1、 REVISIONS LTR DESCRIPTION DATE APPROVED A Vendor requested changes. Editorial changes throughout. 9 JUN 09 M. Radecki B Changes to paragraph 3.3.1 16 DEC 09 M. Radecki Prepared in accordance with ASME Y14.100 Source control drawing REV STATUS OF PAGES REV B B B B B B B PAGES 1 2 3 4 5 6 7 PMIC N/A
2、PREPARED BY Andrew R. Ernst DESIGN ACTIVITY: DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO Original date of drawing 15 August 2006 CHECKED BY Andrew R. Ernst TITLE RESISTOR, CHIP, FIXED, POWER METAL STRIP, SURFACE MOUNT, LOW VALUE (1.0 WATT), STYLE 2512 APPROVED BY Michael A. Radecki SIZE A CODE ID
3、ENT. NO. 037Z3 DWG NO. 06011 REV B PAGE 1 OF 7 AMSC N/A 5905-E734 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: 06011 REV B PAGE 2 1. SCOPE 1.1 Scope1.2 . This drawi
4、ng describes the requirements for a fixed, power metal strip, surface mounted, 1.0 watt, chip resistor, style 2512. Part or Identifying Number (PIN)06011 . The complete PIN is as follows: - * * I I I I I I Drawing Resistance value Tolerance number (see 3.3.1, 3.3.2) (see 3.3.3) 2. APPLICABLE DOCUMEN
5、TS 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 effort has been made to ensure the
6、 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. The following specifications, stan
7、dards, 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 SPECIFICATIONS MIL-PRF-55342 - Resistors, Chip, Fixed, Film, Nonestablished Reliability,
8、Established Reliability, Space Level, General Specification for. DEPARTMENT OF DEFENSE STANDARDS MIL-STD-690 - Failure Rate Sampling Plans and Procedures. MIL-STD-790 - Established Reliability and High Reliability Qualified Products List (QPL) Systems for Electrical, Electronic, and Fiber Optic Part
9、s Specifications. (Copies of these documents are available online at https:/assist.daps.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 event of a con
10、flict 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. 3. REQUIREMENTS
11、3.1 Item requirements3.2 . The individual item requirements shall be in accordance with MIL-PRF-55342, and as specified herein. Interface and physical dimensions3.3 . Resistors shall meet the interface and physical dimensions as specified herein (see figure 1). Electrical characteristics3.3.1 . Resi
12、stancea. Greater than or equal to 0.001 ohm but less than 0.010 ohms, the letter “L” is used to represent a power of 10-3. . The nominal resistance is expressed in ohms and is identified by five digits, consisting of four digits and a letter. The letter is used simultaneously as a decimal point and
13、as a multiplier. For resistance values: (i.e.; 1L500 = 0.0015 or 5L000 = 0.005) b. Greater than or equal to 0.010 ohm but less than or equal to 0.500 ohms, the letter “R” is used to represent a decimal point. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from I
14、HS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO: 06011 REV B PAGE 3 * All digits preceding and following the letters “L” and “R” of the group represent significant figures. Minimum and maximum resistance values shall be as specified herein (see 3.3.2). Standa
15、rd resistance decade values shall be in accordance with table I. It is preferred that resistance values be selected as specified in table I. However, if it is necessary to do so, then any values (within specification limits) may be specified and these values can be considered as conforming to this s
16、pecification. Dimensions L H T W0.250 0.010 (6.35 0.254) 0.025 0.010 (0.635 0.254) (See note 3) 0.125 0.010 (3.18 0.254) NOTES: 1. Dimensions are in inches, millimeters are shown in parentheses. 2. Millimeter equivalents are given for general information only. 3. The “T” dimension varies with the re
17、sistance range as follows: Resistance range (ohms) T dimension (inches) 0.001 to 0.0049 0.005 to 0.0069 0.007 to 0.5 0.087 0.010 (2.21 0.254) 0.047 0.010 (1.19 0.254) 0.030 0.010 (0.762 0.254) FIGURE 1. Resistor, fixed, power metal strip, surface mount. Provided by IHSNot for ResaleNo reproduction o
18、r networking permitted without license from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO: 06011 REV B PAGE 4 TABLE I. Standard resistance decade valuesStandard resistance decade values . 10 20 30 40 50 60 70 80 90 11 21 31 41 51 61 71 81 91 12 22 32 42 52
19、 62 72 82 92 13 23 33 43 53 63 73 83 93 14 24 34 44 54 64 74 84 94 15 25 35 45 55 65 75 85 95 16 26 36 46 56 66 76 86 96 17 27 37 47 57 67 77 87 97 18 28 38 48 58 68 78 88 98 19 29 39 49 59 69 79 89 99 3.3.2 Resistance range3.3.3 . The resistance range shall be 0.001 ohms to 0.5 ohm (see table II).
20、Resistance tolerance. Resistance tolerances are available in (D) 0.5 percent and (F) 1 percent (see table II). TABLE II. Resistance range and tolerancesResistance . range (ohms) Resistance tolerance 0.010 to 0.5 0.001 to 0.5 D F 3.3.4 Power rating. The power rating shall be 1.0 watt at +70C. For ope
21、ration at temperatures greater than +70C, derate in accordance with figure 2. For values above 0.1 ohm, derate linearly to 80% rated power at 0.5 ohms. FIGURE 2. Derating curves for high ambient temperatures. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from I
22、HS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO: 06011 REV B PAGE 5 3.3.5 Resistance temperature coefficient. The resistance temperature coefficient shall be as specified in table III. TABLE III. Resistance temperature coefficientResistance temperature coeffi
23、cient . (ppm/C) Resistance range (Ohms) 275 150 110 75 0.001 to 0.0029 0.003 to 0.0049 0.005 to 0.0069 0.007 to 0.5 3.4 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 perc
24、ent, by mass. Tin shall be alloyed with a minimum of 3 percent lead, by mass (see 6.3). 3.5 Short time overload3.6 . When resistors are tested as specified in 4.5, there shall be no evidence of arcing, burning, or charring; the change in resistance between the initial and final measurements shall no
25、t exceed (0.5 percent+ 0.0005 ohm). Moisture resistance3.7 . When resistors are tested as specified in 4.6, there shall be no evidence of mechanical damage; the change in resistance between the initial and final measurements shall not exceed (0.5 percent+ 0.0005 ohm). Manufacturers performance data3
26、.8 . The manufacturers technical specifications and performance data shall be made available to the customer for a period of two years. Marking3.8.1 Individual chip marking. Marking of individual chip resistors is not required but is permitted. Chip resistors may be marked with a 3 character ohmic v
27、alue and if space permits a tolerance value in accordance with MIL-PRF-55342. Abbreviated markings are due to limited space takes precedence over PIN format. . Marking is not required on the resistor; however, each unit package shall be marked with the PIN assigned herein (see 1.2), vendor CAGE code
28、, and date and lot codes. 3.9 Recycled, recovered, or environmentally preferable materials3.10 Manufacturer eligibility. To be eligible for listing as a approved source of supply, a manufacturer shall be listed on the MIL-PRF-55342 Qualified Products List for at least one part, or perform the group
29、A and group B inspections specified herein on a sample agreed upon by the manufacturer and DSCC-VA. . 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, a
30、nd promotes economically advantageous life cycle costs. 3.10.1 Certificate of compliance3.11 . A certificate of compliance shall be required from manufacturers requesting to be an approved source of supply. Workmanship4. VERIFICATION . The resistor shall be uniform in quality and free from any defec
31、ts that will affect life, serviceability, or appearance. 4.1 Qualification inspection4.2 . Qualification inspection is not applicable to this document. Reliability assurance program4.3 . The reliability assurance program specified in MIL-PRF-55342 and maintained in accordance with MIL-STD-790 is not
32、 applicable to this document. Failure rate qualification. Failure rate qualification specified in MIL-PRF-55342 and MIL-STD-690 is not applicable to this document. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMB
33、US, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO: 06011 REV B PAGE 6 4.4 Conformance inspection4.4.1 . Inspection of product for delivery4.4.2 . Inspection of product for delivery shall consist of group A inspection (ER level only, subgroup 2; dc resistance only, subgroup 5; the following exception shall
34、 apply: Resistors shall be examined for legibility under normal production room lighting by an inspector at 10X magnification, and ppm reporting is not applicable) and group B (solder mounting integrity is not applicable) inspection of MIL-PRF-55342. Additionally; a power moisture resistance test as
35、 specified in 4.6 shall be performed. Group B inspection certification4.5 . The acquiring activity may accept a certificate of compliance in lieu of performing the group B inspection (see 6.2d). Short time overloada. An overload dc test potential which will result in 5 times the rated wattage. . Res
36、istors shall be tested in accordance with MIL-PRF-55342. The following details and exceptions shall apply: b. Test board may have copper lamination in excess of the 70 micrometers copper (2 oz.) thickness as described in MIL-PRF-55342. c. Separate resistors shall be used for short time overload and
37、resistance temperature characteristic tests. 4.6 Moisture resistancea. The test is to be performed on an annual basis. . Resistors shall be tested in accordance with MIL-PRF-55342. The following details and exceptions shall apply: b. A 30 piece sample shall be used with 0 defects allowed. c. Step 7a
38、 shall not be applicable. 4.6.1 Moisture resistance certification5. PACKAGING . The acquiring activity may accept a certificate of compliance in lieu of performing the power moisture resistance test (see 6.2d). 5.1 Packaging6. NOTES . For acquisition purposes, the packaging requirements shall be as
39、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 responsible packaging activity to ascertain packaging requirements. Packaging requirements are maintained by the Inventory Control
40、Points packaging activity within the Military Department or Defense Agency, or within the military 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 pa
41、ckaging activity. (This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.) 6.1 Intended use6.2 . Surface mount resistors are used in electronic circuits where space is a major concern. Ordering dataa. Complete PIN (see 1.2). . The contract or
42、purchase order should specify the following: b. Requirements for delivery: One copy of the conformance inspection data or certification of compliance that parts have passed conformance inspection with each shipment of parts by the manufacturer. c. Requirements for packaging and packing. d. Whether t
43、he manufacturer performs the group B inspection and the moisture resistance test or provides a certificate of compliance (see 4.4.2 and 4.6.1). e. If marking is required (see 3.8.1). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DEFENSE SUPPLY CENT
44、ER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO: 06011 REV B PAGE 7 6.3 Tin whisker growth6.4 . 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 manu
45、facture and can develop under typical operating conditions, on products that 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 add
46、itional information on this matter, refer to ASTM-B545 (Standard Specification for Electrodeposited Coatings of Tin). 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 add
47、ed as a recorded user of this drawing may be achieved online at resistordla.mil 6.5 or in writing to: DSCC-VAT, Post Office Box 3990, Columbus, OH 43218-3990 or by telephone (614) 692-0552 or DSN 850-0552. Approved source of supply. Approved source of supply is listed herein. Additional sources will
48、 be added as they become available. Assistance in the use of this drawing may be obtained online at resistordla.milor contact DSCC-VAT, Post Office Box 3990, Columbus, OH 43218-3990 or by telephone (614) 692-0552 or DSN 850-0552. DSCC drawing PIN Vendors similar designation or type number 1/ Vendor
49、CAGE Vendors name and address 06011 WSL-2512-37 91637 Vishay Dale Electronics PO Box 609 Columbus, NE 68602-0609 1/ Parts must be purchased to the DSCC PIN to assure that all performance requirements and tests are met. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
