06011

REVISIONS
LTR
A
B
DESCRIPTION
DATE
APPROVED
Vendor requested changes. Editorial changes
throughout.
Changes to paragraph 3.3.1
9 JUN 09
16 DEC 09
M. Radecki
M. Radecki
Prepared in accordance with ASME Y14.100
REV STATUS
OF PAGES
Source control drawing
REV
B
B
B
B
B
B
B
PAGES
1
2
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PMIC N/A
PREPARED BY
Andrew R. Ernst
DESIGN ACTIVITY:
DEFENSE SUPPLY CENTER, COLUMBUS
COLUMBUS, OHIO
Original date of
drawing
CHECKED BY
Andrew R. Ernst
15 August 2006
APPROVED BY
Michael A. Radecki
TITLE
RESISTOR, CHIP, FIXED, POWER METAL STRIP,
SURFACE MOUNT, LOW VALUE (1.0 WATT),
STYLE 2512
SIZE
A
REV
AMSC N/A
CODE IDENT. NO.
037Z3
DWG NO.
B
PAGE
06011
1
OF
7
5905-E734
1. SCOPE
1.1 Scope. This drawing describes the requirements for a fixed, power metal strip, surface mounted, 1.0 watt, chip resistor, style
2512.
1.2 Part or Identifying Number (PIN). The complete PIN is as follows:
06011
I
I
Drawing
number
-
*****
I
I
Resistance value
(see 3.3.1, 3.3.2)
*
I
I
Tolerance
(see 3.3.3)
2. APPLICABLE DOCUMENTS
2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not
include documents cited in other sections of this specification or recommended for additional information or as examples. While
every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified
requirements of documents in sections 3 and 4 of this specification, whether or not they are listed.
2.2 Government documents.
2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks 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, Chip, Fixed, Film, Nonestablished Reliability, Established Reliability, Space Level, General
Specification for.
DEPARTMENT OF DEFENSE STANDARDS
MIL-STD-690
MIL-STD-790
-
Failure Rate Sampling Plans and Procedures.
Established Reliability and High Reliability Qualified Products List (QPL) Systems for Electrical,
Electronic, and Fiber Optic Parts Specifications.
(Copies of these documents are available online at https://assist.daps.dla.mil/quicksearch/ or from the Standardization Document
Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.)
2.2 Order of precedence. Unless otherwise noted herein or 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 obtained.
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. Resistors shall meet the interface and physical dimensions as specified herein (see
figure 1).
3.3 Electrical characteristics.
3.3.1 Resistance. The nominal resistance is expressed in ohms and is identified by five digits, consisting of four digits and a letter.
The letter is used simultaneously as a decimal point and as a multiplier. For resistance values:
-3
a. Greater than or equal to 0.001 ohm but less than 0.010 ohms, the letter “L” is used to represent a power of 10 .
(i.e.; 1L500 = 0.0015 or 5L000 = 0.005)
b. Greater than or equal to 0.010 ohm but less than or equal to 0.500 ohms, the letter “R” is used to represent a decimal point.
DEFENSE SUPPLY CENTER, COLUMBUS
COLUMBUS, OHIO
SIZE
CODE IDENT NO.
A
037Z3
REV B
DWG NO:
06011
PAGE
2
*
All digits preceding and following the letters “L” and “R” of the group represent significant figures. Minimum and maximum
resistance values shall be as specified herein (see 3.3.2). Standard resistance decade values shall be in accordance with table I. It is
preferred that resistance values be selected as specified in table I. However, if it is necessary to do so, then any values (within
specification limits) may be specified and these values can be considered as conforming to this specification.
Dimensions
L
H
T
W
0.250 ±0.010
(6.35 ±0.254)
0.025 ±0.010
(0.635 ±0.254)
(See note 3)
0.125 ±0.010
(3.18 ±0.254)
NOTES:
1. Dimensions are in inches, millimeters are shown in parentheses.
2. Millimeter equivalents are given for general information only.
3. The “T” dimension varies with the resistance range as follows:
Resistance
range
(ohms)
0.001 to 0.0049
0.005 to 0.0069
0.007 to 0.5
T dimension
(inches)
0.087 ±0.010 (2.21 ±0.254)
0.047 ±0.010 (1.19 ±0.254)
0.030 ±0.010 (0.762 ±0.254)
FIGURE 1. Resistor, fixed, power metal strip, surface mount.
DEFENSE SUPPLY CENTER, COLUMBUS
COLUMBUS, OHIO
SIZE
CODE IDENT NO.
A
037Z3
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DWG NO:
06011
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TABLE I. Standard resistance decade values.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
Standard resistance decade values
30
40
50
60
70
80
31
41
51
61
71
81
32
42
52
62
72
82
33
43
53
63
73
83
34
44
54
64
74
84
35
45
55
65
75
85
36
46
56
66
76
86
37
47
57
67
77
87
38
48
58
68
78
88
39
49
59
69
79
89
90
91
92
93
94
95
96
97
98
99
3.3.2 Resistance range. The resistance range shall be 0.001 ohms to 0.5 ohm (see table II).
3.3.3 Resistance tolerance. Resistance tolerances are available in (D) ±0.5 percent and (F) ±1 percent (see table II).
TABLE II. Resistance range and tolerances.
Resistance
range (ohms)
0.010 to 0.5
0.001 to 0.5
Resistance
tolerance
D
F
3.3.4 Power rating. The power rating shall be 1.0 watt at +70°C. For operation at temperatures greater than +70°C, derate in
accordance with figure 2. For values above 0.1 ohm, derate linearly to 80% rated power at 0.5 ohms.
FIGURE 2. Derating curves for high ambient temperatures.
DEFENSE SUPPLY CENTER, COLUMBUS
COLUMBUS, OHIO
SIZE
CODE IDENT NO.
A
037Z3
REV B
DWG NO:
06011
PAGE
4
3.3.5 Resistance temperature coefficient. The resistance temperature coefficient shall be as specified in table III.
TABLE III. Resistance temperature coefficient.
Resistance temperature
coefficient
(ppm/°C)
±275
±150
±110
±75
Resistance
range
(Ohms)
0.001 to 0.0029
0.003 to 0.0049
0.005 to 0.0069
0.007 to 0.5
3.4 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 minimum of 3 percent lead, by mass (see
6.3).
3.5 Short time overload. When resistors are tested as specified in 4.5, there shall be no evidence of arcing, burning, or charring;
the change in resistance between the initial and final measurements shall not exceed ±(0.5 percent+ 0.0005 ohm).
3.6 Moisture resistance. When resistors are tested as specified in 4.6, there shall be no evidence of mechanical damage; the
change in resistance between the initial and final measurements shall not exceed ±(0.5 percent+ 0.0005 ohm).
3.7 Manufacturers performance data. The manufacturer’s technical specifications and performance data shall be made available
to the customer for a period of two years.
3.8 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.
3.8.1 Individual chip marking. Marking of individual chip resistors is not required but is permitted. Chip resistors may be marked
with a 3 character ohmic value and if space permits a tolerance value in accordance with MIL-PRF-55342. Abbreviated markings are
due to limited space takes precedence over PIN format.
3.9 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
requirements, and promotes economically advantageous life cycle costs.
3.10 Manufacturer eligibility. To be eligible for listing as a approved source of supply, a manufacturer shall be listed on the
MIL-PRF-55342 Qualified Products List for at least one part, or perform the group A and group B inspections specified herein on a
sample agreed upon by the manufacturer and DSCC-VA.
3.10.1 Certificate of compliance. A certificate of compliance shall be required from manufacturers requesting to be an approved
source of supply.
3.11 Workmanship. The resistor shall be uniform in quality and free from any defects that will affect life, serviceability, or
appearance.
4. VERIFICATION
4.1 Qualification inspection. Qualification inspection is not applicable to this document.
4.2 Reliability assurance program. The reliability assurance program specified in MIL-PRF-55342 and maintained in accordance
with MIL-STD-790 is not applicable to this document.
4.3 Failure rate qualification. Failure rate qualification specified in MIL-PRF-55342 and MIL-STD-690 is not applicable to this
document.
DEFENSE SUPPLY CENTER, COLUMBUS
COLUMBUS, OHIO
SIZE
CODE IDENT NO.
A
037Z3
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DWG NO:
06011
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4.4 Conformance inspection.
4.4.1 Inspection of product for delivery. Inspection of product for delivery shall consist of group A inspection (ER level only,
subgroup 2; dc resistance only, subgroup 5; the following exception shall apply: Resistors shall be examined for legibility under
normal production room lighting by an inspector at 10X magnification, and ppm reporting is not applicable) and group B (solder
mounting integrity is not applicable) inspection of MIL-PRF-55342. Additionally; a power moisture resistance test as specified in 4.6
shall be performed.
4.4.2 Group B inspection certification. The acquiring activity may accept a certificate of compliance in lieu of performing the group
B inspection (see 6.2d).
4.5 Short time overload. Resistors shall be tested in accordance with MIL-PRF-55342. The following details and exceptions shall
apply:
a. An overload dc test potential which will result in 5 times the rated wattage.
b. Test board may have copper lamination in excess of the 70 micrometers copper (2 oz.) thickness as described in
MIL-PRF-55342.
c. Separate resistors shall be used for short time overload and resistance temperature characteristic tests.
4.6 Moisture resistance. Resistors shall be tested in accordance with MIL-PRF-55342. The following details and exceptions shall
apply:
a. The test is to be performed on an annual basis.
b. A 30 piece sample shall be used with 0 defects allowed.
c. Step 7a shall not be applicable.
4.6.1 Moisture resistance certification. The acquiring activity may accept a certificate of compliance in lieu of performing the power
moisture resistance test (see 6.2d).
5. PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or order (see 6.2).
When packaging of materiel is to be performed by DoD or in-house contractor personnel, these personnel need to contact the
responsible packaging activity to ascertain packaging requirements. Packaging requirements are maintained by the Inventory Control
Point's packaging activity within the Military Department or Defense Agency, or within the military service’s system commands.
Packaging data retrieval is available from the managing Military Department's or Defense Agency's automated packaging files, CDROM products, or by contacting the responsible packaging activity.
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.)
6.1 Intended use. Surface mount resistors are used in electronic circuits where space is a major concern.
6.2 Ordering data. The contract or purchase order should specify the following:
a.
Complete PIN (see 1.2).
b.
Requirements for delivery: One copy of the conformance inspection data or certification of compliance that parts have
passed conformance inspection with each shipment of parts by the manufacturer.
c.
Requirements for packaging and packing.
d.
Whether the manufacturer performs the group B inspection and the moisture resistance test or provides a certificate of
compliance (see 4.4.2 and 4.6.1).
e.
If marking is required (see 3.8.1).
DEFENSE SUPPLY CENTER, COLUMBUS
COLUMBUS, OHIO
SIZE
CODE IDENT NO.
A
037Z3
REV B
DWG NO:
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6.3 Tin whisker growth. The use of alloys with tin content greater than 97 percent, by mass, may exhibit tin whisker growth
problems after manufacture. Tin whiskers may occur anytime from a day to years after manufacture and can develop under typical
operating conditions, on products that use such materials. Conformal coatings applied over top of a whisker-prone surface will not
prevent the formation of tin whiskers. Alloys of 3 percent lead, by mass, have shown to inhibit the growth of tin whiskers. For
additional information on this matter, refer to ASTM-B545 (Standard Specification for Electrodeposited Coatings of Tin).
6.4 User of record. Coordination of this document for future revisions is coordinated only with the approved source of supply and
the users of record of this document. Requests to be added as a recorded user of this drawing may be achieved online at
[email protected] or in writing to: DSCC-VAT, Post Office Box 3990, Columbus, OH 43218-3990 or by telephone (614) 692-0552 or
DSN 850-0552.
6.5 Approved source of supply. Approved source of supply is listed herein. Additional sources will be added as they become
available. Assistance in the use of this drawing may be obtained online at [email protected] or contact
DSCC-VAT, Post Office Box 3990, Columbus, OH 43218-3990 or by telephone (614) 692-0552 or DSN 850-0552.
DSCC drawing
PIN
Vendors similar
designation or type
number 1/
Vendor
CAGE
06011
WSL-2512-37
91637
Vendor's name
and address
Vishay Dale Electronics
PO Box 609
Columbus, NE 68602-0609
1/ Parts must be purchased to the DSCC PIN to assure that all performance requirements and tests are met.
DEFENSE SUPPLY CENTER, COLUMBUS
COLUMBUS, OHIO
SIZE
CODE IDENT NO.
A
037Z3
REV B
DWG NO:
06011
PAGE
7
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