1、 REVISIONS LTR DESCRIPTION DATE APPROVED Prepared in accordance with ASME Y14.100 Selected item drawing REV STATUS REV OF PAGES PAGES 1 2 3 4 5 6 7 8 9 PMIC N/A PREPARED BY Andrew R. ErnstDEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OH Original date of drawing CHECKED BY Andrew R. ErnstTITLE RESISTOR,
2、CHIP, FIXED, FILM, 17 December 2004 APPROVED BY Kendall A. CottongimHIGH VOLTAGE, STYLE 2512 SIZE A CODE IDENT. NO. 037Z3 DWG NO. 03027 REV PAGE 1 OF 9 AMSC N/A 5905-E448 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS
3、 COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 03027 REV PAGE 2 1. SCOPE 1.1 Scope. This drawing describes the requirements for a high voltage, fixed, film, .250 X .120 chip resistor. 1.2 Part or Identifying Number (PIN). The complete PIN is as shown in the following example: 03027- * * * Drawi
4、ng number Resistance value (see 3.3.2) Tolerance (see 3.3.3) Termination (see 3.3.8) 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. U
5、nless otherwise specified, the issues of these documents are those cited in the solicitation or contract. DEPARTMENT OF DEFENSE SPECIFICATION MIL-PRF-55342 - Resistors, Chip, Fixed, Film, Nonestablished Reliability, Established Reliability, Space Level, General Specification for. DEPARTMENT OF DEFEN
6、SE STANDARDS 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. (Copies of these documents are available onl
7、ine 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.) 2.2 Order of precedence. In the event of a conflict between the text of this document and the references cited he
8、rein, 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 as specified herein. 3.2 Interface and physi
9、cal dimensions. The interface and physical dimensions shall be as specified in MIL-PRF-55342 and herein (see figure 1). Passivation is not applicable, however, a protective coating over the element shall be provided. 3.3 Electrical characteristics. Provided by IHSNot for ResaleNo reproduction or net
10、working permitted without license from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 03027 REV PAGE 3 L W T (max) D Inch 0.250 0.006 mm 6.350 0.152 Inch 0.126 0.006 mm 3.200 0.152Inch 0.025 0.002 mm 0.635 0.051 Inch 0.025 max. mm 0.635 max. NOTES: 1. Dime
11、nsions are in millimeters. 2. Inch equivalents are given for general information only. 3. 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 a
12、spects of the device, are acceptable. FIGURE 1. Chip resistor. 3.3.1 Resistance. The nominal resistance expressed in ohms is identified by four characters, consisting of three digits and a letter. The letter is used simultaneously as a decimal point and as a multiplier. For resistance values: a. Gre
13、ater than or equal to 12 megohm but less than 1 gigohms, the letter “M“ is used to represent a decimal point. b. Greater than or equal to 1 gigohm but less than 50 gigohms, the letter “G“ is used to represent a decimal point. All digits preceding and following the letters (M or G) of the group repre
14、sent significant figures. The resistance value designations are shown in table I. Minimum and maximum resistance values shall be as specified herein (see table II). The resistance values for tolerances F, G, J, and K may be any value within the limits specified herein. Resistance values not listed i
15、n the “10 to 100“ decade table of MIL-PRF-55342 for the appropriate resistance tolerance shall be considered as not conforming to the specification. The standard values for every decade shall follow the sequence demonstrated for the “10 to 100“ decade table specified in MIL-PRF-55342. 3.3.2 Resistan
16、ce range. The resistance range shall be from 12 Megohms to 50 Gigohms. 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. 03027 REV PAGE 4 TABLE I. Designation of resista
17、nce values. Designation Resistance ohms 6M00 to 9M99 incl. 10M0 to 99M9 incl. 100M to 999M incl. 1G00 to 9G99 incl. 10G0 to 50G0 incl. 6,000,000 to 9,999,999 incl. 10,000,000 to 99,999,999 incl. 100,000,000 to 999,999,999 incl. 1,000,000,000 to 9,999,999,999 incl. 10,000,000,000, to 50,000,000,000,
18、incl. 3.3.3 Resistance tolerance. Resistors are available in resistance tolerances as specified in table II (see 6.5). TABLE II. Resistance tolerance. Symbol Resistance tolerance percent F G J K 1.0 2.0 5.0 10.0 3.3.4 Power rating. The power rating for chip resistors shall be .700 watt at +70C derat
19、ed to +150C at zero power (see figure 2). 3.3.5 Voltage rating. The maximum continuous working voltage shall not exceed 3000 volts. Voltage derating should be applied if low pressure or high humidity is encounter. 3.3.6 Resistance temperature coefficient. The resistance temperature coefficient shall
20、 be 100 ppm/C. 3.3.7 Operating temperature. The operating temperature shall be -25C to +150C. 3.3.8 Termination. The termination material shall be in accordance with MIL-PRF-55342, code letter B, C, G, and U FIGURE 2. Derating curve. Provided by IHSNot for ResaleNo reproduction or networking permitt
21、ed without license from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 03027 REV PAGE 5 3.4 DC resistance. When resistors are tested as specified in 4.6, the dc resistance shall be within the specified tolerance of the nominal resistance. 3.5 Thermal shock
22、. When resistors are tested as specified in 4.7, the thermal shock the change in resistance shall not exceed 0.25 percent +0.01 ohm. 3.6 Low temperature operation. When resistors are tested as specified in 4.9, the low temperature operation the change in resistance shall not exceed 0.02 percent +0.0
23、1 ohm. 3.7 Resistance to solder heat. When resistors are tested as specified in 4.10, the resistance to bonding exposure the change in resistance shall not exceed 0.25 percent +0.01 ohm. 3.8 Resistance temperature characteristic. When resistors are tested as specified in 4.11, the RTC shall not exce
24、ed the values specified (see 3.3.6). 3.9 Short time overload. When resistors are tested as specified in 4.12, the short time overload the change in resistance shall not exceed 0.5 percent +0.01 ohm. 3.10 Moisture resistance. When resistors are tested as specified in 4.13, the moisture resistance the
25、 change in resistance shall not exceed 0.5 percent +0.01 ohm. 3.11 High temperature exposure. When resistors are tested as specified in 4.14 the high temperature exposure the change in resistance shall not exceed 0.5 percent +0.01 ohm. 3.12 Life. When resistors are tested as specified in 4.15, the l
26、ife the change in resistance shall not exceed 0.5 percent +0.01 ohm. 3.13 Solderability. The requirement for solderability shall be as specified in 4.8 and 4.4.1.1.3. 3.14 Marking. Marking is not required on this resistor; however, each waffle pack shall be marked with the PIN assigned herein (see 1
27、.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. 3.15 Recycled, recovered, or environmentally preferable materials. Recycled, re
28、covered, 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 life cycle costs. 3.16 Certificate of compliance. A certificate of compliance
29、 shall be required from manufacturers requesting to be listed as suggested sources of supply. 3.17 Workmanship. Resistors shall be processed in such a manner as to be uniform in quality and be free from defects that will affect life, serviceability, or appearance. 4. VERIFICATION 4.1 Product assuran
30、ce 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 applicable to this document. Provided by IHSNot for ResaleNo reproduction or networking
31、 permitted without license from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 03027 REV PAGE 6 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
32、inspection. 4.4.1 Inspection of product for delivery. Inspection of product for delivery shall consist of groups A and B inspections. 4.4.1.1 Group A inspection. Group A inspection shall consist of the inspections specified in table III, and shall be made on the same set of sample units, in the orde
33、r shown. Part per million testing and verification as specified in MIL-PRF-55342 is not applicable to this document. TABLE III. Group A inspection. Inspection Requirement paragraph Method paragraph Sampling procedure Subgroup I Thermal shock DC resistance 3.5 3.4 4.7 4.6 100 percent Subgroup II Visu
34、al inspection 3.2, 3.14, 3.17 4.5 13 samples, 0 failures Subgroup III Solderability 3.13 4.8 5 samples 0 failures 4.4.1.1.1 Subgroup I. Subgroup I tests shall be performed on 100 percent of the product supplied under this document. Resistors that are out of resistance tolerance, or which experience
35、a change in resistance greater than that permitted for the tests of this subgroup shall be removed from the lot. Lots having more than 5 percent total rejects, due to exceeding the specified resistance tolerance change limit shall not be furnished on contracts. 4.4.1.1.2 Subgroup II. A sample of 13
36、parts shall be randomly selected, if one or more defects are found, the lot shall be rescreened and defects removed. A new sample of 13 parts shall then be randomly selected. If one or more defects are found in this second sample, the lot shall be rejected and shall not be supplied against this docu
37、ment. 4.4.1.1.3 Subgroup III. A sample of five parts shall be randomly selected, if one or more defects are found, the lot shall be rejected/rescreened in accordance with MIL-PRF-55342. 4.4.1.2 Group B inspection. Group B inspection shall consist of the inspections specified in table IV, and shall b
38、e made on the same set of sample units, in the order shown. 4.4.1.2.1 Certification. The procuring activity may accept a certificate of compliance in lieu of group B inspection (see 6.2d). 4.4.1.2.2 Action in case of failure. If any of the subgroups fail the group B inspection and an appropriate lot
39、 screen can be established, the lot shall be screened and a new set of samples (see table IV) from the screened lot, shall be submitted to the subgroup that failed. If one or more defects are found in the resubmitted samples, the lot shall be rejected and shall not be supplied to this specification.
40、 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. 03027 REV PAGE 7 4.4.1.2.3 Disposition of sample units. Sample units which have been subjected to group B inspections
41、shall not be supplied to this specification. 4.5 Visual and mechanical examination. Resistors shall be examined to verify that the materials, design, construction, physical dimensions, marking, and workmanship are in accordance with the applicable requirements of MIL-PRF-55342. 4.6 DC resistance. DC
42、 resistance shall be tested in accordance with MIL-PRF-55342. 4.7 Thermal shock. Thermal shock shall be tested in accordance with MIL-PRF-55342. TABLE IV. Group B inspection. Inspection Requirement paragraph Method paragraph Sampling procedure Subgroup I Life 3.12 4.15 30 samples, 0 failures Subgrou
43、p II Thermal shock Low temperature operation Resistance to soldering heat Resistance temperature characteristic Short time overload Moisture resistance 3.5 3.6 3.7 3.8 3.9 3.10 4.7 4.9 4.10 4.11 4.12 4.13 30 samples, 0 failures Subgroup III High temperature exposure 3.11 4.14 30 samples 0 failures 4
44、.8 Solderability. Solderability shall be tested in accordance with MIL-PRF-55342 and 4.4.1.1.3 herein. 4.9 Low temperature operation. Low temperature operation shall be tested in accordance with MIL-PRF-55342. 4.10 Resistance to soldering heat. Resistance to soldering heat shall be tested in accorda
45、nce with MIL-PRF-55342. 4.11 Resistance temperature characteristic. Resistance temperature characteristic shall be tested in accordance with MIL-PRF-55342. 4.12 Short time overload. Short time overload shall be tested in accordance with MIL-PRF-55342. 4.13 Moisture resistance. Moisture resistance sh
46、all be tested in accordance with MIL-PRF-55342. 4.14 High temperature exposure. High temperature exposure shall be tested in accordance with MIL-PRF-55342. 4.15 Life. Life shall be tested in accordance with MIL-PRF-55342. Provided by IHSNot for ResaleNo reproduction or networking permitted without l
47、icense from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 03027 REV PAGE 8 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 perfo
48、rmed 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 activity within the Military Department or Defense Agency, or within t
49、he 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 general or explanatory nature that may be helpful, but is not mandatory.) 6.1 Intended
