TYPE
NUMBER
PRODUCT SPECIFICATION
TITLE
PAGE
BUS-12-033
REVISION
Compliant Press-Fit Pin
1 of 15
AUTHORIZED BY
DATE
CLASSIFICATION
G
H. T. Brewbaker 31-May-06
UNRESTRICTED
1.0
GENERAL
1.1
Scope This specification covers the Compliant Press-Fit Pin for use in plated through holes in
double-sided or multi-layer printed wiring boards. The specification is composed of the following
sections:
Paragraph
1.0
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
1.2
Title
General
Applicable Documents
Requirements
Qualifications
Materials
Finish
Design and Construction
Electrical Characteristics
Mechanical Characteristics
Environmental Conditions
Quality Assurance Provision
Equipment Calibration
Inspection Conditions
Qualification Inspection
Quality conformance Inspection
Acceptance Inspection
Notes and Definitions
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.
Copyright
Form E-3334
Rev E
FCI
GS-01-001
PDM: Rev:G
STATUS:
Released
Printed: Nov 28, 2010
.
TYPE
NUMBER
PRODUCT SPECIFICATION
TITLE
PAGE
BUS-12-033
REVISION
Compliant Press-Fit Pin
2 of 15
AUTHORIZED BY
DATE
CLASSIFICATION
G
H. T. Brewbaker 31-May-06
UNRESTRICTED
MILITARY
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
2.2
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
The following documents form a part of this specification to the extent
Plastic sheet, Laminated, Metal-Clad (for printed wiring) General Specification for
Gold Plating, Electrodeposited
Printed Wiring Boards
Plating, Tin-Lead (Electrodeposited)
PALLADIUM Plating, (Electrodeposited)
Other Publications.
specified herein:
American Society for Testing and Materials (ASTM) ASTM B-159-Phosphor Bronze Wire
3.0
REQUIREMENTS
3.1
Panel assemblies produced using Compliant Press-Fit Pins furnished under this
Qualification
specification shall be capable of meeting the qualification test requirements specified here. (See
5.1)
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
Compliant Press-Fit Pins
The pin shall be drawn wire phosphor bronze alloy UNS C-
51000, in accordance with QQ-B-750 for the stamped version and in accordance with
ASTM B-159, for the wire version.
Carrier
The separable carrier (wire version only) shall be brass alloy UNS C-26000, in
accordance with QQ-B-613.
3.2
3.2.2
3.3
Finish
The Compliant Pin shall be plated with the specified thickness (see 5.2) of gold in
accordance with MIL-G-45204, Type II, Grade C, over 1,27mm (50microinches) (minimum) nickel in
accordance with QQ-N-290, Class 2, or with 3,81mm (120 microinches) (minimum) 93/7 tin-lead in
accordance with MIL-P-81728, over 1,27mm (50 microinches) (minimum) nickel in accordance with
QQ-N-290, Class 2. Lead free plating is also available with 2,54mm (100 microinches) tin in
accordance with GS-46-001 (Confidential) over 1,27mm (50 microinches) (minimum) nickel in
accordance with QQ-N-290, Class 2.
Copyright
Form E-3334
Rev E
FCI
GS-01-001
PDM: Rev:G
STATUS:
Released
Printed: Nov 28, 2010
.
TYPE
NUMBER
PRODUCT SPECIFICATION
TITLE
PAGE
BUS-12-033
REVISION
Compliant Press-Fit Pin
3 of 15
AUTHORIZED BY
DATE
CLASSIFICATION
G
H. T. Brewbaker 31-May-06
UNRESTRICTED
3.4
Design and Construction
The compliant Pin shall be available in various above- and below-
board lengths suitable for use as 2,64mm (0.025 inch) square male disconnects or as similarly
configured wrappost for solderless wrapped connections, in accordance with MIL-STD-1130. The
pin shall incorporate a compliant staking area providing mechanical stability of the free-standing pin
in a plated-through-hole.
3.4.1
The pin shall perform within the requirements of this specification when
Installation
installed in a plated-through-hole having a finished diameter of 1,02mm ± , 08 ( 0.040 ±
0.003 inches).The pin shall accommodate any printed wiring board thickness from
(0.093. (3/32) to 3,18mm (0.125 (1/8) ) inches (nominal) and be capable of installation on
minimum centers of 2.54mm (0.100 inch) (see Paragraph 5.4 ).
3.4.2
3.4.3
Wrappost The wrappost geometry shall be in accordance with 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.
2,36mm
3.5
Electrical Characteristics
3.5.1
Low-Level Circuit Resistance The low-level circuit resistance between
the pin
and the plated-through-hole shall not exceed 0.2 milliohms when (0.5 milliohms after
environmental conditioning) 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
FIGURE 1-LOW-LEVEL CIRCUIT RESISTANCE
Copyright
Form E-3334
Rev E
FCI
GS-01-001
PDM: Rev:G
STATUS:
Released
Printed: Nov 28, 2010
.
TYPE
NUMBER
PRODUCT SPECIFICATION
TITLE
PAGE
BUS-12-033
REVISION
Compliant Press-Fit Pin
4 of 15
AUTHORIZED BY
DATE
CLASSIFICATION
G
H. T. Brewbaker 31-May-06
UNRESTRICTED
3.5.2
Wrapper Resistance
The resistance between the wrappost and its terminating
wire shall not exceed 2 milliohms when measured in accordance with MIL-STD1240; the
following details shall apply:
A. Test Current-2.0 amperes D.C.
B. Method of Connection- attach current and voltage leads as shown in Figure 2
FIGURE 2- WRAPPER RESISTANCE
3.6
Mechanical Characteristics
3.6.1
Contact Retention A force of 44,40N (10 pounds) applied in either direction along the
axis of the pin shall not displace the pin from its applied position in the printed wiring
board. The force shall be applied at a crosshead speed of 2,54mm (1 inch) per minute
with the peak load maintained for 5 to 10 seconds.
A torque of 0.021 Nm (3.0 ounce-inches) applied to the tip of the
Wrappost Torque
installed wrappost shall not cause yielding of this member, when tested in accordance
with MIL-STD-202, Method 211, Condition E.
3.6.2
Copyright
Form E-3334
Rev E
FCI
GS-01-001
PDM: Rev:G
STATUS:
Released
Printed: Nov 28, 2010
.
TYPE
NUMBER
PRODUCT SPECIFICATION
TITLE
PAGE
BUS-12-033
REVISION
Compliant Press-Fit Pin
5 of 15
AUTHORIZED BY
DATE
CLASSIFICATION
G
H. T. Brewbaker 31-May-06
UNRESTRICTED
3.6.3
Stripping Force
The force to strip a wrapped connection conforming to MIL-STD-
1130 from the wrappost shall be not less than 8.88 N (2.0 lbs.) when measured in
accordance with that specification and Figure 3.
FIGURE 3- STRIPPING FORCE
3.6.4
Tail Straightening
After tail straightening of either end, the pin shall exhibit no change in
position of the opposite end and shall meet all electrical and mechanical requirements of
this specification. The following details shall apply:
A.
B.
C.
D.
Deflection- ,89mm ( 0.035 inch ) ( in any direction)
Plane of Bending- parallel to sides of wrappost
Pattern - see Figure 4
Tooling Bar Location - 3,81mm ( 0.150 inch ) from board
Copyright
Form E-3334
Rev E
FCI
GS-01-001
PDM: Rev:G
STATUS:
Released
Printed: Nov 28, 2010
.
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