TYPE
NUMBER
PRODUCT SPECIFICATION
TITLE
PAGE
BUS-12-099
REVISION
“Spot-of-Gold” Mini PV Crimp-to-Wire Contact
1 of 9
AUTHORIZED BY
DATE
D
2-Jun-06
H.T. Brewbaker
CLASSIFICATION
UNRESTRICTED
1.0
SCOPE
1.1
This specification sets forth the electrical and mechanical parameters for the "Spot-of-Gold" Mini PV,
Crimp-to-Wire type disconnect when mated with a .025+ .001 square pin.
2.0
APPLICABLE DOCUMENTS
2.1
The following documents and specifications form a part of this specification to the extent specified
herein.
UNS-C17200
ASTM B-194
MIL-G-45204
MIL-STD-202
CDA-725
UNS-C72500
- Beryllium Copper
- Beryllium Copper
- Gold Plating: Electro Deposited
- Test Methods for Electronic Parts
- Copper Nickel
- Copper Nickel
3.0
ELECTRICAL AND MECHANICAL PARAMETERS
3.1
Qualifications
3.1.1
The contacts furnished under this specification shall be a product which has been tested
and passed the tests specified herein.
3.2
Definitions
3.2.1
Mini PV Contact: A Mini PV contact is a metallic assembly consisting of a contact body
and a pin retention spring normally crimped to wire and intended to mate with a .025" +
.001" square pin.
Contact Body: A contact body is the electrical contact member of the assembly used to
form a housing for the retention spring and incorporating wire and insulation barrels used
for crimping to 18 to 32 AWG wire.
Retention Spring: A retention spring is the mechanical component of the assembly used
to force the male pin in contact with the contact area of the body.
3.2.2
3.2.3
3.3
Materials
3.3.1
3.3.2
Contact Body: The copper body shall be fabricated from 1/4 hard copper nickel (CDA-
725). UNS-C72500
Retention Spring: The retention spring shall be fabricated from beryllium copper UNS-
C17200 (ASTM B-194), 1/2 hard, heat treated to 175,000 PSI minimum tensile strength.
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-12-099
REVISION
“Spot-of-Gold” Mini PV Crimp-to-Wire Contact
2 of 9
AUTHORIZED BY
DATE
D
2-Jun-06
H.T. Brewbaker
CLASSIFICATION
UNRESTRICTED
3.4
Finish
3.4.1
Contact Body: The contact body shall be supplied mill finish with a "Spot-of-Gold" .025"
in diameter and .001" minimum in height located in the contact area of the body.
Retention Spring: The contact spring plating shall be .000005" minimum gold over
.000050 nickel underplating.
3.4.2
3.5
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.
3.6
Manufacturing Processability
This product is not designed to be exposed to manufacturing solder processes.
4.0
PERFORMANCE PARAMETERS
The Mini PV contact shall meet the mechanical, electrical and environmental parameters specified herein.
Tests shall be performed in accordance with MIL-STD-202, where applicable.
4.1
Mechanical
4.1.1
Initial Insertion Force: The initial insertion force is measured using a push-pull type gage,
calibrated in grams, using an insertion speed of one inch per minute and a steel gage pin
(.0260 _ .0001 - .0002 square, V4 finish). See Table 1.
Withdrawal Force: Is measured using a push-pull type gage calibrated in grams using a
withdrawal speed of one inch per minute, and a steel gage pin (.0240 + .0002 - .0000
square, V4 finish). Measurements are taken after five insertion cycles with a .026 +
.0000 - .0002 square steel pin. See Table 1.
Normal Force: Normal force is the force the retention spring applies to the mating pin
and is perpendicular to the pin. At a normal deflection of .012 inch in the assembled part,
the spring shall meet the normal force requirements as shown in Table II and Figure 1.
After five (5) deflection cycles, the chord height of the spring shall not change more than
.0015". See Figure II.
Crimp Tensile Strength: Contacts crimped to wires shall be placed in a standard tensile
testing machine, and an axial load applied. The wire shall not pull out of the wire barrel,
nor break, nor become distorted to such an extent that it is unusable before the minimum
strength is reached. Minimum tensile strength shall be 75% of wire tensile strength.
4.1.2
4.1.3
4.1.4
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-12-099
REVISION
“Spot-of-Gold” Mini PV Crimp-to-Wire Contact
3 of 9
AUTHORIZED BY
DATE
D
2-Jun-06
H.T. Brewbaker
CLASSIFICATION
UNRESTRICTED
4.1
Electrical
4.2.1
Initial Contact Resistance: D.C. resistance shall be measured using the four point
voltage current method. The Ohmmeter used must have an accuracy of at least + 0.5
milliohms. The digital read-out shall be capable of 3 digit display with accuracy of + 1 in
the last digit. The probe shall provide suitable metal-to-metal contact. The contact
resistance, when measured as described above, shall be 3.0 milliohms maximum initial
and 5.0 milliohms maximum after aging. See Figure III.
Current Carrying Capacity: A contact mated with an 0.25" + .001" square production pin
and subjected to 3 Ampere continuous load shall show no more than 30o C temperature
rise above ambient.
4.2.3
Wear Test: All contacts cycled 500 times on a standard production pin of .025" + .001"
square, shall be tested and shall meet the contact resistance as described in 4.2.1.
Temperature Cycling: All contacts submitted to temperature cycling test MIL-STD-202C,
Method 102A, shall be tested and shall meet contact resistance as described in 4.2.1.
Flowers of Sulphur Aging Test: Unmated contacts shall be placed in an enclosure
Flowers of Sulphur and water for 10 days. Temperature within the enclosure shall be
150oF + 10oF and 80% relative humidity. After aging, terminals shall be stabilized at
room temperature and subjected to 5 cycles of mating. Contacts shall then be tested for
and meet contact resistance as described in 4.2.1.
4.2.5.1
Set up for Flowers of Sulphur Test using an enclosure with a volume of
approximately 32000 cubic centimeters, 100 grams of sulphur and 500
milliliters of distilled water. A quantity of 345 grams of anhydrous sodium
carbonate shall be added to the distilled water. Arrangement of materials
during test shall be as follows:
1. Water on the bottom in a 150 millimeter
diameter by 75 millimeter high beaker.
2. Sulphur in a 150 milliliter beaker placed
inside 150 millimeter x 75 millimeter beaker.
3. Test samples placed on a rack suspended over the
sulphur and facing the water.
4.2.2
4.2.4
4.2.5
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-12-099
REVISION
“Spot-of-Gold” Mini PV Crimp-to-Wire Contact
4 of 9
AUTHORIZED BY
DATE
D
2-Jun-06
H.T. Brewbaker
CLASSIFICATION
UNRESTRICTED
4.2.6
4-4-16 Aging Test: After the initial contact resistance test, contaminate each contact with
one of the following contaminants:
a) Synthetic Dust - Formulation II
b) Artificial Perspiration
Contacts contaminated with a and b must be tested in the unmated condition and
subjected to 50 cycles in the following environment:
1. 50o + 10oF, 50% maximum R.H. 4 hours
2. 170o + 10oF. 92% + 3% R.H. 4 hours
3. 170o + 10oF. 50% R.H. 16 hours
After the 50 cycles have been completed, the contacts shall be stabilized to room
temperature (70o + .10oF). Contacts shall then be subjected to 15 cycles (one cycle
equals one insertion and one withdrawal) over a .025" + .001" square steel pin, with V4
finish.
Contacts shall then be mated with a gold plated .025 + .001" pin and the contact
resistance tested. Resistance must not exceed 5.0 milliohms when measured as
described in 4.2.1.
4.2.6.1
Test method for 4-4-16 Aging Test:
a) Synthetic dust II is applied to contacts with a 1/2" (maximum) wide
brush.
After application, samples shall be tapped with fingers to remove
excess
dust.
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-12-099
REVISION
“Spot-of-Gold” Mini PV Crimp-to-Wire Contact
5 of 9
AUTHORIZED BY
DATE
D
2-Jun-06
H.T. Brewbaker
CLASSIFICATION
UNRESTRICTED
1.
Synthetic Dust II Formulation:
Parts
1.81
2.48
1.48
4.46
6.67
KNO
KCI3
KF
NH4C1
NH4NO3
Mg4(NO3) .2.6H20 2.64
MgSO4.7H20
CaSO4
CaO.A1203.S10
T102
V2 O5
MNO2
Fe2O3
CU2SO4.5H2O
ZNO
HgC12
PbC12
PbSO4
Card Dust *
NOTE:
38.1
3.39
20.7
0.33
0.089
0.10
9.42
1.57
1.25
0.136
2.69
1.47
17.2
Paper fiber 100% pass 80 mesh screen. Estimated 50% by volume consisting of fibers
larger and 50% smaller than 75 + 25 microns, measured on long dimension.
75 micron fiber having average width of 15 microns.
Copyright
Form E-3334
Rev E
FCI
GS-01-001
PDM: Rev:D
STATUS:
Released
Printed: Nov 28, 2010
.
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