DLA DSCC-DWG-07011 REV C-2012 RESISTORS FIXED CURRENT SENSING METAL STRIP HIGH PRECISION SURFACE MOUNT STYLE 2512.pdf
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1、 REVISIONS LTR DESCRIPTION DATE APPROVED A Vendor requested changes to RTC and high temperature exposure 28 Aug 2007 M. Radecki B Vendor recommended changes. Current DoD requirements. Editorial requirements throughout 15 Sept 2009 M. Radecki C Vendor address change. Editorial changes throughout. 13
2、Sept 2012 M. Radecki Prepared in accordance with ASME Y14.100 Source control drawing REV STATUS OF PAGES REV C C C C C C C C PAGES 1 2 3 4 5 6 7 8 PMIC N/A PREPARED BY Jesus V. Garcia III DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OH Original date of drawing 09 August 2007 CHECKED BY Andrew R. Ernst
3、TITLE RESISTORS, FIXED, CURRENT SENSING, METAL STRIP, HIGH PRECISION, SURFACE MOUNT, STYLE 2512 APPROVED BY Michael A. Radecki SIZE A CODE IDENT. NO. 037Z3 DWG NO. 07011 REV C PAGE 1 OF 8 AMSC N/A 5905-2012-E07 CURRENT DESIGN ACTIVITY CAGE CODE 037Z3 HAS CHANGED NAMES TO: DLA LAND AND MARITIME COLUM
4、BUS, OHIO 43218-3990 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 07011 REV C PAGE 2 1. SCOPE 1.1 Scope. This drawing describes the requirements for a metal strip,
5、high precision, surface mount, current sensing, resistor, style 2512. 1.2 Part or Identifying Number (PIN). The complete PIN is as follows: 07011 - * * * Drawing number Resistance value (see 3.3.1) Tolerance (see 3.3.2) Resistance temperature characteristic (RTC) (see 3.3.3) 2. APPLICABLE DOCUMENTS
6、2.1 Government documents. 2.1.1 Specifications and standards. 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 listed in the cited in the solicitation or contract (se
7、e 6.2). DEPARTMENT OF DEFENSE SPECIFICATION MIL-PRF-49465 - Resistors, Fixed, Metal Element (Power Type), Very Low Resistance Values, General Specification for DEPARTMENT OF DEFENSE STANDARDS MIL-STD-202 - Test Method Standard, Electronic and Electrical Component Parts (Copies of these documents are
8、 available online at https:/assist.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, 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 docum
9、ent and the references cited herein (except for related specification sheets), the text of this document takes precedence 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 requ
10、irements. The individual item requirements shall be as specified herein. 3.2 Interface and physical dimensions. The interface and physical dimensions shall be as specified in MIL-PRF-49465 and herein (see figure 1). Passivation is not applicable, however, a protective coating over the element shall
11、be provided. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 07011 REV C PAGE 3 1/ Tolerance 0.015 (0.38) NOTES: 1. Dimensions are in Inches. Metric equivalents are gi
12、ven for general information only. 2. Tolerance is 0.010 (0.25mm), unless otherwise noted. 3. The pictorial view of the styles above is given as representative of the envelope of the item. Slight deviations from the outline shown, which are contained within the envelope and do not alter the functiona
13、l aspects of the device, are acceptable. FIGURE 1. Current sensing resistor. Resistance range Dimensions (mm) T L W H A 1/ B 1/ .003 to .005 0.083 (2.11) 0.25 (6.4) 0.125 (3.18) 0.025 (0.64) 0.030 (0.76) 0.025 (0.64) .005 to .007 0.047 (1.19) .007 to .200 0.032 (0.81) Provided by IHSNot for ResaleNo
14、 reproduction or networking permitted without license from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 07011 REV C PAGE 4 3.3 Electrical characteristics 3.3.1 Resistance. The nominal resistance expressed in ohms is identified by five digits. The letter
15、“R” is substituted for one of the significant digits to represent the decimal point. The succeeding digits of the group represent the significant figures in table I. TABLE I. Designation of resistance values. Designation Resistance (in ohms) 0R0030 to 0R2000 incl. .003 to .200 Incl. 3.3.1.1 Minimum
16、and maximum resistance value. The minimum and maximum resistance values are as specified below. Minimum - .003 ohms Maximum - .200 ohms 3.3.2 Resistance tolerance. Resistors are available in resistance tolerances as specified in table II. TABLE II. Resistance tolerance. Symbol Resistance tolerance p
17、ercent B 1/ C 1/ D F 0.1 0.25 0.5 1.0 1/ Inactive for new design 3.3.3 Resistance temperature characteristic. The resistance temperature characteristic as specified in table III (see 4.4). TABLE III. Resistance temperature characteristic (RTC). Symbol Resistance temperature characteristic (RTC) in p
18、pm/OC Blank 1/ 15 A 20 1/ Inactive for new design Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 07011 REV C PAGE 5 3.3.4 Power rating. The power rating is 1 watt at
19、70OC derated to +170OC at zero power (see figure 2). FIGURE 2. Derating curve. 3.3.5 Current rating. The maximum current rating shall not exceed 18 Amps. 3.3.6 Termination. The termination material shall be Tin/Lead (see 3.3.6.1). 3.3.6.1 Pure tin. The use of pure tin, as an underplate or final fini
20、sh, 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). 3.4 Thermal shock. When resistors are tested as specified in MIL-PRF-49465 for thermal shock
21、 the change in resistance shall not exceed 0.2 percent +0.0005 ohm. 3.5 Resistance temperature characteristic. When resistors are tested as specified in MIL-PRF-49465 the RTC shall not exceed the values specified (see 3.3.3). 3.6 Low temperature storage. When resistors are tested as specified in MIL
22、-PRF-49465 for low temperature operation the change in resistance shall not exceed 0.2 percent +0.0005 ohm. 3.7 Short time overload. When resistors are tested as specified in MIL-PRF-49465 for short time overload the change in resistance shall not exceed 0.5 percent +0.0005 ohm. 3.8 Moisture resista
23、nce. When resistors are tested as specified in MIL-PRF-49465 for moisture resistance the change in resistance shall not exceed 0.1 percent +0.0005 ohm. 3.9 Shock, specified pulse. When resistors are tested as specified in MIL-PRF-49465 for shock the change in resistance shall not exceed 0.1 percent
24、+0.0005 ohm. 3.10 Vibration, high frequency. When resistors are tested as specified in MIL-PRF-49465 for vibration the change in resistance shall not exceed 0.1 percent +0.0005 ohm. 3.11 Life. When resistors are tested as specified in MIL-PRF-49465 for life the change in resistance shall not exceed
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