TYPE
NUMBER
PRODUCT SPECIFICATION
TITLE
PAGE
BUS-12-069
REVISION
TRI-PIN™
1 of 13
AUTHORIZED BY
DATE
D
31-May-06
H. T. Brewbaker
CLASSIFICATION
UNRESTRICTED
1.0
GENERAL
1.1
Scope This specification covers the Tri-Pin™ .025”/0.63mm square pin for use in single or
double-sided printed wiring boards. The specification is composed of the following sections:
Paragraph
1.0
1.1
1.2
1.3
1.4
2.0
3.0
3.1
3.2
3.3
3.4
3.5
3.6
3.7
4.0
4.1
4.2
4.3
4.4
4.5
5.0
6.0
1.2
Title
GENERAL
Scope
Type
Classification
Banned/Restricted Substances
APPLICABLE DOCUMENTS
REQUIREMENTS
Qualifications
Materials
Finish
Design and Construction
Electrical Characteristics
Mechanical Characteristics
Environmental Conditions
QUALITY ASSURANCE PROVISIONS
Responsibility for Inspection
Equipment Calibration
Inspection Conditions
Qualification Inspection
Inspection Lot and Sampling Plan
PACKAGING AND MARKING
NOTES AND DEFINITIONS
Type The Tri-Pin™ shall be available in one of the following types, as limited by the appropriate
product drawing.
Plating
Type
I
II
III
IV
V
VI
VII
30u”/0.76u gold over 50u”/1.27u minimum nickel
50u”/1.27u gold over 50u”/1.27u minimum nickel
15u”/0.38u gold over 50u”/1.27u minimum nickel
120u”/3.05u tin-lead
30u”/0.76u GXT (palladium alloy) over 50u”/1.27u minimum nickel
15u”/0.38u GXT (palladium alloy) over 50u”/1.27u minimum nickel
100u”/2.54u tin
Copyright
Form E-3334
Rev E
FCI
GS-01-001
PDM: Rev:D
STATUS:
Released
Printed: Nov 28, 2010
.
TYPE
NUMBER
PRODUCT SPECIFICATION
TITLE
PAGE
BUS-12-069
REVISION
TRI-PIN™
2 of 13
AUTHORIZED BY
DATE
D
31-May-06
H. T. Brewbaker
CLASSIFICATION
UNRESTRICTED
1.3
Classification
Tri-Pin™ shall be classified as follows:
Class I: Reeled Tri-Pin™ suitable for automatic or semiautomatic application.
Class II: Loose-piece Tri-Pin™ suitable for handtool application.
Unless otherwise specified herein, all requirements are applicable to both classes of Tri-Pin™.
1.4
Banned/Restricted Substances All product where the part number ends in “LF” meet the
European Union directives and other country regulations as described in GS-22-008. The part
numbers that do not end in “LF” meet all regulations except for Pb in SnPb plating, if available. Tin
plated “LF” product has 100% tin plating in the interface and has not been tested for whisker
growth in all interconnect environments.
2.0
APPLICABLE DOCUMENTS
2.1
Issues of Documents The following documents, of the issue in effect on the date of the
latest revision of this specification, shall form a part of this specification to the extent specified
herein.
SPECIFICATIONS
FEDERAL
QQ-N-290
QQ-W-343
QQ-B-613
QQ-B-750
Nickel Plating (Electrodeposited)
Wire Electrical and Nonelectrical, copper, (Uninsulated)
Brass, Leaded and Non-leaded
Bronze, Phosphor: Bar, Plate. Rod, Sheet, Strip, Flat Wire, and Structural and
Special-Shaped Sections.
MILITARY
MIL-F-14256
MIL-P-13949
MIL-G-45204
MIL-P-55110
MIL-P-81728
MIL-P-45209
STANDARDS
MILITARY
MIL-STD-105
MIL-STD-202
MIL-STD-275
MIL-STD-1130
MIL-STD-1344
MIL-STD-45662
Sampling Procedures and Tables for Inspection by Attributes
Test Methods for Electrical and Electronic Parts
Printed Wiring for Electronic Equipment
Connections, Electrical Solderless Wrapped
Test Methods for Electrical Connectors
Calibration Systems Requirements
Flux, Soldering, Liquid (Rosin Base), Activated
Plastic sheet, Laminated, Metal-Clad (for printed wiring) General Specification for
Gold Plating, Electrodeposited
Printed Wiring Boards
Plating, Tin-Lead (Electrodeposited)
Palladium Plating, (Electrodeposited)
Copyright
Form E-3334
Rev E
FCI
GS-01-001
PDM: Rev:D
STATUS:
Released
Printed: Nov 28, 2010
.
TYPE
NUMBER
PRODUCT SPECIFICATION
TITLE
PAGE
BUS-12-069
REVISION
TRI-PIN™
3 of 13
AUTHORIZED BY
DATE
D
31-May-06
H. T. Brewbaker
CLASSIFICATION
UNRESTRICTED
2.2
Other Publications.
specified herein:
The following documents form a part of this specification to the extent
American Society for Testing and Materials (ASTM) ASTM B-159-Phosphor Bronze Wire
3.0
REQUIREMENTS
3.1
3.2
Qualification
Panel assemblies produced using Tri-Pin™ furnished under this specification shall
be capable of meeting the qualification test requirements specified here. (See 4.0)
Material The material for each part shall be as specified herein, or equivalent. Substitute material
shall meet the performance requirements of this specification.
3.2.1
3.2.2
3.3
Finish
3.3.1
Tri-Pin™. The pin shall be drawn wire phosphor bronze alloy UNS C-51000, in
accordance with ASTM B-159.
Carrier
The separable carrier (wire version only) shall be brass alloy UNS C-26000, in
accordance with QQ-B-613.
The finish on the pin shall be as specified herein for the particular (see paragraph 1.2) of
Tri-Pin™ under consideration.
Types I, II and III. The pin shall be gold plated with the specified minimum thickness
(see paragraph 1.2). The plated deposits shall be in accordance with MIL-G-45204,
Type II, Grade Cover 50u”/1.27u minimum of nickel. The plated deposits shall be
in accordance with QQ-N-290, Class I. Noncritical areas such as the sheared tips may
have exposed base metal.
Type IV. The pin shall be plated with 120u”/3.05u minimum of 93/7 tin-lead. The plated
deposits shall be in accordance with MIL-P-81728. Noncritical areas such as the sheared
tips may have exposed base metal.
Types V and VI. The pin shall be plated with 30u”/0.76u or 15u”/0.38u minimum of
palladium alloy and a thin soft gold flash over 50u”/1.27u minimum of nickel. The plated
deposits shall be in accordance with MIL-P-45209. The plated deposits of nickel shall be
in accordance with QQ-N-290, Class I. Noncritical areas such as the sheared tips may
have exposed base metal.
Type VII. The pin shall be plated with 100u”/2.54u tin. The plated deposits shall be in
accordance with GS-46-001 (Confidential). Noncritical areas such as the sheared tips
may have exposed base metal.
3.3.2
3.3.3
3.3.4
3.4
Design and Construction
The Tri-Pin™ shall be available in various above- and below-board
lengths suitable for use as .025”/0.63mm square male disconnects or as similarly configured
wrapposts for solderless wrapped connections, in accordance with MIL-STD-1130. The pin shall
incorporate a formed staking area, known as a tri, providing mechanical stability of the free-standing
pin in a plated-through-hole, until the Pin-Board assembly is soldered. The Tri-Pin™ shall have
.047”±.002”/1.19±.05mm tri diagonal.
Copyright
Form E-3334
Rev E
FCI
GS-01-001
PDM: Rev:D
STATUS:
Released
Printed: Nov 28, 2010
.
TYPE
NUMBER
PRODUCT SPECIFICATION
TITLE
PAGE
BUS-12-069
REVISION
TRI-PIN™
4 of 13
AUTHORIZED BY
DATE
D
31-May-06
H. T. Brewbaker
CLASSIFICATION
UNRESTRICTED
Pin Lengths. The pin is available in a variety of installed lengths as follows:
/1
Length – inches/mm
Pin
Related to Board
Minimum
Maximum
Tri-Pin™
Above
.220/5.59
.745/18.92
Below
.058/1.47
.733/18.62
/1 Based upon .125/3.18mm thick board.
3.4.2
Installation
The Tri-Pin™ shall be installed in a plated-through-hole having a finished
diameter of .039”±.003”/0.99±0.076 for .125”/3.18mm printed wiring board. The pin shall
be capable of installation on minimum centers of .100”/2.54mm on PWB per Paragraph
6.2. The Tri-Pin™ shall be soldered in accordance with good industry techniques that
insure a sound solder bond in order to meet the specifications called herein. The breakout
of termination holes should be no greater than .005”/.127mm x 45° or .005”/.127mm
radius.
Wrappost The wrappost geometry shall be in accordance with paragraph 5.2 of MIL-
STD-1130. The tip of the wrappost shall be beveled to facilitate insertion onto the bit of
the wire wrap tooling.
Workmanship
Pins shall be uniform in quality and shall be free from burrs, scratches,
cracks, voids, chips, sharp edges, and other defects that will adversely affect life or
serviceability.
3.4.1
3.4.3
3.4.4
3.5
Electrical Characteristics
3.5.1
3.5.2
Operating Temperature. Unless otherwise specified, the pins shall have an operating
temperature of +85°C maximum and -40°C minimum.
Low-Level Circuit Resistance The low-level circuit resistance between the pin and the
plated-through-hole after soldering shall not exceed 0.2 milliohms when measured in
accordance with MIL-STD-1344, Method 3002. The following details shall apply:
A. Test Current-100 ma, maximum (short-circuit)
B. Open Circuit voltage- 20 mv D.C., maximum
C. Method of Connection-attach current and voltage leads as shown in Figure 1
3.5.3
Current Rating. The pin provides the electrical resistance equivalent of AWG 29 wire and
In a balanced system would be rated at approximately 3.0 Amperes D.C.
Copyright
Form E-3334
Rev E
FCI
GS-01-001
PDM: Rev:D
STATUS:
Released
Printed: Nov 28, 2010
.
TYPE
NUMBER
PRODUCT SPECIFICATION
TITLE
PAGE
BUS-12-069
REVISION
TRI-PIN™
5 of 13
AUTHORIZED BY
DATE
D
31-May-06
H. T. Brewbaker
CLASSIFICATION
UNRESTRICTED
FIGURE 1-LOW-LEVEL CIRCUIT RESISTANCE
3.6
Mechanical Characteristics
3.6.1
Contact Retention Depending upon pin to plated-through-hole interference, the pin
could have 2 to 10 lbs. (8.9 to 44.5 N) of retention force before the assembled boards
are soldered.
Wrappost Torque
A torque of 2.0 ounce-inches (0.014 N.m) applied to the tip of the
installed soldered wrappost shall not cause yielding of this member, when tested in
accordance with MIL-STD-202, Method 211, Condition E.
Tail Straightening The soldered Tri-Pin™, after tail straightening of either end shall
exhibit no change in position on the opposite end and shall meet all electrical and
mechanical requirements of this specification. The following details shall apply:
a.
b.
c.
d.
Deflection - .035”/0.89mm (in any direction)
Plane of Bending – parallel to sides of wrappost
Pattern – see Figure 2
Tooling Bar Location - .150”/3.81mm from board
3.6.2
3.6.3
Copyright
Form E-3334
Rev E
FCI
GS-01-001
PDM: Rev:D
STATUS:
Released
Printed: Nov 28, 2010
.
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