1、 REVISIONS LTR DESCRIPTION DATE APPROVED A Dimension changes. Revise 3.3.7. Editorial changes throughout. 28 AUG 89 D. Moore B Dimension changes to figures. Revised 3.3.3. Editorial changes throughout. 13 NOV 90 D. Moore C Revise section 4. Editorial changes throughout. 2 MAR 92 D. Moore D Dimension
2、 changes to figures. Revised 4.4.1 and 4.4.1.2. Changed vendor PIN. Editorial changes throughout. 21 APR 93 D. Moore E Changes in accordance with NOR 5905-R002-96 28 MAR 96 D. Moore F Update and validation of drawing. Editorial changes throughout. 8 JUN 01 K. Cottongim G Add pure tin prohibition par
3、agraph. Editorial changes throughout. 8 JAN 08 M. Radecki H Vendor address change. Editorial changes throughout. 17 May 13 M. Radecki Prepared in accordance with ASME Y14.100 REV STATUS OF PAGES REV H H H H H H PAGES 1 2 3 4 5 6 PMIC N/A Original date of drawing 8 March 1988 PREPARED BY Allan R. Kno
4、x DESIGN ACTIVITY: DEFENSE ELECTRONIC SUPPLY CENTER DAYTON, OHIO 45444-5000 CHECKED BY David W. Withrow TITLE RESISTOR, VARIABLE, NONWIRE-WOUND (ADJUSTMENT TYPE, LEAD SCREW ACTUATED) APPROVED BY David E. Moore SIZE A CODE IDENT. NO. 14933 DWG NO. 87126 REV H PAGE 1 OF 6 AMSC N/A 5905-2012-E12 CURREN
5、T DESIGN ACTIVITY CAGE CODE 037Z3 HAS CHANGED NAMES TO: DLA LAND AND MARITIME COLUMBUS, OHIO 43218-3990 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DEFENSE ELECTRONIC SUPPLY CENTER DAYTON, OHIO SIZE A CODE IDENT NO. 14933 DWG NO. 87126 REV H PAGE
6、 2 1. SCOPE 1.1 Scope. This drawing describes the requirements for a variable, nonwire-wound (adjustment type, lead screw actuated) resistor. 1.2 Part or Identifying Number (PIN). The complete PIN is as follows: 87126 - * * Drawing Number Termination (see 3.3.5) Dash number (see table I) 2. APPLICAB
7、LE DOCUMENTS 2.1 Government documents. 2.1.1 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
8、contract. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-PRF-39035 - Resistors, Variable, Nonwire Wound (Adjustment Type), Nonestablished Reliability and Established Reliability, General Specification for. DEPARTMENT OF DEFENSE STANDARDS MIL-STD-690 - Failure Rate Sampling Plans and Procedures. MIL-STD-79
9、0 - Standard Practice for Established 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 http:/quicksearch.dla.mil or from the DLA Document Services, 700 Robbins A
10、venue, Building 4D, Philadelphia, PA 19111-5094). 2.2 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 (except for related specification sheets), the text of this document takes precede
11、nce unless otherwise noted. Nothing in this document, however, supersedes 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-39035 and as specified herein. 3.2 Inte
12、rface, and physical dimensions. The resistor shall meet the interface, and physical dimensions as specified in MIL-PRF-39035 and herein (see figure 1). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DEFENSE ELECTRONIC SUPPLY CENTER DAYTON, OHIO SIZE
13、 A CODE IDENT NO. 14933 DWG NO. 87126 REV H PAGE 3 FIGURE 1. Dimensions and configurations. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DEFENSE ELECTRONIC SUPPLY CENTER DAYTON, OHIO SIZE A CODE IDENT NO. 14933 DWG NO. 87126 REV H PAGE 4 Inches mm
14、 Inches mm Inches mm Inches mm Inches mm Inches mm Inches mm .002 0.05 .015 0.38 .020 0.51 .035 0.88 .075 1.90 .115 2.92 .172 4.37 .005 0.12 .017 0.43 .025 0.64 .040 1.02 .080 2.03 .125 3.18 .175 4.44 .010 0.25 .018 0.46 .030 0.76 .055 1.40 .100 2.54 .165 4.19 .250 6.35 NOTES: 1. Dimensions are in i
15、nches. 2. Metric equivalents are given for general information. 3. Unless otherwise specified, tolerance is .005 (0.13 mm). 4. The entire slot of the actuating screw must be above the surface of the unit. 5. The head of the lead screw actuator shall not extend beyond any edge of the surface upon whi
16、ch it is mounted. 6. Mounting means are by use of pins only. 7. The PIN is preferred as indicated; however, the PIN may be placed on any surface except where the leads egress. FIGURE 1. Dimensions and configurations - Continued. 3.3 Electrical characteristics. 3.3.1 Nominal resistance value and maxi
17、mum rated ac or dc working voltage. Nominal resistance values and maximum rated ac or dc working voltages are as specified in table I. 3.3.2 Power rating. The power rating shall be .250 watt. 3.3.3 Actual effective electrical travel. Actual effective electrical travel shall be 21 2 turns. 3.3.4 Oper
18、ating torque. The operating torque shall be 3 ounce-inches maximum. 3.3.5 Terminals. Resistors are available in P, W, and X terminals. 3.3.6 Maximum voltage. The maximum rated ac or dc working voltage shall be 200 volts. Provided by IHSNot for ResaleNo reproduction or networking permitted without li
19、cense from IHS-,-,-DEFENSE ELECTRONIC SUPPLY CENTER DAYTON, OHIO SIZE A CODE IDENT NO. 14933 DWG NO. 87126 REV H PAGE 5 3.3.7 Resistance temperature coefficient. Resistance temperature coefficient shall not exceed 10 ppm/OC for dash numbers 3 through 10. For dash numbers 1 and 2, the resistance temp
20、erature coefficient shall be 20 ppm/OC. TABLE I. Nominal resistance value and maximum rated ac or dc working voltage. Dash number 87126- Nominal resistance value (ohms) Maximum rated ac or dc working voltage per characteristic (volts) Dash number 87126- Nominal resistance value (ohms) Maximum rated
21、ac or dc working voltage per characteristic (volts) 01 10 1.58 06 500 11.1 02 20 2.23 07 1,000 15.8 03 50 3.54 08 2,000 22.3 04 100 5.0 09 5,000 35.4 05 200 7.07 10 10,000 50.0 3.4 Pure tin. The use of pure tin, as an underplate or final finish is prohibited both internally and externally. Tin conte
22、nt 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). 3.5 Marking. Resistors shall be marked with the PIN assigned herein (see 1.2) and manufacturers identification code (CAGE or logo). Pin 1 indicator sha
23、ll be located adjacent to pin 1. 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 materials meet or exceed the operational and maintenance requirements, and p
24、romote economically advantageous life cycle costs. 3.7 Manufacturer eligibility. To be eligible for listing as an approved source of supply, a manufacturer shall perform the group A specified herein on a sample of parts agreed upon by the manufacturer and DLA Land and Maritime-VAT. 3.7.1 Certificate
25、 of compliance. A certificate of compliance shall be required from manufacturers requesting to be an approved source of supply. 3.8 Workmanship. Resistors shall be processed in such a manner as to be uniform in quality and free from defects that will affect life, serviceability, or appearance. 4. VE
26、RIFICATION 4.1 Reliability assurance provisions. The reliability assurance provisions specified in MIL-PRF-39035 and maintained in accordance with MIL-STD-790 is not applicable to this document. 4.2 Qualification inspection. Qualification inspection in accordance with MIL-PRF-39035 is not applicable
27、 to this document. 4.3 Failure rate qualification. Failure rate qualification in accordance with MIL-PRF-39035 and MIL-STD-690 is not applicable to this document. 4.4 Conformance inspection. 4.4.1 Inspection of product for delivery. Inspection of product for delivery shall be in accordance with grou
28、p A inspection of MIL-PRF-39035. 4.4.2 Dielectric withstanding voltage. In the dielectric withstanding voltage test, the applied potential shall be 600 V rms at atmospheric pressure and 250 V rms at reduced barometric pressure. 4.4.3 High temperature exposure. The maximum temperature for the high te
29、mperature exposure test shall be 125OC. 4.5 Inspection of packaging. Inspection of packaging shall be in accordance with MIL-PRF-39035. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DEFENSE ELECTRONIC SUPPLY CENTER DAYTON, OHIO SIZE A CODE IDENT NO
30、. 14933 DWG NO. 87126 REV H PAGE 6 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 to contact the res
31、ponsible packaging activity to ascertain requisite packaging requirements. Packaging requirements are maintained by the Inventory Control Points packaging activity within the Military Department or Defense Agency, or within the Military Departments Services System Command. Packaging data retrieval i
32、s 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 that may be helpful, but is not mandatory.) 6.1 Intend
33、ed use. Resistor covered by this document are intended for use in electronic equipment, and are used for matching, balancing, and adjusting circuit variables in computers, telemetering equipment, and other critical applications. 6.2 Ordering data. The contract or purchase order should specify the fo
34、llowing: a. Complete PIN (see 1.2). b. Requirements for delivery: One copy of the conformance inspection data or a certificate of compliance that parts have passed conformance inspection with each shipment of parts by the manufacturer. c. Requirements for packaging and packing. 6.3 Tin whisker growt
35、h. 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 use such materials. Conformal c
36、oatings 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 Specification for Electrodeposited Coatings
37、 of Tin). 6.4 User of record. Coordination of this document for future revisions is coordinated only with the approved source of supply 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 La
38、nd and Maritime, ATTN: VAT, P.O. Box 3990, Columbus, OH 43218-3990 or by telephone (614) 692-8754 or DSN 850-8754. 6.5 Approved source 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 obtain
39、ed online at resistordla.mil or contact DLA Land and Maritime, ATTN: VAT, P.O. Box 3990, Columbus, OH 43218-3990 or by telephone (614) 692-8754 or DSN 850-8754. DLA Land and Maritime drawing PIN 87126 Vendors similar designation or type number 1/ Vendor CAGE Vendors name and address -P01 through -P1
40、0 1240P S8016 Vishay Precision Group, Inc. 3 Great Valley Parkway Suite 150 Malvern, PA 19355 Plants: Vishay Advanced Technologies, Ltd. 2 Haofan street Holon 58125, Israel -W01 through -W10 1240W3 -X01 through -X10 1240X3 1/ Parts must be purchased to the DLA Land and Maritime PIN to assure that all performance requirements and test are met Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
