1、 REVISIONS LTR DESCRIPTION DATE APPROVED A Add tolerances “K” (10 percent) and “M” (20 percent). Editorial changes throughout. 16 OCT 01 K. Cottongim B Changes in accordance with NOR 5905-R001-02. 30 OCT 01 K. Cottongim C Change derating temperature to 25OC. 30 JAN 02 K. Cottongim D Changes IAW NOR
2、5905-R009-02 paragraph 3.3.1, delete “table II” and substitute “3.3.1.1”. 16 JUL 02 K. Cottongim E Add requirements for termination finish (see 3.4); DoD policy corrections throughout. 12 DEC 02 K. Cottongim F Add pure tin, manufacturer eligibility, and high power pulse paragraphs. Editorial changes
3、 throughout. 14 JAN 10 M. Radecki G Add new plant address. Editorial changes throughout. 17 JAN 13 M. Radecki CURRENT DESIGN ACTIVITY CAGE CODE 037Z3 HAS CHANGED NAMES TO: DLA LAND AND MARITIME COLUMBUS, OHIO 43218-3990 Prepared in accordance with ASME Y14.100 Source control drawing REV STATUS OF PA
4、GES REV G G G G G G G PAGES 1 2 3 4 5 6 7 PMIC N/A PREPARED BY Andrew R. Ernst DESIGN ACTIVITY: DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OH Original date of drawing 12 January 2001 CHECKED BY Andrew R. Ernst TITLE RESISTOR, FIXED, FILM, CHIP, 1.5 WATT (MELF), FLAT CERAMIC PACKAGE, STYLE 2512 APPROV
5、ED BY Kendall A. Cottongim SIZE A CODE IDENT. NO. 037Z3 DWG NO. 01002 REV G PAGE 1 OF 7 AMSC N/A 5905-2013-E01 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. 01002 RE
6、V G PAGE 2 1. SCOPE 1.1 Scope. This drawing describes the requirements for a 1.5 watt, fixed, chip resistor (MELF), style 2512, in a flat ceramic package. 1.2 Part or Identifying Number (PIN). The complete PIN is as follows: 01002 - * * | | | Drawing Number Resistance value (see 3.3.1) Tolerance (se
7、e 3.3.2) 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.2.1 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
8、the solicitation or contract. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-PRF-55342 - Resistors, Chip, Fixed, Film, Nonestablished Reliability, Established Reliability, Space Level, General Specification for. DEPARTMENT OF DEFENSE STANDARDS MIL-STD-690 - Failure Rate Sampling Plans and Procedures. MIL-
9、STD-790 - Standard Practice for Established Reliability and High Reliability Qualified Products 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 https:/as
10、sist.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 document and the references cited h
11、erein (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 requirements. The individual item
12、requirements shall be in accordance with MIL-PRF-55342 and as specified herein. 3.2 Interface and physical dimensions. The interface and physical dimensions shall be as specified herein (see figure 1). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
13、DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 01002 REV G PAGE 3 3.3 Electrical characteristics. 3.3.1 Resistance. The nominal resistance expressed in ohms is identified by four digits; the first three digits represent significant figures and the last digit speci
14、fies the number of zeros to follow. When the value of resistance is less than 100 ohms, or fractional values of an ohm are required, the letter “R“ shall be substituted for one of the significant figures. The resistance value designations are shown in table I. Minimum and maximum resistance values s
15、hall be as specified in 3.3.1.1. Resistance values not listed in the “10 to 100” decade table of MIL-PRF-55342 for the appropriate resistance tolerance shall be considered nonconforming to the specification. Inches mm Inches mm Inches mm Inches mm .005 0.13 .010 0.25 .105 2.67 .170 4.32 .006 0.15 .0
16、79 2.01 .134 3.40 .251 6.38 NOTES: 1. Dimensions are in millimeters. 2. Inch equivalents are given for general information only. FIGURE 1. Chip resistor. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO S
17、IZE A CODE IDENT NO. 037Z3 DWG NO. 01002 REV G PAGE 4 3.3.1.1 Resistance range. Minimum and maximum resistance shall be from 0.1 to 348 kilohms. See table I. TABLE I. Resistance value designations. Designation Resistance ohms R100 to R976 inclusive 0.10 to 0.976 inclusive 1R00 to 9R76 inclusive 1.00
18、 to 9.76 inclusive 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 9762 inclusive 10,000 to 97,600 inclusive 1003 to 3483 inclusive 100,000 to 384,000 inclusive 3.3.2 Resistance tolerance. The resistanc
19、e tolerances shall be in accordance with table II. Tolerances “K” and “M” signify that the resistor shall be an untrimmed body for enhanced pulse handling characteristics (see 6.4). TABLE II. Resistance tolerance. Symbol Resistance tolerance percent Symbol Resistance tolerance percent Symbol Resista
20、nce tolerance percent F 1 J 5 M 20 G 2 K 10 3.3.3 Rated power. The rated power shall be 1.5 watt from -55OC to +25OC. For operation temperatures higher than +25OC, derated in accordance with figure 2 (see 6.5). 3.3.4 Temperature range. The temperature range shall be -55OC to +150OC. FIGURE 2. Derati
21、ng curve for high ambient temperatures. 3.3.5 Resistance temperature characteristic. The resistance temperature characteristic shall be 100 ppm/OC. 3.3.4 Voltage rating. The working voltage shall not exceed 350 volts. 3.4 Termination material. Termination material shall be in accordance with MIL-PRF
22、-55342, code letter B. Percent of rated power100 80 60 40 20 0 -65 -50 -25 0 25 50 75 100 125 150 175 Ambient Temperature (OC) -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.
23、037Z3 DWG NO. 01002 REV G PAGE 5 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, by mass. Tin shall be alloyed with a minimum of 3 percent lead, by mass (see 6
24、.6). 3.6 Marking. Marking of the individual chip resistors is not required; however, each unit package shall be marked in accordance with MIL-STD-1285 and include the PIN as specified herein (see 1.2), the manufacturers name or Commercial and Government Entity (CAGE) code, date, and lot codes. 3.7 R
25、ecycled, 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 the operational and maintenance requirements, and promotes economically advantageous lif
26、e cycle costs. 3.8 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 A and group B inspections specified herein on a sample agreed upon by the ma
27、nufacturer and DLA Land and Maritime-VAT. 3.8.1 Certificate of compliance. A certificate of compliance shall be required from manufacturers requesting to be an approved source of supply. 3.9 Workmanship. Resistors shall be uniform in quality and free from defects that will affect life, serviceabilit
28、y, or appearance. 4. VERIFICATION 4.1 Qualification inspection. Qualification inspection is not applicable to this document. 4.2 Reliability assurance program. The reliability assurance provisions specified in MIL-PRF-55342 and maintained in accordance with MIL-STD-790 are not applicable to this doc
29、ument. 4.3 Product level qualification. Product level qualification specified in MIL-PRF-55342 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 consist of group A (ER level) and group B
30、inspections. 4.4.1.1 Group A inspection. Group A inspection (ER level) shall be in accordance with MIL-PRF-55342. PPM testing and verification as specified in MIL-PRF-55342 are not applicable to this document. 4.4.1.2 Group B inspection. Group B inspection shall be in accordance with MIL-PRF-55342.
31、4.4.1.2.1 Certification. The acquiring activity, at its discretion, may accept a certificate of compliance with group B requirements in lieu of performing group B tests (see 6.2d). 4.5 Visual and mechanical inspection. Resistors shall be examined to verify that the materials, design, construction, p
32、hysical dimensions, marking, and workmanship are in accordance with the applicable requirements 3.2, 3.6, and 3.9. 4.6 Inspection of packaging. Inspection of packaging shall be in accordance with MIL-PRF-55342. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from
33、 IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 01002 REV G 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 D
34、oD or in-house contractor personnel, these personnel need to contact the responsible 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
35、the Military Departments Services System Command. Packaging data retrieval is 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
36、or explanatory nature that may be helpful, but is not mandatory.) 6.1 Intended use. The chip resistors described herein are intended to be used in thick or thin film circuits where microcircuitry is intended; also for use in surface mounting applications. 6.2 Ordering data. The contract or purchase
37、order should specify the following: a. Complete PIN (see 1.2). 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 pac
38、king. d. Whether the manufacturer performs the group B tests or provides certification of compliance with group B requirements (see 4.4.1.2.1). 6.3 DLA Land and Maritime drawing 95006. Resistors of DLA Land and Maritime drawing 95006 are of the same footprint without the ceramic packaging, and a pow
39、er rating of 1 watt. 6.4 Untrimmed resistors. Parts ordered to tolerances “K” and “M” signify that the manufacturer shall provide resistors which have not been trimmed for tighter tolerances. Untrimmed resistors of this style have approximately 4 times the surge capability as trimmed resistors. Manu
40、facturers generally use a select group of resistor rods and trim them to provide a great number of resistor values. Orders for untrimmed values not in stock could result in long lead times and large minimum order quantity to compensate for a custom ceramic body. 6.4.1 Pulse applications. Designers a
41、re CAUTIONED on using the above resistors in high power pulse applications. Since they have not been qualified nor tested for such applications, damage and premature failure are possible. These resistors only see a one-time pulse (Short-time overload) as part of the group B inspection of MIL-PRF-553
42、42. 6.5 Rated power. Rated power for conformation inspection is performed at 70OC using a derated wattage of 1 watt. 6.6 Tin whisker growth. 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
43、from a day to years after manufacture 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 g
44、rowth of tin whiskers. For additional information on this matter, refer to ASTM-B545 (Standard Specification for Electrodeposited Coatings of Tin). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A
45、CODE IDENT NO. 037Z3 DWG NO. 01002 REV G PAGE 7 6.7 Electrostatic charge. Under several combinations of conditions, these resistors can be electrically damaged, by electrostatic charges, and drift from specified value. Users should consider this phenomena when ordering or shipping resistors. Direct
46、shipment to the Government is controlled by MIL-DTL-39032 that specifies a preventive packaging procedure. 6.8 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
47、 recorded user of this drawing may be achieved online at resistordla.mil or in writing to: DLA Land and Maritime-VAT, Post Office Box 3990, Columbus, OH 43218-3990 or by telephone (614) 692-8754 or DSN 850-8754. 6.9 Approved source of supply. Approved source of supply is listed herein. Additional so
48、urces will be added as they become available. Assistance in the use of this drawing may be obtained online at resistordla.mil or contact DLA Land and Maritime-VAT, Post Office Box 3990, Columbus, OH 43218-3990 or by telephone (614) 692-8754 or DSN 850-8754. DLA Land and Maritime drawing PIN Vendors
49、similar designation or type number 1/ VendorCAGE Vendors name and address 01002-* PPS-2 11502 TT Electronics/International Resistive Company, Inc. 4222 S. Staples Street Corpus Christi, TX 78411 SQQ65 Plant: BI Technologies S.A. DE C.V. Circulo De La Amistad No. 102, Pimsa IV 413 Rood Rd STE 7 Mexicali, Mexico 21210 1/ Parts must be purchased to the DLA Land and Maritime PIN t
