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. 31 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 Extend vendors resistance range and tolerances. Add pulse application paragraph. Editorial corrections throughout. 14 Oct 2011 Michael A. Radecki H Correct paragraph 4.4 ex
4、ample 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 STATUS OF PAGES
5、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 0505 7 September 1994 APPROVED BY
6、David E. Moore SIZE A CODE IDENT. NO. 14933 DWG NO. 94012 REV H PAGE 1 of 9 AMSC N/A 5905-2013-E13 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. 94012 REV H PAGE 2 1.
7、 SCOPE 1.1 Scope. This drawing describes the requirements for a 0.050 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 general militar
8、y 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. 94012- * * * * | | | | | | | | | | Drawing number
9、 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 (codes A the first three digits represent significant figures and the last digit specifies the number of zeros to follow. When the value of resistance is less than 1
10、00 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 values not listed in the
11、 “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 incl. 1002 to 9882
12、 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 Resistance range. Th
13、e resistance range shall be as specified in MIL-PRF-55342/2 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 single letter as spe
14、cified 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. 94012 REV H PAGE 4 TABLE II. Resistance tolerance. 3.3.4.1 Pure tin. The u
15、se 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 minimum of 3 percent lead, by mass (see 6.3). 3.3.5 Product level testing. The product level
16、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-55342/2. 3.3.7 Voltage rating. The maximum continuous working voltage shall be as specified in MIL-PRF-55342/2. 3
17、.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 the limits as specified in the moisture resistance requirements of MIL-PRF-55342. Sampl
18、es subjected to this test shall not be delivered on the contract or order. 3.3.9 Outgassing (space level codes 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
19、 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 the Qualified Products List for MIL-PRF-55342. They shall have successfully passed t
20、he 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 moisture resistance test to any of the following drawings (94013, 94014, 94015, 940
21、16, 94017, 94018, 94019, 94025, 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 eligibility (space levels A and T). Only approved sources of supply qualified to “T” failure
22、 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 defined in MIL-PRF-55342. Test deletion or reduction, which may be granted for ER level
23、 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 without license from IHS-,-,-DEFENSE ELECTRONIC SUPPLY CENTER DAYTON, OHIO SIZE A CODE
24、 IDENT NO. 14933 DWG NO. 94012 REV H 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 1.27 +0.13 0.25/0.76 0.25 +0.13 N/A B 1.40 +0.15 1.27 +0.13 0.30/0.84 0.25 +0.13 0.38 +0.13 NOTES: 1. Dimensions are in mi
25、llimeters. 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 aspects of the d
26、evice are acceptable. FIGURE 1. Chip resistor. mm Inches 0.13 .005 0.15 .006 0.25 .010 0.30 .012 0.38 .015 0.76 .030 0.84 .033 1.27 .050 1.40 .055 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DEFENSE ELECTRONIC SUPPLY CENTER DAYTON, OHIO SIZE A CO
27、DE IDENT NO. 14933 DWG NO. 94012 REV H PAGE 6 3.6 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible, provided that the material meets or exceeds the operational and maintenance requ
28、irements, 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. VERIFICATION 4.1 Product assurance program. The product assurance program specified in MIL-PRF-
29、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 this document. 4.3 Conformance inspection. 4.3.1 Inspection of product for delivery
30、 (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 subjected to the power moisture resistance test specified herein with 0 defects allowe
31、d. 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 Inspection of product for delivery (space level code A). Inspection of product for delivery
32、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 specified herein (see 4.4) with 0 defects allowed. The group C life test shall be perfor
33、med 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 moisture resistance test herein shall not be delivered on the contract or order. 4.3.3
34、 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, space level. Resistance to soldering heat and resistance to bonding exposure shall be as
35、 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 C life test shall be performed as specified in MIL-PRF-55342 except the test shall b
36、e 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 temperature exposure shall be as specified in MIL-PRF-55342 except the test shall be for
37、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 reproduction or networking permitted without license from IHS-,-,-DEFENSE ELECTRONIC
38、SUPPLY CENTER DAYTON, OHIO SIZE A CODE IDENT NO. 14933 DWG NO. 94012 REV H PAGE 7 4.4 Power moisture resistance. Power moisture resistance 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 p
39、ercent 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 be as shown in example number 2. EXAMPLE 1 EXAMPLE 2 Characteristic: “K“ Characterist
40、ic: “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 volts 4.5 Visual and mechanical examination. Resistors shall be examined to verify that t
41、he 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 10 ohms to 140 kohms; res. tol. 0.1, 1.0, 2.0, 5.0, term. B, original PIN only (see 1.2). PTN0505 57489 VISHAY
42、 Thin Film 2160 Liberty Drive Niagara Falls, NY 14304-3676 Char. K and M, res. values 1 ohm thru 200 kohm, res. tol. 1 pct., terms. B, G, U, C, and W, all PINs (see 1.2). Char. K and M, res. values 1 ohm thru 180 kohm, res. tol. 2, 5, and 10 pct., terms. B, G, U, C, and W, all PINs (see 1.2). WA82SM
43、-*-NS62C WA82SM-*-NUC WA82PG-*-UC WA82PS-*-UC MSR82G-*-UC 50316 Mini-Systems, Inc. Thick Film Division PO Box 69 20 David Road North Attleboro, MA 02761-0069 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-,-,-
