DLA DSCC-DWG-93075 REV F-2006 RESISTOR FIXED WIREWOUND SURFACE MOUNT POWER TYPE (1 2 WATT)《固定线绕表面安装功率型(1 2瓦特)电阻器》.pdf
《DLA DSCC-DWG-93075 REV F-2006 RESISTOR FIXED WIREWOUND SURFACE MOUNT POWER TYPE (1 2 WATT)《固定线绕表面安装功率型(1 2瓦特)电阻器》.pdf》由会员分享,可在线阅读,更多相关《DLA DSCC-DWG-93075 REV F-2006 RESISTOR FIXED WIREWOUND SURFACE MOUNT POWER TYPE (1 2 WATT)《固定线绕表面安装功率型(1 2瓦特)电阻器》.pdf(6页珍藏版)》请在麦多课文档分享上搜索。
1、 REVISIONS LT DESCRIPTION DATE APPROVED A Changes in accordance with NOR 5905-R013-95. 21 Oct 1994 D. Moore B Changes in accordance with NOR 5905-R017-95. 30 Oct 1995 D. Moore C Changes to paragraphs 3.3.2, 3.3.3, 3.3.10, and 4.8. Deleted paragraph 3.3.6 Voltage rating. Editorial changes throughout.
2、 8 Jul 1997 D. Moore D Changes in accordance with NOR 5905-R001-98. 3 Apr 1998 D. Moore E Update and validation of drawing. Editorial changes throughout. 3 Dec 2003 K. Cottongim F Add pure tin prohibition paragraph. Editorial changes throughout. 30 Oct 2006 M. Radecki CURRENT DESIGN ACTIVITY CAGE CO
3、DE 037Z3 DEFENSE LOGISTICS AGENCY DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO 43218-3990 Prepared in accordance with AMSE Y14.100 Selected item drawing REV STATUS REV F F F F F F OF PAGES PAGES 1 2 3 4 5 6 PMIC N/A PREPARED BY HERALDINE JOHNSON DEDIGN ACTIVITY: DEFENSE ELECTRONIC SUPPLY CENTER DA
4、YTON, OHIO 45444-5000 Original date of drawing CHECKED BY ANDREW ERNST TITLE RESISTOR, FIXED, WIREWOUND, SURFACE MOUNT, POWER TYPE (1/2 WATT) 11 July 1994 APPROVED BY DAVID E. MOORE SIZE A CODE IDENT. NO. 14933 DWG NO. 93075 REV F PAGE 1 OF 6 AMSC N/A 5905-E629 Provided by IHSNot for ResaleNo reprod
5、uction or networking permitted without license from IHS-,-,-DEFENSE ELECTRONIC SUPPLY CENTER DAYTON, OHIO SIZE A CODE IDENT NO. 14933 DWG NO: 93075 REV F PAGE 2 1. SCOPE 1.1 Scope. This drawing describes the requirements for a 1/2 watt, fixed, surface mounted, wirewound, power type resistor. 1.2 Par
6、t or Identifying Number (PIN). The complete PIN is as follows: 93075 * * I I I Drawing Resistance value Tolerance number (see 3.3.1, 3.3.2) (see 3.3.3) 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards, and handbooks. The following specifications, standards, and handb
7、ooks 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. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-PRF-39007 - Resistors, Fixed, Wirewound (Power Type), Nonestablished Reliability, Esta
8、blished Reliability, and Space Level, General Specification for. DEPARTMENT OF DEFENSE STANDARDS MIL-STD-202 - Test Methods for Electronic and Electrical Component Parts. MIL-STD-690 - Failure Rate Sampling Plans and Procedures. MIL-STD-790 - Established Reliability and High Reliability Qualified Pr
9、oducts List (QPL) Systems for Electrical, Electronic, and Fiber Optic Parts Specifications. MIL-STD-1285 - Marking of Electrical and Electronic Parts. (Copies of these documents are available online at http:/assist.daps.dla.mil/quicksearch/ or http:/assist.daps.dla.mil/ or from the Standardization D
10、ocument Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.2 Order of precedence. 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, supersedes applicab
11、le 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. Resistors shall meet the interface and physical dim
12、ensions as specified in MIL-PRF-39007 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 A CODE IDENT NO. 14933 DWG NO: 93075 REV F PAGE 3 Dimensions A B C D E F G (4.77 .127)
13、 .188 .005 (5.08 .508) .200 .020 (1.02 .254) .040 .010 (2.44 .381) .096 .015 (2.29 .127) .090 .005 (3.18 .127) .125 .005 (1.27 .254) .050 .010 NOTES: 1. Dimensions are in inches, millimeters are in parentheses. 2. Inch equivalents are given for general information only. FIGURE 1. Resistor, fixed, wi
14、rewound, surface mount. 3.3 Electrical characteristics. 3.3.1 Resistance value designation. Resistance value designations shall be in accordance with MIL-PRF-39007. 3.3.2 Resistance. The resistance range shall be .1 ohm to 4.99 kilohms. 3.3.3 Resistance tolerance. Resistance tolerances are available
15、 in (D) 0.5 percent (for values above 1 ohm), (F) 1 percent, (H) 3 percent, and (J) 5 percent. 3.3.4 Power rating. The power rating shall be 1/2 watt at +70C. For operation at temperatures greater than +70C, derate in accordance with figure 2. 3.3.5 Resistance temperature coefficient. The resistance
16、 temperature coefficient shall be as follows: 0.1 ohm to 0.99 ohm-90 ppm/C 1.0 ohm to 9.9 ohm-50 ppm/C 3.3.6 Thermal shock. When resistors are tested as specified in 4.6, there shall be no evidence of mechanical damage. The maximum change in resistance shall not exceed (0.2 percent +0.05 ohm). 3.3.7
17、 Load life. When resistors are tested as specified in 4.7, there shall be no evidence of mechanical damage. The maximum change in resistance shall not exceed (0.5 percent +0.05 ohm). 3.3.8 Overload. When resistors are tested as specified in 4.8, there shall be no evidence of electrical or mechanical
18、 damage. The maximum change in resistance shall not exceed (0.2 percent + 0.005 ohm). 3.3.9 Solderability. The total surface area of the dipped part of the termination is at least 95 percent covered by a continuous new solder coating. Pin holes, voids, porosity, nonwetting, or dewetting shall not be
19、 concentrated in one area and shall not exceed 5 percent of the total termination area. The area of the surface to be tested shall include the total metallized areas of both terminations within .3125 inch (7.938 mm) of the bottom contact point of the “J“ bend. In case of a dispute, the percentage of
20、 coverage with pinholes or voids shall be determined by actual measurement of these areas, as compared to the total area. 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
21、: 93075 REV F PAGE 4 FIGURE 2. Derating curves for high ambient temperatures. 3.3.10 High temperature exposure. When resistors are tested as specified in 4.10, there shall be no evidence of mechanical damage. The maximum change in resistance shall not exceed (0.5 percent +0.05 ohm). 3.4 Marking. Mar
22、king shall be as shown: 93075 (DSCC drawing number) 1R00F (resistance value, and tolerance) XXXXX (CAGE 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 percent, b
23、y 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 or exceeds t
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