1、 REVISIONS LTR DESCRIPTION DATE APPROVED A Add pure tin prohibition paragraph. Extend maximum resistance range. Editorial changes throughout. 11 FEB 10 M. Radecki B Add an exception to the thermal shock test. Editorial changes throughout. 5 APR 12 M. Radecki C Correction to dimension tables. Editori
2、al changes throughout 23 AUG 12 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 C C C C C C C C PAGES 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 PMIC N/A PREPARED BY Andrew Ernst DESIGN ACTIVITY DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS,
3、OH Original date of drawing 28 February 2005 CHECKED BY Andrew Ernst TITLE RESISTOR, CHIP, FIXED, FILM, SURFACE MOUNT, 5 WATTS (UP TO 25 WATTS WITH HEATSINK) APPROVED BY Kendall Cottongim SIZE A CODE IDENT. NO. 037Z3 DWG NO. 04025 REV C PAGE 1 OF 15 AMSC N/A 5905-2012-E38 CURRENT DESIGN ACTIVITY CAG
4、E 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 SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 04025 REV C PAGE 2 1. SCOPE 1.1 Scop
5、e. This drawing describes the requirements for a fixed, film, surface mount, 5 watt (25 watts with a heatsink) power device. 1.2 Part or Identifying Number (PIN). The complete PIN is as follows: 04025 - * * * I I I I Drawing number Resistance value (see 3.3.3) Tolerance (see 3.3.4) Terminal finish (
6、see 3.3.1) 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed 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 ef
7、fort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents in sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. Th
8、e 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. DEPARTMENT OF DEFENSE STANDARDS MIL-STD-202 - Electronic and Electrical Compone
9、nts Parts. MIL-STD-1276 - Leads for Electronic Components Parts. (Copies of these documents are available online at https:/assist.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.3 Non-Government publications. The
10、following documents 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. NATIONAL CONFERENCE OF STANDARDS LABORATORIES (NCSL) NCSL Z540.3 - Laboratories, Calibration and Measuring, and
11、Test Equipment. (Copies of this document are available from http:/www.ncsli.org or from the National Conference of Standards Laboratories (NCSL) International, 1800 30thStreet, Suite 305, Boulder, CO 80301-1026.) 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event
12、 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 precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. Provid
13、ed 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. 04025 REV C PAGE 3 3. REQUIREMENTS 3.1 Item requirements. The individual item requirements shall be as specified herein. 3.2
14、Interface and physical dimensions. Resistors shall meet the interface and physical dimensions as specified herein (see figure 1) Dimensions A .398 .008 (10.109 0.203) J .020 .002 (0.508 0.050) S 1/ 0.630 (16.00) B .406 .008 (10.312 0.203) K .030 .002 (0.761 0.050) T 1/ 0.138 (3.50) C .177 .008 (4.49
15、5 0.203) L .059 .002 (1.498 0.050) U 1/ 0.200 (5.08) E .197 .039 (5.003 0.099) M .200 .004 (5.08 0.101) V 1/ 0.063 (1.60) F .098 .020 (2.489 0.508) N .059 .002 (1.498 0.050) B+E .602 .047 (15.290 1.193) G .087 .008 (2.209 0.203) P 1/ 0.433 (11.00) E-F .098 .039 (2.48 0.990) H .108 .008 (2.743 0.203)
16、 R 1/ 0.393 (10.00) 1/ Recommended minimum footprint dimension NOTES: 1. Dimensions are in inches. 2. Metric equivalents are in parenthesis and are given for general information only. 3. Dimensions do not include end flash, mold flash or material protrusions. FIGURE 1. Power resistor. Provided by IH
17、SNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 04025 REV C PAGE 4 3.3 Electrical characteristics. 3.3.1 Termination finish. Termination material shall be in accordance with MIL-STD
18、-1276 and table I TABLE I. Termination finish. Symbol Termination material. A C32 - Electroplated tin lead terminals. B C52 - Hot solder dipped terminals. 3.3.2 Pure tin. The use of pure tin, as an underplate or final finish is prohibited both internally and externally. Tin content of resistor compo
19、nents 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). 3.3.3 Resistance range. The resistance range shall be from 0.10 ohms to 51.1 kilohms. 3.3.3.1 Resistance. The nominal resistance identified by four digits; the first three
20、 digits represent significant figures and the last digit specifies the number of zeros to follow. When the value of resistance is less than 100 ohms, or when fractional values of an ohm are required, the letter “R” is substituted for the significant digits to represent the decimal point. When the le
21、tter “R” is used, succeeding digits of the group represent significant figures. The resistance value designations are shown in table II. Standard values for every decade follows the sequence demonstrated for 10 decade to 100 decade in table III Resistance values not listed in table III for the appro
22、priate resistance tolerance are considered as not conforming to the specification. Although resistance tolerances “J” and “K” normally require less than three significant figures to adequately describe the true resistance value, for the purpose of this specification, the nominal value is three signi
23、ficant figures followed by the fourth digit to signify the number of zeros to follow. TABLE II. Designation of resistance values for resistance-tolerances of 1.0 and 5.0 percent. Designation Resistance ohms R100 to R976 inclusive 0.10 to 0.976 inclusive 1R00 to 9R76 inclusive 1.00 to 9.76 inclusive
24、10R0 to 97R6 inclusive 10.0 to 97.6 inclusive 1000 to 9760 inclusive 100 to 976 inclusive 1001 to 9761 inclusive 1,000 to 9,760 inclusive 1002 to 5112 inclusive 10,000 to 51,100 inclusive 3.3.4 Resistance tolerance. Resistors are available in tolerances F (1.0 percent), and J (5.0 percent). 3.3.5 Te
25、mperature characteristics. Resistors are available with a temperature coefficient of 100 ppm. Resistance values below 10 ohm shall have a temperature coefficient of 200 ppm. 3.4 Power rating. The power rating shall be 5 watt at +25OC case temperature. For operation at temperature in excess of +25OC,
26、 derate in accordance with figure 2. With a heatsink the power rating can go up to 25 watts at +25OC case temperature (heatsink not provided in this document). 3.5 Voltage rating. The maximum continuous working voltage shall not exceed 300 volts, or square root of P x R. 3.6 Operating temperature. T
27、he operating temperature shall be -55OC to +150OC. 3.7 Dielectric strength. The dielectric strength shall be 1,500 V ac rms. 3.8 Thermal resistance. The internal thermal resistance shall be less than or equal to 5OC/W. Provided by IHSNot for ResaleNo reproduction or networking permitted without lice
28、nse from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 04025 REV C PAGE 5 3.9 Thermal shock. When resistors are tested as specified in 4.5.2, there shall be no evidence of mechanical damage; the change in resistance shall not exceed (0.5 percent +0.001 oh
29、m) for thermal shock and short time overload test combine. 3.10 Short time overload. When resistors are tested as specified in 4.5.3, there shall be no evidence of arcing, burning, or charring; the change in resistance shall not exceed (0.5 percent +0.001 ohm) for thermal shock and short time overlo
30、ad test combine. TABLE III. Standard resistance value for 10 to 100 decade. 1.0 5.0 1.0 5.0 1.0 5.0 1.0 5.0 1.0 5.0 10.00 10.00 16.90 27.00 42.20 64.90 10.20 17.40 27.40 43.00 66.50 10.50 17.80 28.00 43.20 68.00 10.70 18.00 28.70 44.20 68.10 11.00 11.00 18.20 29.40 45.30 69.80 11.30 18.70 30.00 46.4
31、0 71.50 11.50 19.10 30.10 47.00 73.20 11.80 19.60 30.90 47.50 75.00 12.00 20.00 20.00 31.60 48.70 75.00 12.10 20.50 32.40 49.90 76.80 12.40 21.00 33.00 51.00 78.70 12.70 21.50 33.20 51.10 80.60 13.00 13.00 22.00 34.00 52.30 82.00 13.30 22.10 34.80 53.60 82.50 13.70 22.60 35.70 54.90 84.50 14.00 23.2
32、0 36.00 56.00 86.60 14.30 23.70 36.50 56.20 88.70 14.70 24.00 37.40 57.60 90.90 15.00 15.00 24.30 38.30 59.00 91.00 15.40 24.90 39.00 60.40 93.10 15.80 25.50 39.20 61.90 95.30 16.20 26.10 40.20 62.00 97.60 16.50 26.70 41.20 63.40 3.11 DC resistance. When resistors are tested as specified in 4.5.4, t
33、he dc resistance shall be within the specified tolerance of the nominal resistance (see 3.3.3.1) for all products deliverable on the contract. 3.12 Solderability. When resistors are tested as specified in 4.5.5, they shall meet the criteria for wire-lead terminal evaluation in the test method. 3.13
34、Resistance temperature characteristic. When resistors are tested as specified in 4.5.6, the resistance temperature characteristic at each of the temperatures specified in table VII are referred to 25OC 5OC and resistance values shall be in accordance with 3.3.5. 3.14 Low temperature operation. When
35、resistors are tested as specified in 4.5.7, there shall be no evidence of mechanical damage. The change in resistance shall not exceed (0.25 percent +0.001 ohm). 3.15 Terminal strength. When resistors are tested as specified in 4.5.8, there shall be no evidence of breaking or loosening of terminals
36、from the resistor form, or chipping of coating, or other evidence of mechanical damage. The change in resistance shall not exceed (0.20 percent +0.001 ohm). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHI
37、O SIZE A CODE IDENT NO. 037Z3 DWG NO. 04025 REV C PAGE 6 3.16 Dielectric withstanding voltage. When resistors are tested as specified in 4.5.9, there shall be no evidence of flashover, mechanical damage, arching, or insulation breakdown. The change in resistance shall not exceed (0.25 percent +0.001
38、 ohm). 3.17Insulation resistance. When resistors are tested as specified in 4.5.10, the insulation resistance shall be not less than 10,000 megohms. NOTE: The curve indicated the percentage of nominal wattage that can be applied above 25OC that results in the same resistance film temperature. FIGURE
39、 2. Derating curve for various case temperatures. 3.18 Resistance to soldering heat. When resistors are tested as specified in 4.5.11, there shall be no evidence of mechanical damage. The change in resistance shall not exceed (0.25 percent +0.002 ohm). 3.19 Moisture resistance. When resistors are te
40、sted as specified in 4.5.12, there shall be no evidence of mechanical damage. The change in resistance shall not exceed (0.50 percent +0.001 ohm). In addition, the change in resistance due to dielectric withstanding voltage shall not exceed (0.25 percent +0.001 ohm), and the insulation resistance sh
41、all be 100 megohms minimum. 3.20 Shock (specified pulse). When resistors are tested as specified in 4.5.13, there shall be no evidence of mechanical or electrical damage. The change in resistance shall not exceed (0.25 percent +0.001 ohm). There shall be no electrical discontinuity during the test.
42、3.21 Vibration, high frequency. When resistors are tested as specified in 4.5.14, there shall be no evidence of mechanical damage. The change in resistance shall not exceed (0.20 percent +0.001 ohm). There shall be no electrical discontinuity during the test. 3.22 Life. When resistors are tested as
43、specified in 4.5.15, there shall be no evidence of mechanical damage. The change in resistance between the initial measurement and any of the succeeding measurements, up to and including 1,000 hours, shall not exceed (1.00 percent +0.001 ohm). 3.23 High temperature exposure. When resistors are teste
44、d as specified in 4.5.16, there shall be no evidence of mechanical damage. The change in resistance shall not exceed (1.0 percent +0.001 ohm). Following this test, the dielectric withstanding voltage shall be as specified in 3.16, and the insulation resistance shall be 1,000 megohms minimum. Percent
45、ofrated power-65 -50 -25 0 25 50 75 100 125 150 175 Temperature (OC) 100 80 60 40 20 0 70OC -55OC 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. 04025 REV C PAGE 7 3.
46、25 Marking. Resistors shall be marked with the PIN assigned herein (see 1.2) and manufacturers identification code (CAGE or logo), as shown in the following example: CAGE or Logo 04025 - Specification number * - Resistance, Tolerance, and terminal finish * - Date code 3.26 Recycled, recovered, or en
47、vironmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs. 3.27 Manuf
48、acturer eligibility. To be eligible for listing as an approved source of supply, a manufacturer shall perform the group A and group B inspections specified herein on a sample of parts agreed upon by the manufacturer and DLA Land and Maritime-VAT. 3.27.1 Certificate of compliance. A certificate of co
49、mpliance shall be required from manufacturers requesting to be an approved source of supply. 3.28 Workmanship. Resistors shall be uniform in quality and free from defects that will affect life, serviceability, or appearance. 4. VERIFICATION 4.1 Qualification inspection. Qualification inspection is not applicable to this document. 4.2 Conformanc
