DLA DESC-DWG-94026 REV H-2013 RESISTOR CHIP FIXED FILM MOISTURE RESISTANT MILITARY and SPACE LEVEL STYLE 1505.pdf
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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 Five year document review. Update to present DoD policy requirements. 22 Jan 2004 Kendall A. Cottongim E Add requirements for space level and update to present DoD policy requirements. 27 Jan 2006 Michael A. Radecki F Paragraph 4.3.3; change
3、 HTE from 1000 hours to 100 hours. Add pure tin prohibition. Editorial corrections throughout. 14 Apr 2006 Michael A. Radecki G Remove vendor. Extend vendors resistance range and tolerances. Add pulse application paragraph. Editorial corrections throughout. 15 Jun 2011 Michael A. Radecki H Correct p
4、aragraph 4.4 example 2 critical resistance value sign to “”. Editorial change throughout. 14 FEB 2013 Michael A. Radecki CURRENT DESIGN ACTIVITY CAGE CODE 037Z3 HAS CHANGED NAMES TO: DLA LAND AND MARITIME COLUMBUS, OHIO 43218-3990 Prepared in accordance with ASME Y14.100 Source control drawing REV S
5、TATUS OF PAGES REV H H H H H H H H H 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, FIXED, FILM, MOISTURE RESISTANT, MILITARY and SPACE LEVEL, STYLE 1505 7 September 19
6、94 APPROVED BY David E. Moore SIZE A CODE IDENT. NO. 14933 DWG NO. 94026 REV H PAGE 1 OF 9 AMSC N/A 5905-2013-E22 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. 94026
7、REV H PAGE 2 1. SCOPE 1.1 Scope. This drawing describes the requirements for a 0.150 by 0.050 chip resistor, 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
8、general military applications. (NOTE: This PIN is the original PIN shown in previous revisions of this drawing). 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. 94026- * * * * | | | | | | | | | |
9、 Drawing number Characteristic (see 3.3.1) Resistance (see 3.3.2) Tolerance (see 3.3.3) Termination material (see 3.3.4) NOTE: Example of space level PIN (codes A the first three digits represent significant figures and the last digit specifies the number of zeros to follow. When the value of resist
10、ance 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 shown in table I. Minimum and maximum resistance values shall be as specified in MIL-PRF-55342. Resistance value
11、s 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 value designations. Designation Resistance ohms 1R00 to 9R88 incl. 10R0 to 98R8 incl. 1000 to 9880 incl. 1001 to 9881
12、 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 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 R
13、esistance range. The resistance range shall be as specified in MIL-PRF-55342/4 and herein (see 6.7). 3.3.3 Resistance tolerance. Resistors are available in resistance tolerances as specified in table II and herein (see 6.7). 3.3.4 Termination material. Termination material shall be identified by a s
14、ingle 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 SUPPLY CENTER DAYTON, OHIO SIZE A CODE IDENT NO. 14933 DWG NO. 94026 REV H PAGE 4 4 TABLE II. Resistance tolerance. Sy
15、mbol 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. Tin content of resistor components and solder shall not exceed 97 percent, by mass. Tin shall be alloyed with a
16、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). 3.3.6 Power rating. The power rating for this chip resistor shall be as specified in MIL-PRF-55342/4. 3.3.7 Volta
17、ge rating. The maximum continuous working voltage shall be as specified in MIL-PRF-55342/4. 3.3.8 Power moisture resistance. When resistors are tested as specified in 4.4, there shall be no evidence of mechanical damage; the change in resistance between the initial and final measurements shall not e
18、xceed 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 levels A and T). Outgassing shall be performed as specified in MIL-PRF-55342. 3.4 Marking. Marking is not re
19、quired 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 applications). The approved sources of supply listed on this drawing shall be qualified to at least one product
20、 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 samples (10 low, 10 critical, 10 high) with zero defects. If the manufacturer has already performed the p
21、ower moisture resistance test to any of the following drawings (94012, 94013, 94014, 94015, 94016, 94017, 94018, 94019, 94025, 04007, 04008, 04009 or 07010) then performance of the power moisture resistance test as a prerequisite for being a source of supply is not required. 3.5.1 Manufacturers elig
22、ibility (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 level codes A and T. Furthermore all testing for these levels shall be done on a production lot basis as
23、 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 reproduction or networking permitted without license from IHS-,-,-DEFENSE ELECTRONIC SUPPLY CENTER DAYTON,
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