1、 REVISIONS LTR DESCRIPTION DATE APPROVED A Add new source of supply. Editorial corrections throughout. 15 Dec 1994 Edward H. Back B Add new source of supply. Editorial corrections throughout. 31 Jan 1997 David E. Moore C Extend maximum qualified resistance for present source of supply. Update to pre
2、sent DoD policy requirements. 25 Feb 1998 David E. Moore D Changes in accordance with NOR 5905-R002-99, added new source of supply. 11 Jun 1999 Kenneth A. Bernier E Five year document review. Update to present DoD policy requirements. 22 Jan 2004 Kendall A. Cottongim F Change vendor part number. Upd
3、ate to present DoD policy requirements. 28 Jun 2004 Kendall A. Cottongim G Add requirements for space level and update to present DoD policy requirements. 31 Jan 2006 Michael A. Radecki H Paragraph 4.3.3; change HTE from 1000 hours to 100 hours. Add pure tin prohibition. Editorial corrections throug
4、hout. 14 Apr 2006 Michael A. Radecki J Extend vendors resistance range and tolerances. Add pulse application paragraph. Editorial corrections throughout. 24 Mar 2011 Michael A. Radecki K Correct paragraph 4.4 example 2 critical resistance value sign to “”. Editorial change throughout. 14 Feb 2013 Mi
5、chael A. Radecki Prepared in accordance with ASME Y14.100 Source control drawing REV STATUS OF PAGES REV K K K K K K K K K PAGES 1 2 3 4 5 6 7 8 9 PMIC N/A PREPARED BY Dennis L. Cross DEFENSE ELECTRONIC SUPPLY CENTER DAYTON, OH Original date of drawing CHECKED BY Andrew R. Ernst TITLE RESISTOR, CHIP
6、, FIXED, FILM, MOISTURE RESISTANT, MILITARY and SPACE LEVEL, STYLE 0705 7 September 1994 APPROVED BY David E. Moore SIZE A CODE IDENT. NO. 14933 DWG NO. 94015 REV K PAGE 1 OF 9 AMSC N/A 5905-2013-E16 CURRENT DESIGN ACTIVITY CAGE CODE 037Z3 HAS CHANGED NAMES TO: DLA LAND AND MARITIME COLUMBUS, OHIO 4
7、3218-3990 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. 94015 REV K PAGE 2 1. SCOPE 1.1 Scope. This drawing describes the requirements for a 0.075 by 0.050 chip resis
8、tor, 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 d
9、rawing). 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. 94015- * * * * | | | | | | | | | | Drawing number Characteristic (see 3.3.1) Resistance (see 3.3.2) Tolerance (see 3.3.3) Termination mate
10、rial (see 3.3.4) NOTE: Example of space level PIN. 94015- * * * * * | | | | | | | | | | | | 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 Specifi
11、cations 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, Ch
12、ip, Fixed, Film, Nonestablished Reliability, Established Reliability, Space Level, General Specification for. MIL-PRF-55342/6 - Resistors, Chip, Fixed, Film, Nonestablished Reliability, Established Reliability, Space Level, Style 0705. DEPARTMENT OF DEFENSE STANDARDS MIL-STD-690 - Failure Rate Sampl
13、ing 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, Philadelph
14、ia, PA 19111-5094.) 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. 94015 REV K PAGE 3 * 2.2 Order of precedence. Unless otherwise noted herein or in the contract, in t
15、he 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 obtained.
16、 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 1). 3
17、.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 characte
18、ristics. 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 digits r
19、epresent 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 designations are
20、 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 valu
21、e 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 98,800.0
22、 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-55342/6 and herein (see 6.7). 3.3.3 Resistance tolerance. Resistors are available in resistance tolerances as specif
23、ied 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 ELECTRONIC SUPPL
24、Y CENTER DAYTON, OHIO SIZE A CODE IDENT NO. 14933 DWG NO. 94015 REV K PAGE 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 externally. T
25、in 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 4.3.3). 3.
26、3.6 Power rating. The power rating for this chip resistor shall be as specified in MIL-PRF-55342/6. 3.3.7 Voltage rating. The maximum continuous working voltage shall be as specified in MIL-PRF-55342/6. 3.3.8 Moisture resistance. When resistors are tested as specified in 4.4, there shall be no evide
27、nce 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 Outgassing (space lev
28、els 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(military applica
29、tions). 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 representative with 30 s
30、amples (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, 94016, 94017, 94018, 94019, 94025, 94026, 04007, 04008, 04009 or 07010) then performance of the power moisture
31、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 may supply to space
32、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 IHSNot for ResaleNo rep
33、roduction or networking permitted without license from IHS-,-,-DEFENSE ELECTRONIC SUPPLY CENTER DAYTON, OHIO SIZE A CODE IDENT NO. 14933 DWG NO. 94015 REV K PAGE 5 Configuration A Configuration B Configuration Dimension A mm Dimension B mm Dimension C mm Dimension D mm Dimension E mm A 1.91 +0.13 1.
34、27 +0.13 0.30/0.76 0.38 +0.13 N/A B 2.03 +0.15 1.27 +0.13 0.38/0.84 0.41 +0.20 0.38 +0.13 NOTES: 1. Dimensions are in millimeters. 2. Inch equivalents are given for general information only. 3. The pictorial view of the styles above are given as representative of the envelope of the item. Slight dev
35、iations 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. Mm Inches 0.13 0.005 0.15 0.006 0.20 0.008 0.30 0.012 0.38 0.015 0.41 0.016 0.76 0.030 0.84 0.033 1.27 0.050 1 91 075 Provided by IH
36、SNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DEFENSE ELECTRONIC SUPPLY CENTER DAYTON, OHIO SIZE A CODE IDENT NO. 14933 DWG NO. 94015 REV K PAGE 6 3.6 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferabl
37、e 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 free from any defects that will aff
38、ect 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 product level qualification specifie
39、d 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 inspection of MIL-PRF-55342, ER level.
40、 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 performing group B inspection and the po
41、wer moisture resistance test (see 6.2d). 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 each PIN ordered shall
42、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 0 defects. NOTE: Test
43、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) shall consist of group A,
44、 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) performed on the same set
45、 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 MIL-PRF-55342 except 10
46、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 shall not be delivered on t
47、he contract or order. 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. 94015 REV K PAGE 7 4.4 Power moisture resistance. Power moisture resistance test shall be performe
48、d 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 greater than or equal to th
49、e critical resistance value the loading voltage shall be as shown in example number 2. EXAMPLE 1 EXAMPLE 2 Characteristic: “K“ Characteristic: “K“ Rated wattage: .1 watt (P) Voltage rating: 40 volts (V) Value: 2000 ohms (R) * PRV 1.= (for “R” critical res.) 1.=V x V (for “R” critical res.) = ( )( )20001.1. = .316 x 40 = 20 = 12.64 volts = 4.47 v
