum length of 6 inches (152.4 mm); they shall be insulated with polytetrafluoroethylene, stripped .250 .062 (6.35 1.57 mm) from the end and color coded. 4. The picturization of the styles above are given as representative of the envelope of th
19、e item. Slight deviations from the outline shown, which are contained within the envelope, and do not alter the functional aspects of the device are acceptable. 5. Terminal Y case shall meet all dimension requirements as shown for terminal L case, except as noted. FIGURE 1. Style RJR12 resistors. Pr
20、ovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-39035/1E 44. VERIFICATION 4.1 Sampling and inspection. Sampling and inspection shall be in accordance with MIL-PRF-39035. 4.2 Visual and mechanical inspection. Visual and mechanical inspection sha
21、ll be in accordance with MIL-PRF-39035. 4.3 Dielectric withstanding voltage. The magnitude of test voltage shall be 900 volts for all characteristics at atmospheric pressure, and 350 volts for all characteristics at reduced barometric pressure. TABLE I. Nominal resistance value and maximum rated ac
22、or dc working voltage. Nominal resistance value (in Ohms) Maximum rated ac or dc working voltage per characteristics C, F, and H Nominal resistance value (in Ohms) Maximum rated ac or dc working voltage per characteristics C, F, and H 10 2.73 20,000 122 20 3.8 25,000 136 50 6.1 50,000 194 100 8.7 20
23、0 12.3 megohms 500 19.4 0.10 274 1,000 27.4 0.20 300 2,000 38.7 0.25 300 5,000 61.3 0.50 300 10,000 86.7 1.00 300 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 b
24、y DoD or in-house contractor personnel, these personnel need to contact the responsible packaging activity to ascertain packaging requirements. Packaging requirements are maintained by the Inventory Control Points packaging activity within the Military Service or Defense Agency, or within the milita
25、ry services system commands. Packaging data retrieval is available from the managing Military 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
26、that may be helpful, but not mandatory.) 6.1 Intended use. The notes specified in MIL-PRF-39035 are applicable to this specification. 6.2 Acquisition requirements. Acquisition documents must specify the following: a. Title, number, and date of this specification, and the complete PIN (see 1.2). b. I
27、f not otherwise specified (see 2.1), the versions of the individual documents referenced will be those in effect on the date of release of the solicitation. c. Packaging instructions (see 5.1). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-
28、39035/1E 56.3 Tin whisker growth. The use of alloys with tin content greater than 97 percent, by mass, may exhibit tin whisker growth problems after manufacture. Tin whiskers may occur anytime from a day to years after manufacture and can develop under typical operating conditions, on products that
29、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, have shown to inhibit the growth of tin whiskers. For additional information on this matter, refer to ASTM-B545 (Standard Specificatio
30、n for Electrodeposited Coatings of Tin). 6.4 Environmentally preferable material. Environmentally preferable materials should be used to the maximum extent possible to meet the requirements of this specification. As of the dating of this document, the U.S. Environmentally Protection Agency (EPA) is
31、focusing efforts on reducing 31 priority chemicals. The list of chemicals is available on their website at http:/www.epa.gov/epaoswer/hazwaste/minimize/chemlist.htm. Further information is available at the following EPA site: http:/www.epa.gov/epaoswer/hazwaste/minimize/. Included in the EPA list of
32、 31 priority chemicals are cadmium, lead, and mercury. Use of the materials on the list should be minimized or eliminated unless needed to meet the requirements specified herein (see section 3). 6.5 Changes from previous issue. The margins of this specification are marked with vertical lines to indi
33、cate 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 contractors are cautioned to evaluate the requirements of this document based on the entire content irresp
34、ective of the marginal notations and relationship to the last previous issue. Custodians: Preparing activity: Army - CR DLA - CC Navy - EC Air Force - 11 DLA - CC Review activities: (Project 5905-2008-037) Army - AR, AT, AV, CR4, MI Navy - AS, MC, OS Air Force - 19, 99 NOTE: The activities listed ab
35、ove 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. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
