1、 REVISIONS LT DESCRIPTION DATE APPROVED A Update and validation of drawing. Editorial changes throughout. 3 APR 00 K. Cottongim B Add voltage rating. Change derating curve. Add group B certification and new paragraph 6.4. Editorial changes throughout. 5 FEB 01 K. Cottongim C Changes IAW NOR 5905-R00
2、7-02 paragraph 3.3.1, delete “table II” and substitute “3.3.1.1”. 16 JUL 02 K. Cottongim D Add requirements for termination finish (see 3.4); DoD policy corrections throughout. 12 DEC 02 K. Cottongim E Add pure tin, manufacturer eligibility, and high power pulse paragraphs. Editorial changes through
3、out. 14 JAN 10 M. Radecki F Add new plant address. Editorial changes throughout. 17 JAN 13 M. Radecki G Add Table III. Editorial changes throughout. 12 MAR 13 M. Radecki CURRENT DESIGN ACTIVITY CAGE CODE 037Z3 HAS CHANGED NAMES TO: DLA LAND AND MARITIME COLUMBUS, OHIO 43218-3990 Prepared in accordan
4、ce with ASME Y14.100 REV STATUS OF PAGES REV G G G G G G G G PAGES 1 2 3 4 5 6 7 8 PMIC N/A PREPARED BY Andrew R. Ernst DESIGN ACTIVITY: DEFENSE ELECTRONIC SUPPLY CENTER DAYTON, OH 45444-5000 Original date of drawing 16 November 1994 CHECKED BY Andrew R. Ernst TITLE RESISTOR, FIXED, FILM, CHIP (MELF
5、), 1 WATT, STYLE 2512 APPROVED BY Nancy J. Christolear SIZE A CODE IDENT. NO. 14933 DWG NO. 95006 REV G PAGE 1 OF 8 AMSC N/A 5905-2013-E32 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DEFENSE ELECTRONIC SUPPLY CENTER DAYTON, OHIO SIZE A CODE IDENT
6、 NO. 14933 DWG NO. 95006 REV G PAGE 2 1. SCOPE 1.1 Scope. This drawing describes the requirements for a fixed, film, chip resistor (MELF), style 2512. 1.2 Part or Identifying Number (PIN). The complete PIN is as follows: 95006 - * * | | | Drawing Number Resistance value (see 3.3.1) Tolerance (see 3.
7、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 the
8、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-STD-
9、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:/assist
10、.dla.mil/quicksearch/ or from the DLA Document Services 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 herein (
11、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 3.1 Item requirements. The individual item requirements shall be in accor
12、dance 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-,-,-DEFENSE ELECTRONIC SUPPLY CENT
13、ER DAYTON, OHIO SIZE A CODE IDENT NO. 14933 DWG NO. 95006 REV G PAGE 3 Inches mm Inches mm Inches mm .006 0.15 .040 1.02 .251 6.38 .010 0.25 .079 2.01 NOTES: 1. Dimensions are in millimeters. 2. Inch equivalents are given for general information only. FIGURE 1. Chip resistor. 3.3 Electrical characte
14、ristics. 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 specifies the number of zeros to follow. When the value of resistance is less than 100 ohms, or fractional values of an ohm are re
15、quired, 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 shall 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 approp
16、riate resistance tolerance shall be considered nonconforming to the specification. 3.3.1.1 Resistance range. Minimum and maximum resistance shall be from 0.1 to 2.2 megohms. See table I. TABLE I. Resistance value designations. Designation Resistance ohms R100 to R976 inclusive 0.10 to 0.976 inclusiv
17、e 1R00 to 9R76 inclusive 1.00 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 9763 inclusive 100,000 to 976,000 inclusive 1004 to 9764
18、 inclusive 1,000,000 to 9,760,000 inclusive 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. 95006 REV G PAGE 4 3.3.2 Resistance tolerance. The resistance tolerances sha
19、ll be in accordance with table II TABLE II. Resistance tolerance. Symbol Resistance tolerance percent F 1 G 2 J 5 3.3.3 Rated power. The rated power shall be 1 watt from -55OC to +70OC. For operation at temperatures higher than +70OC, derated in accordance with figure 2. 3.3.4 Temperature range. The
20、 temperature range shall be -55OC to +150OC. 3.3.5 Resistance temperature characteristic. The resistance temperature characteristic shall be 100 ppm/OC. 3.3.6 Voltage rating. The working voltage shall not exceed 350 volts. 3.4 Termination material. Termination material shall be in accordance with MI
21、L-PRF-55342, code letter B. FIGURE 2. Derating curve for high ambient temperatures. 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 alloy
22、ed with a minimum of 3 percent lead, by mass (see 6.5). 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 Govern
23、ment Entity (CAGE) code, date, and lot codes. 3.7 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 the operational and maintenance requi
24、rements, and promotes economically advantageous life 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
25、 specified herein on a sample agreed upon by the manufacturer and DLA Land and Maritime-VAT. Percentofrated power100 80 60 40 20 0 -65 -50 -25 0 25 50 75 100 125 150 175 Ambient Temperature (OC) -55OC 70OC Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-
26、,-,-DEFENSE ELECTRONIC SUPPLY CENTER DAYTON, OHIO SIZE A CODE IDENT NO. 14933 DWG NO. 95006 REV G PAGE 5 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 qua
27、lity 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 Reliability assurance program. The reliability assurance provisions specified in MIL-PRF-55342 and maintaine
28、d in accordance with MIL-STD-790 are not applicable to this document. 4.3 Product level qualification. The 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 pr
29、oduct for delivery shall consist of group A (ER level) and group B 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 inspect
30、ion. Group B inspection shall be in accordance with MIL-PRF-55342. 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). 4.4.1.3 Visual and mechanical inspection. Resistors
31、shall be examined to verify that the materials, design, construction, physical dimensions, marking, and workmanship are in accordance with the applicable requirements 3.2, 3.6, and 3.9. 4.5 Inspection of packaging. Inspection of packaging shall be in accordance with MIL-PRF-55342. 5. PACKAGING 5.1 P
32、ackaging. 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 DoD or in-house contractor personnel, these personnel need to contact the responsible packaging activity to ascertain packaging re
33、quirements. Packaging requirements are maintained by the Inventory Control Points packaging activities within the Military Service or Defense Agency, or within the military services system commands. Packaging data retrieval is available from the managing Military Departments or Defense Agencys autom
34、ated packaging files, CD-ROM products, or by contacting the responsible packaging activity. 6. NOTES (This section contains information of a general 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 thic
35、k or thin film circuits where microcircuitry is intended; also for use in surface mounting applications. 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. 95006 REV G PAG
36、E 6 6.2 Ordering data. The contract or purchase 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 man
37、ufacturer. c. Requirements for packaging and packing. 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 87037 substitution data. Resistors of this DLA Land and Maritime drawing a
38、re substitutes for resistor of the same values and tolerance specified in the canceled DLA Land and Maritime drawing 87037 or in table III. The resistance tolerance for this drawing is (G) 2 percent. 6.4 DLA Land and Maritime drawing 01002. Resistors of DLA Land and Maritime drawing 01002 are of the
39、 same footprint in a flat ceramic packaging and a power rating of 1.5 watt. 6.5 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 from a day to years after manufacture and
40、 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 additional inf
41、ormation on this matter, refer to ASTM-B545 (Standard Specification for Electrodeposited Coatings of Tin). 6.6 Electrostatic charge. Under several combinations of conditions, these resistors can be electrically damaged, by electrostatic charges, and drift from specified value. Users should consider
42、this phenomena when ordering or shipping resistors. Direct shipment to the Government is controlled by MIL-DTL-39032 that specifies a preventive packaging procedure. 6.7 Pulse applications. Designers are CAUTIONED on using the above resistors in high power pulse applications. Since they have not bee
43、n 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-55342. 6.8 User of record. Coordination of this document for future revisions is coordinated only with
44、 the approved source of supply and the users of record of this document. Requests to be added as a 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
45、850-8754. 6.9 Approved source of supply. Approved source of supply is listed herein. Additional sources 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 432
46、18-3990 or by telephone (614) 692-8754 or DSN 850-8754. 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. 95006 REV G PAGE 7 TABLE III. DLA Land and Maritime drawing 8703
47、7 substitution data Dash Number Resistive Value (ohms) Dash Number Resistive Value (ohms) Dash Number Resistive Value (ohms) Dash Number Resistive Value (ohms) 001 1.0 041 47 081 2,200 121 100,000 002 1.1 042 51 082 2,400 122 110,000 003 1.2 043 56 083 2,700 123 120,000 004 1.3 044 62 084 3,000 124
48、130,000 005 1.5 045 68 085 3,300 125 150,000 006 1.6 046 75 086 3,600 126 160,000 007 1.8 047 82 087 3,900 127 180,000 008 2.0 048 91 088 4,300 128 200,000 009 2.2 049 100 089 4,700 129 220,000 010 2.4 050 110 090 5,100 130 240,000 011 2.7 051 120 091 5,600 131 270,000 012 3.0 052 130 092 6,200 132
49、300,000 013 3.3 053 150 093 6,800 133 330,000 014 3.6 054 160 094 7,500 134 360,000 015 3.9 055 180 095 8,200 135 390,000 016 4.3 056 200 096 9,100 136 430,000 017 4.7 057 220 097 10,000 137 470,000 018 5.1 058 240 098 11,000 138 510,000 019 5.6 059 270 099 12,000 139 560,000 020 6.2 060 300 100 13,000 140 620,000 021 6.8 061 330 101 15,000 141 680,000 022 7.5 062 360 102 16,000 142
