1、 REVISIONS LTR DESCRIPTION DATE APPROVED A Add requirements for termination finish (see 3.4); Editorial and DoD policy corrections throughout. 12 DEC 02 K. A. COTTONGIM B Inactivated for new design, and remove the existing source of supply. Editorial changes throughout. 10 MAR 05 K. A. COTTONGIM DSC
2、C drawing 97008 is INACTIVE for NEW DESIGN as of 10 March 2005. Use DSCC drawing 05009 for all new design and replacement purposes. Prepared in accordance with ASME Y14.100 Selected item drawing REV B B B B B B REV STATUS OF PAGES PAGES 1 2 3 4 5 6 PMIC N/A PREPARED BY Andrew R. Ernst DESIGN ACTIVIT
3、Y: DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OH CHECKED BY Andrew R. Ernst APPROVED BY David E. Moore TITLE RESISTOR, FIXED, FILM, CHIP (MELF), 1/4 WATT, STYLE 0204 SIZE A CODE IDENT. NO. 037Z3 DWG NO. 97008 Original date of drawing 2 JUNE 1998 REV B PAGE 1 OF 6 AMSC N/A 5905-E515 Provided by IHSNot
4、 for ResaleNo reproduction or networking permitted without license from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 97008 REV B PAGE 2 1. SCOPE 1.1 Scope. This drawing describes the requirements for a fixed, film, chip resistor (MELF), style 0204. 1.2 P
5、art or Identifying Number (PIN). The complete PIN is as follows: 97008 - * * * I I I I I I I I Drawing Resistance value Characteristic Tolerance number (see 3.3.1) (see 3.3.2) (see 3.3.3) 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 and 4 of t
6、his 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 completeness of this list, document users are cautioned that they must meet all specified
7、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, standards, and handbooks form a part of this document to the extent specified herein. Unless ot
8、herwise specified, the issues of these documents are those cited in the solicitation or contract. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-PRF-55342 - Resistors, Fixed, Film, Chip, Nonestablished Reliability, Established Reliability, Space Level, General Specification for. DEPARTMENT OF DEFENSE STAN
9、DARDS MIL-STD-690 - Failure Rate Sampling Plans and Procedures. MIL-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
10、 Parts. (Copies of these documents are available online at http:/assist.daps.dla.mil/quicksearch/ or http:/assist.daps.dla.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.3 Order of precedence. In the event of a conflict between t
11、he text of this document and the references cited herein, 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 s
12、hall 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-,-,-DEFENSE SUPPLY
13、 CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 97008 REV B PAGE 3 Inches mm .006 0.15 .020 0.50 .033 0.85 .055 1.40 .142 3.60 NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general information only. FIGURE 1. Chip resistor. 3.3 Electrical characteristic
14、s. 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 required
15、, 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 table IV of MIL-PRF-55342 for the appropriate resistance tolerance
16、 shall be considered nonconforming to the specification. TABLE I. Resistance value designations. Designation Resistance ohms R220 to R976 inclusive 1R00 to 9R76 inclusive 10R0 to 97R6 inclusive 1000 to 9760 inclusive 1001 to 9761 inclusive 1002 to 9762 inclusive 1003 to 9763 inclusive 1004 to 9764 i
17、nclusive 1005 0.22 to 0.976inclusive 1.00 to 9.76 inclusive 10.0 to 97.6 inclusive 100 to 976 inclusive 1,000 to 9,760 inclusive 10,000 to 97,600 inclusive 100,000 to 976,000 inclusive 1,000,000 to 9,760,000 inclusive 10,000,000 3.3.1.1 Resistance range. Minimum and maximum resistance shall be in ac
18、cordance with table II. 3.3.2 Resistance characteristic. The resistance characteristic shall be in accordance with table II. 3.3.3 Resistance tolerance. The resistance tolerances shall be in accordance with table II. Provided by IHSNot for ResaleNo reproduction or networking permitted without licens
19、e from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 97008 REV B PAGE 4 3.4 Termination material. Termination material shall be in accordance with MIL-PRF-55342, code letter B. 3.5 Voltage rating. The continuous voltage shall not exceed 200 volts. 3.6 Pow
20、er rating. The power rating shall be 0.25 watt from -55C to +70C. For operation at temperatures higher than +70C, derate in accordance with figure 2. 3.7 Temperature range. The temperature range shall be -55C to +125C. 3.8 Marking. Marking of the individual chip resistors is not required; however, e
21、ach 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. The body may be color coded as called out in MIL-STD-1285 or the manufacturers catalog. TAB
22、LE II. Resistance characteristics, tolerances, and range. Characteristics Tolerances Resistance range (ohms) Symbol ppm/C Symbol percent Minimum Maximum B 0.1 43 221k D 15 C 0.25 22 221k D 0.5 10 221k B 0.1 43 511k E 25 C 0.25 22 511k D 0.5 10 1M H 50 D 0.5 10 1M F 1.0 1 10M K 100 G 2.0 0.51 10M J 5
23、.0 0.22 10M 3.9 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 requirements, and promotes economically
24、 advantageous life cycle costs. 3.10 Certificate of compliance. A certificate of compliance shall be required from manufacturers requesting to be a suggested source of supply. 3.11 Workmanship. Resistors shall be uniform in quality and free from defects that will affect life, serviceability, or appe
25、arance. 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 document. 4.3
26、 Product level qualification. Product level 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 COLUMBUS, OHIO SIZE A CODE IDENT
27、NO. 037Z3 DWG NO. 97008 REV B PAGE 5 FIGURE 2. Derating curve for high ambient temperatures. 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 inspections. 4.4.1.1 Group A inspection. Group A inspe
28、ction (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, subgroup 1 only. 4.4.1.2.1 Certification. The acquirin
29、g 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 shall be examined to verify that the materials, design, construction, physical dimensions, marking, and
30、workmanship are in accordance with the applicable requirements 3.2, 3.8, and 3.11. 4.5 Inspection of packaging. Inspection of packaging shall be in accordance with MIL-PRF-55342. 5. PACKAGING 5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or
31、 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 Points packaging activities
32、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 automated packaging files, CD-ROM products, or by contacting the responsible packaging activity. Provided by
33、 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. 97008 REV B PAGE 6 6. NOTES (This section contains information of a general or explanatory nature that may be helpful, but is not
34、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 order should specify the following: a. Complete PIN (s
35、ee 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 packing. d. Whether the manufacturer performs the group B
36、 tests or provides certification of compliance with group B requirements. 6.3 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 s
37、hipping resistors. Direct shipment to the Government is controlled by MIL-DTL-39032 that specifies a preventive packaging procedure. 6.4 User of record. Coordination of this document for future revisions is coordinated only with the suggested source of supply and the users of record of this document
38、. Requests to be added as a recorded user of this drawing may be achieved online at resistordla.mil or in writing to: DSCC-VAT, Post Office Box 3990, Columbus, OH 43218-3990 or by telephone (614) 692-0552 or DSN 850-0552. 6.5 Suggested source of supply. Suggested source of supply is listed herein. A
39、dditional sources will be added as they become available. Assistance in the use of this drawing may be obtained online at resistordla.mil or 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 CAGE Vendors name and address 97008-* 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-,-,-
