1、 REVISIONS LTR DESCRIPTION DATE APPROVED A Add requirements for space level and update to present DoD policy requirements. 27 JAN 2006 Michael A. Radecki B Paragraph 4.3.3; change HTE from 1000 hours to 100 hours. Add pure tin prohibition. Editorial corrections throughout. 14 APR 2006 Michael A. Rad
2、ecki C Add vendor. Extend vendors resistance range and tolerances. Add pulse application paragraph. Editorial corrections throughout 5 AUG 2011 Michael A. Radecki D Correct paragraph 4.4 example 2 critical resistance value sign to “”. Editorial change throughout. 14 FEB 2013 Michael A. Radecki Prepa
3、red in accordance with ASME Y14.100 Source control drawing REV STATUS OF PAGES REV D D D D D D D D D PAGES 1 2 3 4 5 6 7 8 9 PMIC N/A PREPARED BY Dennis L. Cross DESIGN ACTIVITY: DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OH Original date of drawing CHECKED BY Andrew R. Ernst TITLE RESISTOR, CHIP, FI
4、XED, FILM, MOISTURE RESISTANT, MILITARY and SPACE LEVEL, STYLE 0402 2 March 2004 APPROVED BY Kendall A. Cottongim SIZE A CODE IDENT. NO. 037Z3 DWG NO. 04008 REV D PAGE 1 OF 9 AMSC N/A 5905-2013-E24 CURRENT DESIGN ACTIVITY CAGE CODE 037Z3 HAS CHANGED NAMES TO: DLA LAND AND MARITIME COLUMBUS, OHIO 432
5、18-3990 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. 04008 REV D PAGE 2 1. SCOPE 1.1 Scope. This drawing describes the requirements for a 0.040 by 0.020 chip resist
6、or, which is resistant to the degrading effects of moisture while under power. 1.2 Part or Identifying Numbers (PINs). The complete PINs are shown in the examples below. The first example is for general military applications. (NOTE: This PIN is the original PIN shown in previous revisions of this dr
7、awing). The second example is for space type applications and requires adding a code letter to the end of the original PIN. NOTE: Example of military level PIN. 04008 - * * * * | | | | | | | | | | Drawing number Characteristic (see 3.3.1) Resistance (see 3.3.2) Tolerance (see 3.3.3) Termination mate
8、rial (see 3.3.4) NOTE: Example of space level PIN. 04008 - * * * * * | | | | | | | | | | | | Drawing number Characteristic (see 3.3.1) Resistance (see 3.3.2) Tolerance (see 3.3.3) Termination material (see 3.3.4) Space levels (see 3.3.5) 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specif
9、ications and standards. The following specifications and standards form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-PRF-55342 - Resistors, C
10、hip, Fixed, Film, Nonestablished Reliability, Established Reliability, Space Level, General Specification for. MIL-PRF-55342/11 - Resistors, Chip, Fixed, Film, Nonestablished Reliability, Established Reliability, Space Level, Style 0402. DEPARTMENT OF DEFENSE STANDARDS MIL-STD-690 - Failure Rate Sam
11、pling Plans and Procedures. MIL-STD-790 - Standard Practice for Established Reliability and High Reliability QPL Systems. * (Copies of these documents are available online at https:/assist.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadel
12、phia, PA 19111-5094.) 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. 04008 REV D PAGE 3 3 * 2.2 Order of precedence. Unless otherwise noted herein or in the contract,
13、 in the event of a conflict between the text of this document and the references cited herein (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 obta
14、ined. 3. REQUIREMENTS 3.1 Item requirements. The individual item requirements shall be in accordance with MIL-PRF-55342, and as specified herein. 3.2 Interface and physical dimensions. The resistor shall meet the interface and physical dimensions as specified in MIL-PRF-55342 and herein (see figure
15、1). 3.2.1 Design documentation. The design documentation shall be in accordance with MIL-PRF-55342 and unless otherwise specified in the contract or purchase order, shall be retained by the manufacturer and available for review by the acquiring activity or contractor upon request. 3.3 Electrical cha
16、racteristics. 3.3.1 Resistance temperature characteristic. The resistance temperature characteristic shall be identified by a single letter as specified in MIL-PRF-55342 and herein (see 6.7). 3.3.2 Resistance. The nominal resistance expressed in ohms is identified by four digits; the first three dig
17、its 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 when fractional values of an ohm are required, the letter “R“ shall be substituted for one of the significant figures. The resistance value designation
18、s are shown in table I. Minimum and maximum resistance values shall be as specified in MIL-PRF-55342. Resistance values not listed in the “10 to 100“ decade table of MIL-PRF-55342 for the appropriate resistance tolerance shall be considered as not conforming to the specification. TABLE I. Resistance
19、 value designations. Designation Resistance ohms 1R00 to 9R88 incl. 10R0 to 98R8 incl. 1000 to 9880 incl. 1001 to 9881 incl. 1002 to 9882 incl. 1003 to 9883 incl. 1004 to 9884 incl. 1005 to 2205 incl. 1.00 to 9.88 incl. 10.0 to 98.8 incl. 100.0 to 988.0 incl. 1,000.0 to 9,880.0 incl. 10,000.0 to 98,
20、800.0 incl. 100,000.0 to 988,000.0 incl. 1,000,000.0 to 9,880,000.0 incl. 10,000,000.0 to 22,000,000.0 incl. 3.3.2.1 Resistance range. The resistance range shall be as specified in MIL-PRF-55342/11 and herein (see 6.7). 3.3.3 Resistance tolerance. Resistors are available in resistance tolerances as
21、specified in table II and herein (see 6.7). 3.3.4 Termination material. Termination material shall be identified by a single letter as specified in MIL-PRF-55342 and herein (see 6.7). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DEFENSE SUPPLY CEN
22、TER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 04008 REV D PAGE 4 4 TABLE II. Resistance tolerance. Symbol Resistance tolerance percent B F G J K +0.1 +1.0 +2.0 +5.0 +10.0 3.3.4.1 Pure tin. The use of pure tin, as an underplate or final finish is prohibited both internally and exte
23、rnally. 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 6.3). 3.3.5 Product level testing. The product level testing shall be designated by the military and space level PINs (see 1.2, 4.3.2, and 4
24、.3.3). 3.3.6 Power rating. The power rating for this chip resistor shall be as specified in MIL-PRF-55342/11. 3.3.7 Voltage rating. The maximum continuous working voltage shall be as specified in MIL-PRF-55342/11. 3.3.8 Power moisture resistance. When resistors are tested as specified in 4.4, there
25、shall be no evidence of mechanical damage; the change in resistance between the initial and final measurements shall not exceed the limits as specified in the moisture resistance requirements of MIL-PRF-55342. Samples subjected to this test shall not be delivered on the contract or order. 3.3.9 Outg
26、assing (space levels A and T). Outgassing shall be performed as specified in MIL-PRF-55342. 3.4 Marking. Marking is not required on the resistor; however, each unit package shall be marked with the PIN assigned herein (see 1.2), vendor CAGE code, and date and lot codes. 3.5 Manufacturers eligibility
27、 (military applications). The approved sources of supply listed on this drawing shall be qualified to at least one product on the Qualified Products List for MIL-PRF-55342. They shall have successfully passed the power moisture resistance test as witnessed and certified by an official company repres
28、entative with 30 samples (10 low, 10 critical, 10 high) with zero defects. If the manufacturer has already performed the power moisture resistance test to any of the following drawings (94012, 94013, 94014, 94015, 94016, 94017, 94018, 94019, 94025, 94026, 04007, 04009 or 07010) then performance of t
29、he power moisture resistance test as a prerequisite for being a source of supply is not required. 3.5.1 Manufacturers eligibility (space levels A and T). Only approved sources of supply qualified to “T” failure rate level of MIL-PRF-55342 and approved to the general military level of this drawing ma
30、y supply to space level codes A and T. Furthermore all testing for these levels shall be done on a production lot basis as defined in MIL-PRF-55342. Test deletion or reduction, which may be granted for ER level product, is not allowed for space level codes A and T of this document. Provided by IHSNo
31、t for ResaleNo reproduction or networking permitted without license from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 04008 REV D PAGE 5 5 Configuration A Configuration B Configuration Dimension A Inches Dimension B Inches Dimension C Inches Dimension D
32、Inches Dimension E Inches A 0.041 0.006 0.022 0.005 0.010/0.033 0.010 0.005 N/A B 0.042 0.008 0.022 0.005 0.010/0.033 0.010 0.005 0.010 0.005 NOTES: 1. Dimensions are in Inches. 2. Millimeter equivalents are given for general information only. 3. The pictorial view of the styles above are given as r
33、epresentative 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. FIGURE 1. Chip resistor. Inches mm 0.005 0.13 0.006 0.15 0.008 0.20 0.010 0.25 0.022 0.56 0.033 0.84 0.0
34、41 1.04 0.042 1.07 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. 04008 REV D PAGE 6 6 3.6 Recycled, recovered, or environmentally preferable materials. Recycled, rec
35、overed, 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. 3.7 Workmanship. Resistors shall be uniform in quality and f
36、ree from any defects that will 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 Product level qualification. The pr
37、oduct level qualification specified in MIL-PRF-55342 and MIL-STD-690 is not applicable to this document. 4.3 Conformance inspection. 4.3.1 Inspection of product for delivery (military level). Inspection of product for delivery for each PIN ordered shall consist of group A inspection and group B insp
38、ection of MIL-PRF-55342, ER level. Additionally 5 samples of each PIN ordered shall be subjected to the power moisture resistance test specified herein with 0 defects allowed. 4.3.1.1 Certification (military level only). The procuring activity may accept a certificate of compliance in lieu of perfor
39、ming group B inspection and the power moisture resistance test. 4.3.2 Inspection of product for delivery (space level code A). Inspection of product for delivery for each PIN ordered shall consist of group A inspection and group B inspection of MIL-PRF-55342, space level. Additionally 10 samples of
40、each PIN ordered shall be subjected to the power moisture resistance test specified herein (see 4.4) with 0 defects allowed. The group C life test shall be performed as specified in MIL-PRF-55342 except the test shall be from each production lot for 1000 hours, 22 samples for each value ordered with
41、 0 defects. NOTE: Test samples subjected to Group B, Group C, and the power moisture resistance test herein shall not be delivered on the contract or order. 4.3.3 Inspection of product for delivery (space level code T). Inspection of product for delivery for each PIN ordered (each production lot) sh
42、all consist of group A, group B, and group C inspection of MIL-PRF-55342, space level. Resistance to soldering heat and resistance to bonding exposure shall be as specified in MIL-PRF-55342 except 10 samples for each PIN ordered, followed by power moisture resistance as specified herein (see 4.4) pe
43、rformed on the same set of samples with 0 defects for the subgroup. The group C life test shall be performed as specified in MIL-PRF-55342 except the test shall be for 1000 hours, 22 samples for each value ordered with 0 defects. Thermal shock and low temperature operation shall be as specified in M
44、IL-PRF-55342 except 10 samples for each PIN ordered with 0 defects. High temperature exposure shall be as specified in MIL-PRF-55342 except the test shall be for 100 hours, 10 samples with 0 defects. NOTE: Test samples subjected to Group B, Group C, and the power moisture resistance test herein shal
45、l not be delivered on the contract or order. 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. 04008 REV D PAGE 7 7 4.4 Power moisture resistance. Power moisture resista
46、nce test shall be performed as specified in MIL-PRF-55342 except the loading voltage shall be as follows: Loading voltage: The loading voltage shall be equal to 10 percent rated power for resistance values less than or equal to the critical resistance value as shown in example number 1. For values g
47、reater than or equal to the critical resistance value the loading voltage shall be as shown in example number 2. EXAMPLE 1 EXAMPLE 2 Characteristic: “K“ Characteristic: “K“ Rated wattage: 0.040 watts (P) Voltage rating: 25 volts (V) Value: 2000 ohms (R) * PRV 1.= (for “R” critical res.) 1.=V x V (fo
48、r “R” critical res.) = ( )( )200005.1. = .316 x 25 = 8 = 7.9 volts = 2.83 volts 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 M
49、IL-PRF-55342. 4.6 Data retention (codes A res. values 100 ohms to 200 kohms, res. tol. 0.1 pct.; res. values 5.62 ohms to 200 kohms, res. tol. 1 pct.; 5.6 ohms to 220 kohms, res. tol. 2, 5, and 10 pct., term. B and W, all PINs (see 1.2). Char. K and M; res. values 100 ohms thru 200 kohms, res. tol. 0.1 pct.; res. values 1.0 ohm to 22.0 Megohms,
