87018

REVISIONS
LTR
A
B
DESCRIPTION
Add new B tolerance. Change resistance
o
temperature characteristics to ±25 ppm/ C.
Dimensional changes. Change resistance range
to 100 ohms to 100 kilohms. Add new suppliers.
Add new requirements for resistance
characteristic, power ratings, solderability, and
dimensions.
DATE
APPROVED
23 MAY 88
D. MOORE
26 MAY 89
D. MOORE
1 OCT 93
D. MOORE
C
Deleted ozone depleting substance. Editorial
changes throughout.
D
Changes in accordance with NOR 5905-R007-94.
23 AUG 94
D. MOORE
E
Update and validation of drawing. Change
reference specification to MIL-PRF-914. Editorial
changes throughout.
24 AUG 00
K. COTTONGIM
F
Add characteristic “R” to existing source of
supply.
18 OCT 01
K. COTTONGIM
G
Changes in accordance with NOR 5905-R006-03.
17 DEC 02
K. COTTONGIM
H
Add pure tin, manufacturer’s eligibility, and pulse
application paragraphs. Editorial changes
throughout.
3 JUL 12
M. 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
REV STATUS
REV
H
H
OF PAGES
PAGES
1
2
Source control drawing
H
H
H
H
H
H
3
4
5
6
7
8
PMIC N/A
PREPARED BY
Allen R. Knox
DEFENSE SUPPLY CENTER, COLUMBUS
COLUMBUS, OH
Original date of drawing:
CHECKED BY
David W. Withrow
TITLE
RESISTOR NETWORK, 16 PIN, LEADLESS
CHIP CARRIER
20 AUGUST 1987
APPROVED BY
David E. Moore
SIZE
A
REV
AMSC N/A
CODE IDENT. NO.
14933
DWG NO.
H
PAGE
87018
1
OF
8
5905-2012-E18
1. SCOPE
1.1 Scope. This drawing describes the requirements for a resistor network, fixed, film, leadless chip carrier, 16 pin,
supplied to the requirements of MIL-PRF-914/3 except as noted herein. These networks are available in hermetically
sealed and nonhermetically sealed packages.
1.2 Part or Identifying Number (PIN). The complete PIN is as follows:
87018
|
|
Drawing number
-
*
|
|
Schematic
(1.2.1)
****
|
|
Resistance
(1.2.1.1)
*
|
|
Tolerance
(1.2.1.2)
*
|
|
Characteristic
(1.2.1.3)
1.2.1 Schematic. The schematic of the resistor network is identified by a single letter in accordance with figure 1.
FIGURE 1. Schematics.
1.2.1.1 Resistance. The resistance is in accordance with MIL-PRF-914.
1.2.1.2 Resistance tolerance. The resistance tolerance is identified as a single letter in accordance with table I.
TABLE I. Resistance tolerance.
Symbol
B
D
F
G
J
Resistance tolerance
(in percent) ±
0.1
0.5
1.0
2.0
5.0
DEFENSE SUPPLY CENTER, COLUMBUS
SIZE
CODE IDENT NO.
DWG NO.
COLUMBUS, OHIO
A
14933
87018
REV H
PAGE
2
1.2.1.3 Characteristic. Resistor networks are available in characteristics R, V, H, or C, in accordance with
MIL-PRF-914 (see 3.2).
2. APPLICABLE DOCUMENTS
2.1 Government documents.
*
2.1.1 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 SPECIFICATION
MIL-PRF-914
-
Resistor Networks, Fixed, Film, Surface Mount, Nonestablished Reliability, and Established
Reliability, General Specification For.
DEPARTMENT OF DEFENSE STANDARD
MIL-STD-202
MIL-STD-790
-
MIL-STD-1285 *
*
Test Methods for Electronic and Electrical Component Parts.
Established Reliability and High Reliability Qualified Products List (QPL) Systems for Electrical,
Electronic, and Fiber Optic Parts Specifications.
Marking of Electrical and Electronic Parts.
(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, Philadelphia, PA 19111-5094.)
2.2 Order of precedence. Unless otherwise noted herein or in the contract, 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-914 and as specified
herein.
3.2 Interface and physical dimensions. The resistor shall meet the interface and physical dimensions as specified in
MIL-PRF-914 and herein (see figure 2). Cavity construction using wire bonding techniques shall be supplied only as a
characteristic C (hermetically sealed) network
3.2.1 Termination. Termination finish shall be tin-lead or hot solder dip as specified in MIL-PRF-914.
*
3.2.2 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 6.5).
3.3 Electrical characteristics.
3.3.1 Resistance range. The resistance range shall be 100 ohms to 100 kilohms.
DEFENSE SUPPLY CENTER, COLUMBUS
SIZE
CODE IDENT NO.
DWG NO.
COLUMBUS, OHIO
A
14933
87018
REV H
PAGE
3
Inches
.003
.005
.010
mm
0.08
0.13
0.25
Inches
.015
.016
.020
mm
0.38
0.41
0.51
Inches
.025
.040
.050
mm
0.64
1.02
1.27
Inches
.085
.250
.300
mm
2.16
6.35
7.62
NOTES:
1. Dimensions are in inches.
2. Metric equivalents are given for general information only.
3. Unless otherwise specified, tolerances are ±.008 (0.20 mm).
4. Adjacent corner pads may be rounded or diagonally cut to meet the .015 (0.38 mm) minimum requirement.
FIGURE 2. Leadless chip carrier.
DEFENSE SUPPLY CENTER, COLUMBUS
SIZE
CODE IDENT NO.
DWG NO.
COLUMBUS, OHIO
A
14933
87018
REV H
PAGE
4
3.3.2 Resistor power rating. The resistor power rating for individual resistors shall be in accordance with table II.
TABLE II. Power ratings.
Schematic
A
B
Characteristics
C, H, R, and V
Element
Network
(watts)
(watts)
0.050
0.40
0.025
0.375
3.3.3 Package power rating. The package power rating shall be in accordance with table II. For temperatures in
o
excess of 70 C, power rating shall be derated in accordance with MIL-PRF-914.
3.3.4 Power conditioning. Power conditioning shall be in accordance with MIL-PRF-914 at 1.5 times the rated power
specified for individual resistors (see 3.3.2).
3.3.5 Operating voltage. The maximum operating voltage shall be 50 Vdc.
o
o
3.3.6 Operating temperature. The operating temperature shall be -55 C to +125 C.
3.3.7 Resistance temperature characteristic. The resistance temperature characteristic shall be in accordance with
MIL-PRF-914.
o
3.3.8 TC tracking. The TC tracking shall be ±10 ppm/ C.
3.3.9 Solderability. When resistors are tested as specified in 4.5, there shall be no evidence of electrical or mechanical
damage.
3.3.9.1 Failure criteria for leadless packages. The criteria for acceptable solderability during evaluation of the
terminations are:
a. The total surface area of the dipped part of the termination is at least 95 percent covered by a continuous new
solder coating.
b. That pinholes, voids, porosity, nonwetting, or dewetting are not concentrated in one area and do not exceed 5
percent of the total metallized termination area.
c.
That there shall be no solder bridging between any termination area and any other termination area not
connected to it by design. In the event that the solder dipping causes bridging, the test shall not be considered a
failure provided that a local application of heat (i.e., gas, soldering iron, or redipping) results in solder pullback and
no wetting of the dielectric area is indicated by microscope examination at a magnification of between 10x and
20x.
That area of the surface to be tested as specified in 4.5c shall include the total metallized area of both the castellations
and the terminal pads. In case of a dispute, the percentage of coverage with pinholes or voids shall be determined by
actual measurement of these areas, as compared to the total area.
3.4 Environmental characteristic. The environmental characteristics shall be in accordance with MIL-PRF-914
characteristic R, V, H, or C.
3.5 Marking. Marking shall be in accordance with MIL-STD-1285, except the PIN shall be as specified in 1.2, with the
manufacturer's CAGE number or trade mark and date code.
DEFENSE SUPPLY CENTER, COLUMBUS
SIZE
CODE IDENT NO.
DWG NO.
COLUMBUS, OHIO
A
14933
87018
REV H
PAGE
5
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 requirements, and promotes economically advantageous life cycle costs.
*
3.7 Manufacturer eligibility. To be eligible for listing as a approved source of supply, a manufacturer shall be listed on
the MIL-PRF-914 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 DLA Land and Maritime-VAT.
*
3.7.1 Certificate of compliance. A certificate of compliance shall be required from manufacturers requesting to be listed
as an approved source of supply.
3.8 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-914 and maintained in
accordance with MIL-STD-790 is not applicable to this document.
4.2 Qualification inspection. Qualification inspection is not applicable to this document.
4.2.1 Failure rate qualification. The failure rate qualification specified in MIL-PRF-914 is not applicable to this
document.
4.3 Conformance inspections.
4.3.1 Inspection of product for delivery. Inspection of product for delivery shall consist of group A and group B
inspections of MIL-PRF-914.
4.3.2 Certification. The acquiring activity, at its discretion, may accept a certificate of compliance with group B
requirements in lieu of performing group B tests (see 6.2d).
4.4 Inspection of packaging. Inspection of packaging shall be in accordance with MIL-PRF-914.
4.5 Solderability. Solderability shall be in accordance with method 208 of MIL-STD-202. The following details shall
apply:
a. Application of flux. Flux type shall be in accordance with MIL-PRF-914. Terminations shall be immersed in the
flux, which is at room ambient temperature, to the minimum depth necessary to cover the surface to be tested.
The terminations shall be completely immersed by individually dipping each edge with the Y1 axis 30 degrees to
45 degrees from vertical. The terminations to be tested shall be immersed in the flux for a period of 5 seconds to
10 seconds.
b. Solder dip. The dross and burned flux shall be skimmed from the surface of the molten solder. (NOTE: May not
require separate operation in wave or flow pot). The molten solder shall be maintained at a uniform temperature
of 245°C ±5°C. The surface of the molten solder shall be skimmed again prior to immersing the terminations in
the solder. The part shall be attached to a dipping device and the flux covered terminations immersed one side at
a time, in molten solder to the depth, and in the same manner specified in 4.5a. The immersed and emersion
rates shall be 1.000 ±0.250 inch per second and dwell time in the solder bath shall be 5.0 seconds ±0.5 second.
After the dipping process, the part shall be allowed to cool in air. Residue flux shall be removed from the
terminations by rinsing in a suitable solvent. If necessary, a soft cloth or cotton swab moistened with clean 91
percent isopropyl alcohol shall be used to remove all remaining flux.
DEFENSE SUPPLY CENTER, COLUMBUS
SIZE
CODE IDENT NO.
DWG NO.
COLUMBUS, OHIO
A
14933
87018
REV H
PAGE
6
c.
Examinations of terminations. After each dip coated termination has been thoroughly cleaned of flux, the
castellation and pad shall be examined using a magnification between 10x and 20x.
4.6 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-914.
5. PACKAGING
*
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or order (see
6.2). When actual packaging of materiel is to be performed by DoD personnel 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, CD-ROM 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. Resistor networks are used in surface mounting applications 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. (i.e. ESD sensitive packaging).
d. Whether the manufacturer performs the group B tests or provides certification of compliance with group B
requirements (see 4.3.2).
6.3 Electrostatic charge. Under several combinations of conditions, these resistors can be electrically damaged, by
electrostatic charges, and drift from specified value. Users should consider this phenomena when ordering or shipping
resistors. Direct shipment to the Government is controlled by MIL-DTL-39032 which specifies a preventive packaging
procedure.
6.4 PIN supersession. PIN's in the original 87018 and revision A have been superseded by a new PIN in revision B
that includes a characteristic code to differentiate between hermetically and nonhermetically sealed resistor networks.
The following table illustrates a generic PIN substitution:
TABLE III. PIN supersession.
87018
and 87018A
87018B
Nonhermetic
87018B
Hermetic
87018-******
87018-******V
87018-******H
87018-******C
DEFENSE SUPPLY CENTER, COLUMBUS
SIZE
CODE IDENT NO.
DWG NO.
COLUMBUS, OHIO
A
14933
87018
REV H
PAGE
7
*
6.5 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).
*
6.6 Pulse applications. Designers are CAUTIONED on using the above resistors in high power pulse applications.
Since they have not been qualified nor tested for such applications, damage and premature failure are possible.
*
6.7 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 resistor@dla.mil or in writing to: DLA Land and Maritime-VAT, Post Office Box 3990, Columbus, OH
43218-3990 or by telephone (614) 692-0552 or DSN 850-0552.
*
6.8 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 resistor@dla.mil or contact DLA Land
and Maritime-VAT, Post Office Box 3990, Columbus, OH 43218-3990 or by telephone (614) 692-0552 or DSN 850-0552.
DLA Land and Maritime
drawing PIN
87018-******* 1/
Characteristics C; resistance values 100
ohms through 100 kilohms; resistance
tolerances B, D, F, G, and J. Schematic A
and B.
Characteristics R, V, and H; resistance
values 100 ohms through 100 kilohms;
resistance tolerances B, D, F, G, and J.
Schematics A and B.
Characteristics C; resistance values 50
ohms through 100 kilohms; resistance
tolerances B, D, F, G, and J. Schematics A
and B.
Vendor similar
designation or
type number
Vendor
CAGE
HC-158
HC-159
27851
7***
57027
104-120
57489
Vendor’s name and address
Spectrum Microwave
400 Nickerson Road
Marlborough, MA 01752
IRC, Inc.
4222 S. Staples Street
Corpus Christi, TX 78411-2702
Vishay Thin Film
2160 Liberty Drive
Niagara Falls, NY 14304-3798
1/ Parts must be purchased to this DLA Land and Maritime PIN to assure that all performance requirements and tests
are met.
DEFENSE SUPPLY CENTER, COLUMBUS
SIZE
CODE IDENT NO.
DWG NO.
COLUMBUS, OHIO
A
14933
87018
REV H
PAGE
8