1、REVISIONS LTR DESCRIPTION DATE APPROVED A Vendor recommended changes. Current DoD requirements. Editorial requirements throughout 15 Sept 2009 M. Radecki Prepared in accordance with ASME Y14.100 Source control drawing REV STATUS OF PAGES REV A A A A A A A A PAGES 1 2 3 4 5 6 7 8 PMIC N/A PREPARED BY
2、 Jesus V. Garcia III DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OH 43218-3990 Original date of drawing 01 April 2008 CHECKED BY Andrew R. Ernst TITLE RESISTORS, CHIP, FIXED, CURRENT SENSING, ULTRA PRECISION, STYLE 1625 APPROVED BY Michael A. Radecki SIZE A CODE IDENT. NO. 037Z3 DWG NO. 08003 REV A PA
3、GE 1 OF 8 AMSC N/A 5905-E697 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. 08003 REV A PAGE 2 1. SCOPE 1.1 Scope. This drawing describes the requirements for an ultr
4、a precision, current sensing, chip resistor, style 1625. 1.2 Part or Identifying Number (PIN). The complete PIN is as follows: 08003 - * * * Drawing number Resistance value (see 3.3.1) Tolerance (see 3.3.2) Resistance Temperature Characteristic (RTC) (see 3.3.3) 2. APPLICABLE DOCUMENTS 2.1 Governmen
5、t documents. 2.1.1 Specifications and standards. 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 listed in the cited in the solicitation or contract (see 6.2). DEPAR
6、TMENT OF DEFENSE SPECIFICATION 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-790 - Standard Practice for Esta
7、blished Reliability and High Reliability Qualified Products List (QPL) Systems for Electrical, Electronic, and Fiber Optic Parts Specifications. (Copies of these documents are available online at http:/assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Aven
8、ue, Building 4D, Philadelphia, PA 19111-5094.) 2.2 Order of precedence. Unless otherwise noted herein or in the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable
9、laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Item requirements. The individual item requirements shall be as specified herein. 3.2 Interface and physical dimensions. The interface and physical dimensions shall be as specified in MIL-PRF-55342 and herein (se
10、e figure 1). Passivation is not applicable, however, a protective coating over the element shall be provided. 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. 08003 REV
11、 A PAGE 3 L W H A B .250 .010 .040 max .160 .010 .080 .005 .040 .010 Inches mm Inches mm Inches mm Inches mm Inches mm 0.005 0.13 0.040 1.016 0.080 2.032 0.200 5.08 0.260 6.60 0.010 0.25 0.070 1.778 0.160 4.064 0.250 6.35 NOTES: 1. Dimensions are in Inches. Metric equivalents are given for general i
12、nformation only. 2. The pictorial view of the styles above is given as representative of the envelope of the item. Slight deviations from the outline shown, which are contained within the envelope and do not alter the functional aspects of the device, are acceptable. 3. The bottom view shown above r
13、epresents the mounting side. FIGURE 1. Chip resistor. 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. 08003 REV A PAGE 4 3.3 Electrical characteristics 3.3.1 Resistanc
14、e. The nominal resistance expressed in ohms is identified by five characters, consisting of four digits and a letter. The letter is used simultaneously as a decimal point and as a multiplier. For resistance values greater than or equal to 1 ohm but less than 1,000 ohms, the letter “R“ is used to rep
15、resent a decimal point. All digits preceding and following the letters (R) of the group represent significant figures. The resistance value designations are shown in table I. Minimum and maximum resistance values shall be as specified in 3.3.2. TABLE I. Designation of resistance values. Designation
16、Resistance ohms 0R010 to 10R00 incl. .01 to 10.0 incl. 3.3.2 Resistance tolerance. Resistors are available in resistance tolerances as specified in table II. TABLE II. Resistance tolerance. Characteristic Symbol Resistance tolerance percent Resistance range (ohms) A D 0.5 0.5 to 10.0 incl. F 1.0 0.0
17、1 to 10.0 incl. G 2.0 J 5.0 K 10.0 B 1/ D 0.5 0.3 to 10.0 incl. F 1.0 0.01 to 10.0 incl. G 2.0 J 5.0 K 10.0 C D 0.5 2 to 10.0 incl. F 1.0 G 2.0 J 5.0 K 10.0 D F 1.0 0.3 to 2.0 incl. G 2.0 J 5.0 K 10.0 1/ Inactive for new design. 3.3.3 Resistance temperature characteristic and resistance range. The r
18、esistance range shall be from 0.01 ohms to 10.0 ohms. The corresponding resistance temperature characteristic is specified in table III. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT
19、NO. 037Z3 DWG NO. 08003 REV A PAGE 5 Table III. Resistance temperature characteristic and resistance range. Characteristic Resistance range (in ohms) Resistance Temperature Characteristic (RTC) in ppm/OC A 2R000 to 10R000 0R500 to 2R000 5 10 0R100 to 0R500 15 0R050 to 0R100 20 0R030 to 0R050 35 0R01
20、0 to 0R030 50 B 1/ 0.3 to 2.0 incl. 3 C and D 0.3 to 10R00 incl. 3 1/ Inactive for new design. 3.3.4 Power rating. The power rating is 1 watt (when mounted on Alumina substrate) at 70OC derated to +150OC at zero power (see figure 2). FIGURE 2. Derating curve. 3.3.5 Termination. The termination mater
21、ial shall be in accordance with MIL-PRF-55342, code letter B. 3.3.6 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 o
22、f 3 percent lead, by mass (see 6.3). 3.4 Thermal shock. When resistors are tested as specified in MIL-PRF-55342 for thermal shock the change in resistance shall not exceed 0.02 percent +0.001 ohm. 3.5 Low temperature operation. When resistors are tested as specified in MIL-PRF-55342 for low temperat
23、ure operation the change in resistance shall not exceed 0.02 percent +0.001 ohm. 3.6 Short time overload. When resistors are tested as specified in MIL-PRF-55342 for short time overload the change in resistance shall not exceed 0.02 percent +0.001 ohm. -65 -50 -25 0 25 50 75 100 125 150 175 Temperat
24、ure (OC) 100 80 60 40 20 0 Percent of rated power70OC -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. 08003 REV A PAGE 6 3.7 High temperature exposure. When resi
25、stors are tested as specified in MIL-PRF-55342 for high temperature exposure the change in resistance shall not exceed 0.1 percent +0.001 ohm. 3.8 Resistance to soldering heat. When resistors are tested as specified in MIL-PRF-55342 for resistance to soldering heat the change in resistance shall not
26、 exceed 0.03 percent +0.001 ohm. 3.9 Moisture resistance. When resistors are tested as specified in MIL-PRF-55342 for moisture resistance the change in resistance shall not exceed 0.05 percent +0.001 ohm. 3.10 Life. When resistors are tested as specified in MIL-PRF-55342 for life the change in resis
27、tance shall not exceed 0.1 percent +0.001 ohm. 3.11 Resistance temperature characteristic. When resistors are tested as specified in MIL-PRF-55342 the RTC shall not exceed the values specified (see 3.3.3). 3.12 Marking. Marking is not required on this resistor; however, each waffle pack and each uni
28、t package shall be marked with the PIN assigned herein (see 1.2), the manufacturers identification code, the date code, and the lot code. At the option of the manufacturer, the resistor may be marked (i.e., laser, color dot, etc.). The marking shall remain legible after all tests. 3.13 Manufacturer
29、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 of parts agreed upon by the manufacturer and DSCC-VA.
30、 3.13.1 Certificate of compliance. A certificate of compliance shall be required from manufacturers requesting to be listed as approved sources of supply. 3.14 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to
31、 the maximum extent possible provided that the material meets or exceeds the operational and maintenance requirements and promotes economically advantageous life cycle costs. 3.15 Workmanship. Resistors shall be processed in such a manner as to be uniform in quality and be free from defects that wil
32、l affect life, serviceability, or appearance. 4. VERIFICATION 4.1 Product assurance program. The product assurance program specified in MIL-PRF-55342 and maintained in accordance with MIL-STD-790 is not applicable to this document. 4.2 Qualification inspection. Qualification inspection is not applic
33、able 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 product for delivery shall consist of group A ins
34、pection (ER level only. PPM reporting, subgroup 1, subgroup 3, are not applicable) and group B inspection of MIL-PRF-55342. 4.4.1.1 Certification. The procuring activity may accept a certificate of compliance in lieu of Group B inspection. Provided by IHSNot for ResaleNo reproduction or networking p
35、ermitted without license from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 08003 REV A PAGE 7 5. PACKAGING 5.1 Packaging. For acquisition purpose, the packaging requirements shall be as specified in the contract or order (see 6.2). When packaging of mate
36、riel 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 within the Military Service or Defense A
37、gency, 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. 6. NOTES (This section contains information of a ge
38、neral or explanatory nature that may be helpful, but is not mandatory.) 6.1 Intended use. Chip resistors are intended to be used in thick or thin film circuits where microcircuity is intended, also, for use in surface mounting application. 6.2 Ordering data. The contract or purchase order should spe
39、cify the following: a. Complete PIN (see 1.2). b. Requirements for delivery of one copy of the conformance inspection data or a certificate of compliance that parts have passed conformance inspection with each shipment of parts by the manufacturer. c. Packaging requirements (see 5.1). (i.e. Electros
40、tatic discharge sensitive packaging). d. Whether the manufacturer performs the group B tests or provides certificate of compliance with group B (see 4.4.1.1). 6.3 Tin whisker growth. The use of alloys with tin content greater than 97 percent, by mass, may exhibit tin whisker growth problems after ma
41、nufacture. Tin whiskers may occur anytime 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
42、lead, by mass, have shown to inhibit the growth of tin whiskers. For additional information on this matter, refer to ASTM-B545 (Standard Specification for Electrodeposited Coatings of Tin). 6.4 Tolerance caution. Soldering temperature used during installation may cause resistance to shift up to 0.05
43、%. 6.5 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 shipment to Government is controlled by MIL-D
44、TL-39032 that specifies a preventative packaging procedure. 6.6 Pulse applications. Designers are CAUTIONED on using these resistors in 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 t
45、ime pulse (Short-time overload) as part of the group B inspection. 6.7 Users of record. Coordination of this document for future revisions is coordinated only with the approved sources of supply and the users of record of this document. Requests to be added as a recorded user of this drawing may be
46、achieved on-line at resistordla.mil or in writing to: DSCC-VAT, P.O. Box 3990, Columbus, OH 43218-3990 or by telephone (614) 692-8754 or DSN 850-8754. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE
47、 A CODE IDENT NO. 037Z3 DWG NO. 08003 REV A PAGE 8 6.8 Approved sources of supply. Approved sources of supply are listed herein. Additional sources will be added as they become available. Assistance in the use of this drawing may be obtained on on-line at resistordla.mil or contact DSCC-VAT, P.O. Bo
48、x 3990, Columbus, OH 43218-3990, or by telephone (614) 692-8754 or DSN 850-8754. DSCC drawing PIN (see 1.2) Vendor similar designation or type number 1/ Vendor CAGE Vendor name and address 08003-*A 08003-*B 2/ 08003-*C 08003-*D VCS1625*B* VCS1625Z*B* S8016 Vishay Resistors 63 Lancaster Avenue Malvern, PA 19355-2120 Plant: Vishay Israel Ltd. 2 Haofan Street Holon 58125, ISRAEL 08003-*A TCS1625*B* 2X034 Texas Components Corp. 1716 W. Sam Houston Parkway N. Houston, TX 77043-2723 08003-*B 2/ 08003-*C 08003-*D TCS1625Z*
