1、 REVISIONS LTR DESCRIPTION DATE APPROVED A Add new source of supply. Editorial corrections throughout. 15 Dec 1994 Edward H. Back B Remove source of supply. Editorial corrections throughout. 13 Jul 1995 David E. Moore C Add characteristics E and H and terminations C and U to source of supply (see 6.
2、5). Update to present DoD policy requirements. 22 Aug 2000 Kendall A. Cottongim D Five year document review. Update to present DoD policy requirements. 22 Jan 2004 Kendall A. Cottongim E Add new source of supply. 13 Feb 2004 Kendall A. Cottongim F Add requirements for space level and update to prese
3、nt DoD policy requirements. 27 Jan 2006 Michael A. Radecki G Paragraph 4.3.3; change HTE from 1000 hours to 100 hours. Add pure tin prohibition. Editorial corrections throughout. 14 Apr 2006 Michael A. Radecki H Extend vendors resistance range and tolerances. Add pulse application paragraph. Editori
4、al corrections throughout. 17 Nov 2011 Michael A. Radecki J Correct paragraph 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
5、Prepared in accordance with ASME Y14.100 Source control drawing REV STATUS OF PAGES REV J J J J J J J J J 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, MO
6、ISTURE RESISTANT, MILITARY and SPACE LEVEL, STYLE 0502 7 September 1994 APPROVED BY David E. Moore SIZE A CODE IDENT. NO. 14933 DWG NO. 94025 REV J PAGE 1 OF 9 AMSC N/A 5905-2013-E21 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DEFENSE ELECTRONIC
7、SUPPLY CENTER DAYTON, OHIO SIZE A CODE IDENT NO. 14933 DWG NO. 94025 REV J PAGE 2 1. SCOPE 1.1 Scope. This drawing describes the requirements for a 0.050 by 0.020 chip resistor, which is resistant to the degrading effects of moisture while under power. 1.2 Part or Identifying Numbers (PINs). The com
8、plete 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 drawing). The second example is for space type applications and requires adding a code letter to the end of the original PIN. NO
9、TE: Example of military level PIN. 94025- * * * * | | | | | | | | | | 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 di
10、git 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 shown in table I. Minimum and maximum resis
11、tance 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 value designations. Designation Resistance ohms
12、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 incl. 100,000.0 to 988,000.0 incl. 1,000,00
13、0.0 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-55342/1 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
14、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 SUPPLY CENTER DAYTON, OHIO SIZE A CODE IDENT NO.
15、14933 DWG NO. 94025 REV J PAGE 4 TABLE II. Resistance tolerance. 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 minim
16、um 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-55342/1. 3.3.7 Voltage ra
17、ting. The maximum continuous working voltage shall be as specified in MIL-PRF-55342/1. 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 exceed
18、 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 require
19、d 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 on t
20、he 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 power
21、moisture resistance test to any of the following drawings (94012, 94013, 94014, 94015, 94016, 94017, 94018, 94019, 94026, 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 eligibili
22、ty (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 defi
23、ned 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. Symbol Resistance tolerance percent B F G J K +0.1 +1.0 +2.0 +5.0 +10.0 Provided by IHSNot for ResaleNo reproduction or networking permitted wit
24、hout license from IHS-,-,-DEFENSE ELECTRONIC SUPPLY CENTER DAYTON, OHIO SIZE A CODE IDENT NO. 14933 DWG NO. 94025 REV J PAGE 5 Configuration A Configuration B Configuration Dimension A mm Dimension B mm Dimension C mm Dimension D mm Dimension E mm A 1.27 +0.13 0.64 +0.13 0.25/0.76 0.25 +0.13 N/A B 1
25、.40 +0.15 0.64 +0.13 0.25/0.84 0.25 +0.13 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 deviations from the outline shown, which
26、 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 .005 0.15 .006 0.25 .010 0.38 .015 0.64 .025 0.76 .030 0.84 .033 1.27 .050 1.40 .055 Provided by IHSNot for ResaleNo reproduction or networking permitted
27、without license from IHS-,-,-DEFENSE ELECTRONIC SUPPLY CENTER DAYTON, OHIO SIZE A CODE IDENT NO. 14933 DWG NO. 94025 REV J PAGE 6 3.6 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possib
28、le, 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 affect life, serviceability, or appearance. 4. VERIFICATIO
29、N 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 specified in MIL-PRF-55342 and MIL-STD-690 is not applicable to
30、 this document. 4.3 Conformance inspections. 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. Additionally 5 samples of each PIN ordered shall be s
31、ubjected 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 power moisture resistance test (see 6.2d). 4.3.2 Inspect
32、ion 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 be subjected to the power moisture resistance test spe
33、cified 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 samples subjected to Group B, Group C, and the power m
34、oisture 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, group B, and group C inspection of MIL-PRF-55342, spa
35、ce 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 of samples with 0 defects for the subgroup. The group
36、 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 samples for each PIN ordered with 0 defects. High temp
37、erature 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 the contract or order. Provided by IHSNot for ResaleNo
38、reproduction or networking permitted without license from IHS-,-,-DEFENSE ELECTRONIC SUPPLY CENTER DAYTON, OHIO SIZE A CODE IDENT NO. 14933 DWG NO. 94025 REV J PAGE 7 4.4 Power moisture resistance. Power moisture resistance test shall be performed as specified in MIL-PRF-55342 except the loading vol
39、tage 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 the critical resistance value the loading voltage shall
40、be as shown in example number 2. EXAMPLE 1 EXAMPLE 2 Characteristic: “K“ Characteristic: “K“ Rated wattage: .050 watts (P) Voltage rating: 40 volts (V) Value: 2000 ohms (R) * PRV 1.= (for “R” critical res.) 1.=V x V (for “R” critical res.) = ( )( )200005.1. = .316 x 40 = 10 = 12.64 volts = 3.16 volt
41、s 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 Data retention (codes A res. values 5.62 ohms to 150 kohms,
42、res. tol. 1.0 pct; res. Values 5.6 ohms to 150 kohms, res. Tol. 2.0, 5.0, res. Values 1.0 ohm to 22.0 megohms, res. tol. 1.0, 2.0, 5.0, and 10.0 pct., terms. B, C, G, U, and W, all PINs (see 1.2). H0502*(DEC025) 56235 State of the Art, Inc. 2470 Fox Hill Rd. State College, PA 16803-1797 Char. E, H,
43、K, res. values 1 ohm thru 200 kohms, res. tol. 1 pct.; term. B, G, U, C and W, all PINs (see 1.2). Char. K and M; res. values 1 ohm thru 180 kohms, res. tol. 2, 5, and 10 pct.; term. B, G, U, C and W, all PINs (see 1.2). WA81SM-*-NS62C WA81SM-*-NUC WA81PG-*-UC WA81PS-*-UC MSR81G-*-UC 50316 Mini-Syst
44、em, Inc. Thick Film Division PO Box 69 20 David Road North Attleboro, MA 02761-0069 Char. M, res. values 1 ohm thru 9.1 ohms, res. tol. 2, 5, and 10 pct., term. B, all PINs (see 1.2) Char. K and M, res. values 10 ohms thru 22 megohms, res. tol. 1, 2. 5, and 10 pct., term. B, all PINs (see 1.2). RCWP
45、-0502-69 RCWP-0502-81 RCWP-0502-82 SH903 Vishay Dale Electronics PO Box 609 Columbus, NE 68602-0609 Plant: Vishay Israel, Ltd. Emek-Sara “B” Industrial Park Beer Sheva, Israel 84874 1/ Caution: Parts must be purchased to the DLA Land and Maritime PIN to assure that all performance requirements and tests are met. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
