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1.0 GENERAL
Scope – This specification covers the insulation piercing Quickie Backplane Connector
System designed for Backplane-to-flat cable (round conductor) interconnection in low
power applications. This specification is composed of the following sections.
Paragraph Title Page
1.0 GENERAL 1
2.0 APPLICABLE DOCUMENTS 1
3.0 REQUIREMENTS 2
3.1 Qualifications 2
3.2 Material 2
3.3 Finish 3
3.4 Design & Construction 3
3.5 Electrical Characteristics 4
3.6 Mechanical Characteristics 6
3.7 Environmental Conditions 11
4.0 QUALITY ASSURANCE PROVISIONS 14
4.1 Equipment Calibration 14
4.2 Inspection Conditions 14
4.3 Qualification Inspection 15
4.4 Quality Conformance Inspection 19
4.5 Acceptance Inspection 21
5.0 NOTES AND DEFINITIONS 22
2.0 APPLICABLE 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.
Military Specifications
MIL-M-24519 Molding Plastic, Polyester thermoplastic
MIL-G-45204 Gold Plating, Electrodeposited
MIL-C-45662 Calibration System Requirements
MIL-P-55110 Printed Wiring Boards
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Military Standards
MIL-STD-105 Sampling Procedures and Tables for Inspection By
Attributes.
MIL-STD-202 Test Methods for Electronic and Electrical Component
Parts.
MIL-STD-275 Printed Wiring Board For Electrical Equipment.
MIL-STD-1344 Test Methods For Electrical Connectors.
Federal Specifications
QQ-N-290 Nickel Plating ( Electrodeposited )
QQ-B-750 Bronze, Phosphor; Bar, Plate, Rod, Sheet, Strip, Flat, Wire,
and Structural and Special Shaped Sections.
Industry Specifications / Standards
UL-94 Tests for Flammability of Plastic Materials.
Company Product Specification
BUS-12-01 Round Conductor Flat Flexible Cable.
3.0 REQUIREMENTS
3.1 Qualification – Connectors furnished under this specification shall be
products capable of meeting the qualification test requirements specified
herein.
3.2 Material – The material for each part shall be as specified herein, or
equivalent. Substitute material shall meet the performance required of this
specification.
3.2.1 Contact – The female contact shall be full – hard phosphor bronze in
accordance with QQ-B-750, Composition A.
3.2.2 Plastic – Also molded plastic parts of the female connector and shroud shall be
filled polyester in accordance with MIL-M-24519. All plastic material shall be rated
flame retardant 94 V-0 in accordance with UL-94.
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3.3 Finish – The female contact shall be plated in the contact area with 30 micro-inches
(minimum) gold per MIL-G-45204, Type II, Grade C over 50 micro-inches (minimum)
nickel per QQ-N-290, Class 2.
3.4 Design and Construction – The female connector shall be of multi-piece design,
consisting of: contacts having self stripping terminations and two single ended cantilever
spring members for interfacing with 0.025 inch square backplane contacts; a housing to
maintain the contacts in position to interface with the backplane contacts on a 0.100
inch square grid and with the terminating cable, having conductors on 0.050 inch
centers; and a pre-loaded cover providing an integral slot for alignment of cable during
termination. The shroud shall be of one-piece construction and, when installed over the
backplane contacts, shall simulate a composite two-row male header for mating with the
female connector.
3.4.1 Installation
3.4.1.1 Female Connector – The female connector shall simultaneously terminate up
to 60 wires size AWG 28 (stranded) or AWG 30 (solid) on 0.050 inch centers
without pre-stripping the PVC (polyvinylchloride) cable insulation. The cable
shall conform to the requirements of Company Specification BUS-12-001.
3.4.1.2 Shroud – The shroud shall be capable of being assembled within an 0.100 by
0.100 field of .025 inch square backplane contacts. The shroud will utilize four
rows of contacts and a number of contacts per row two greater than that of
the female connector with which it will be mated; the two outside rows and
eight end contacts shall not be functional as disconnects. Iterative use of the
shroud in end-to-end or side-to-side locations shall be possible on a
continuous basis, without the elimination of an intervening row of contacts in
the former and with the elimination of one intervening row in the latter.
3.4.2 Polarization – An optional, molded-in polarizing feature shall be available to insure
correct orientation of the female connector and shrouded backpanel contacts.
3.4.3 Mating – The connector system shall be capable of mating and un-mating by hand
without the use of special tools within the specified temperature range.
3.4.4 Workmanship – Connectors and shrouds shall be uniform in quality and shall be
free from burrs, scratches, cracks, voids, chips, blisters, pin holes, sharp edges,
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and other defects that will adversely affect life or serviceability.
3.4.5 Interchangeability – Any female connector shall be capable of mating with any
properly constituted shrouded backpanel assembly without degradation in
performance.
3.5 Electrical Characteristics
3.5.1 Current Rating ( see 5.1) – The maximum continuous current rating of the connector
system shall be 1.0 Ampere DC.
3.5.2 Contact Resistance – The contact resistance shall not exceed 15 milliohms (20
milliohms after exposure to the environments described in paragraph 3.6.5 and
3.7.1 to 3.7.7) when measured in accordance with MIL-STD-1344, Method 3004.
The following details shall apply:
(a) Method of Connection – Attach current and voltage leeds as shown in
Figure 1.
(b) Test Current – 1.0 Ampere DC
3.5.3 Low Level Circuit Resistance – The low level circuit resistance shall not exceed 15
milliohms (20 milliohms after exposure to the environments described in paragraph
3.6.5 and 3.7.1 to 3.7.7 ) when measured in accordance with MIL-STD-1344,
Method 3002. The following details shall apply:
(a) Method of connection – See Figure 1
(b) Test Current – 1 milliampere DC
(c) Maximum Open – Current Voltage – 20 millivolts DC
3.5.4 Insulation Resistance ( See 5.2 ) – The insulation resistance of mated connectors
shall be not less than 5000 megohms ( 1000) megohms after after exposure to the
humidity environment described in paragraph 3.7.2 ) when measured in
accordance with MIL-STD-1344, Method 3003. The following details shall apply:
(a) Test Potential – 500 volts DC
(b) Points of Measurement – Between adjacent contact positions
(c) Special Preparation – The female connector shall not be terminated.
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3.5.5 Dielectric Withstanding Voltage (see 5.2) – There shall be no evidence of arc-over,
insulation breakdown, or excessive leakage current (>1milliampere ) when the
mated connectors are tested in accordance with MIL-STD-1344, Method 3001. The
following details shall apply:
(a) Test Potential – 1000 volts RMS, 60Hz at sea-level pressure; 450 volts RMS,
60 Hz at 50,000 feet simulated altitude .
(b) Test Duration – 60 seconds
(c) Points of Measurements – Between adjacent contact positions
(d) Special Preparation – The female connector shall not be terminated.
3.6 Mechanical Characteristics
3.6.1 Cable Retention – The cable to female connector interface shall withstand the
stresses imposed by twenty (20) unmatings of the female connector from the
shrouded pin field when the disconnecting force is applied to the cable. The
following details shall apply:
(a) Force Distribution – Evenly distributed across width of cable.
(b) Direction of Force – See Figure 2.
(c) Rate of Un-mating – 1 inch per minute.
3.6.2 Cable Flex Resistance – The cable-to-female connector interface shall withstand
the stresses imposed by 100 cycles of cable flexing. The following details shall
apply:
(a) Tension on Cable – 2 pounds per inch of cable width.
(b) Flex Angle - 140º as shown in Figure 3.
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3.6.3 Total Mating Force – The total force to mate the female connector and the
shrouded pin field shall not exceed the values shown in Table I. The force shall be
applied at a rate not to exceed one (1) inch per minute.
TABLE I – TOTAL MATING FORCE
No. of Contacts Force ( pounds )
10 5
14 7
16 8
20 10
26 14
34 19
40 23
50 30
60 38
3.6.4 Individual Contact Separation Force – The force to withdraw the gage shown in
Figure 4 from individual contact positions in the female connector shall be not less
than 25 grams. The force shall be applied at a rate not to exceed one (1) inch per
minute.
3.6.5 Durability – After 100 mating cycles of the female connector and the shrouded pin
field, the individual contact separation force shall be not less than 25 grams (see
paragraph 3.6.4) and the contact resistance shall not exceed 20 milliohms (see
paragraph 3.5.2). The mating and unmating shall be performed in a manner
reasonably simulating actual use.
3.6.6 Shroud Retention – After a force of ten (10) pounds is applied to either end of the
installed shroud as shown in Figure 5, the shroud shall exhibit no damage or
loosening with respect to the pin field in which it is installed.
3.6.7 Shroud Replacement – After the third installation of the same shroud over the same
group of backpanel pins, the shroud shall exhibit no loosening with respect to the
pin field.
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3.7 Environmental Conditions
3.7.1 Thermal Shock – After exposure of the mated connector system to alternate
periods of extreme high and low temperature, there shall be no evidence of
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cracking or crazing of any plastic component or other physical damage to the
connector. The dielectric withstanding voltage shall be not less than 1000 volts
RMS (see paragraph 3.5.5). The test shall be in accordance with MIL-STD-1344,
Method 1003. The following details and exceptions shall apply:
(a) Test Condition – A
(b) Temperature Range - + 105º C to - 65º C
(c) Number of Cycles – 5 (1 cycle consisting of 30 minutes at each temperature).
(d) Transfer Time – 30 seconds, maximum
3.7.2 Humidity – Within one (1) hour after exposure of the mated connector system to a
high humidity environment, the insulation resistance shall be no less than 1000
megohms (see paragraph 3.5.4) and the low level circuit resistance shall not
exceed 20 milliohms (see paragraph 3.5.3). The test shall be in accordance with
MIL-STD-1344, Method 1002. The following details shall apply:
(a) Test Condition – B (96 hours)
(b) Relative Humidity - 90% minimum (Type I – Steady State).
(c) Temperature - + 40º C
3.7.3 High Temperature Life – After exposure of the mated connector system to a high
temperature operating environment, the insulation resistance shall be no less
than 5000 megohms (see paragraph 3.5.4) and the contact resistance shall not
exceed 20 milliohms (see paragraph 3.5.2). The test shall be in accordance with
MIL-STD-1344, Method 1005. The following details shall apply:
(a) Test Chamber Temperature – Adjusted to provide connector system
temperature of 105º C during operating period.
(b) Test Duration – B (250 hours)
(c) Operating Conditions – 1.0 ampere DC current through all contacts of
connector system; duty cycle: 45 minutes ON and 15 minutes OFF.
3.7.4 Shock – There shall be no evidence of physical or mechanical damage when the
mated connector system is subjected to transient accelerations. During and after
each shock, the contacts shall evidence no discontinuity greater than ONE (1)
microsecond. The shroud shall not move more than 0.005 inch from its original
assembled position as a result of this test. The test shall be in accordance with
MIL_STD-1344, Method 2004. The following details shall apply:
(a) Test Conditions – G (100G, 6 ms Sawtooth)
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(b) Number of Shocks – 3 shocks in each direction along three orthogonal axes
(18 total)
(c) Mounting – See Figure 6
3.7.5 Vibrations – There shall be no evidence of physical or mechanical damage when
the mated connector system is subjected to prolonged mechanical vibration.
During vibration along each axis, the contacts shall evidence no discontinuity
greater than one (1) microsecond. The shroud shall not move more than 0.005
inch from its original assembled position as a result of this test. At the completion
of the test, the individual contact separation force shall be not less than 25 grams
(see paragraph 3.6.4) and the contact resistance shall not exceed 15 milliohms
(see paragraph 3.5.2). The test shall be in accordance with MIL-STD-1344,
Method 2005. The following details shall apply:
(a) Test Condition – III (+15G, 10 to 2000 Hz)
(b) Duration – 4 hours along each of three orthogonal axes (12 hour total)
(c) Mounting – See Figure 6
3.7.6 Hydrogen Sulfide (H2S) Exposure – After exposure of the mated connector
system to an H2S atmosphere, the low level circuit resistance shall not exceed 20
milliohms (see paragraph 3.5.3). The following details shall apply:
(a) Atmosphere – 3ppm H2S in moist air.
(b) Temperature - + 40º C
(c) Duration – 96 hours
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3.7.7 Salt Spray – After exposure of the mated connector system to a salt fog
atmosphere, the low level circuit resistance shall not exceed 20 milliohms (see
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paragraph 3.5.3). The test shall be in accordance with MIL-STD-1344, Method
1001. The following details shall apply:
(a) Salt Solution - 5%
(b) Duration – B (48 hours)
3.7.8 Solvent Resistance – After immersion in solvents commonly encountered in
soldered connector applications, the shroud shall exhibit no evidence of swelling,
softening, cracking, crazing, dimensional change, or other defect that would
affect the service life of the connector system. The test shall be in accordance
with MIL-STD-202, Method 215.
4.0 Quality Assurance Provisions
4.1 Equipment Calibration – All test equipment and inspection facilities used in the
performance of any test shall be maintained in a calibration system in accordance with
MIL-C-45662.
4.2 Inspection Conditions – Unless otherwise specified herein, all inspections shall be
performed under the following ambient conditions:
(a) Temperature - 25º C + 5º C
(b) Relative Humidity – 30% to 80%
(c) Barometric Pressure – Local Ambient
4.3 Qualification Inspection – Qualification inspection shall be performed on sample units
produced with equipment and procedures normally used in production.
4.3.1 Sample – Components for six (6) of the largest and three (3) of the smallest
population backplane connector systems and three (3) of the largest shrouds shall
be subjected to the qualification inspection.
4.3.2 Preparation of Samples
4.3.2.1 Female Connector – The female connectors shall be configured and
terminated as shown in Table II.
TABLE II - FEMALE CONNECTOR DESCRIPTION
Connector No. of Wire Wire
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Number Contacts Size Type Length
1-2 Largest AWG 28 Stranded 10 inches
3 Largest ---------- Not Terminated ------------
4-5 Largest AWG 28 Stranded 10 inches
6 Largest AWG 30 Solid 10 inches
7-8 Smallest AWG 28 Stranded 10 inches
9 Smallest AWG 30 Solid 10 inches
4.3.2.2 Printed Wiring Test Boards – Eight (8) test boards conforming to the
applicable requirements of MIL-P-55110 and MIL-STD-275 shall be prepared
as shown in Figure 7.
4.3.2.3 Backplane Assembly – Pin contacts shall be staked and soldered into the
printed wiring test boards to form simulated back-plane assemblies. The pin
tip configuration and true position tolerance shall be as shown in Figure 8.
Shrouds shall be installed to complete the backplane assembly.
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TABLE III - CONNECTOR SYATEM QUALIFICATION INSPECTION
Sample No.
Examination Paragraph 1 2 3 4 5 6 7 8 9 10
Total Mating Force 3.6.2 - - - X X X X X X -
Individual Contact Separation Force 3.6.4 - - - X X X - - - -
Cable Retention 3.6.1 - - - X - - X - - -
Cable Flex Resistance 3.6.2 X - - X - - X - - -
Shroud Retention 3.6.6 X - - X - - - - - -
Contact Resistance 3.5.2 X X - X X X X X X -
Insulation Resistance 3.5.4 - - X - - - - - - -
Dielectric Withstanding Voltage 3.5.5 - - X - - - - - - -
Thermal Shock 3.7.1 X X X - - - - - - -
Humidity 3.7.2 X X X - - - - - - -
High Temperature Life 3.7.3 X X X - - - - - - -
Shock 3.7.4 - - - X X - - - - -
Vibration 3.7.5 - - - X X - - - - -
Durability 3.6.5 - - - X - X X X X -
Hydrogen Sulfide Exposure 3.7.6 - - - X X X X X X -
Salt Spray 3.7.7 - - - X X X X X X -
Solvent Resistance 3.7.8 - - - - - - - - - X
4.3.3. Test Sequence – The sample connector systems and individual shrouds shall be
subjected to the inspections specified in Table III, in the order shown.
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4.4 Quality Conformance Inspection – Quality conformance inspection shall be
performed on sample units produced with equipment and procedures normally used in
production.
4.4.1 Sample – Components for six (6) of the largest population backplane connector
system shall be selected at random from items produced every 6 to 12 months and
subjected to quality conformance inspection.
4.4.2 Preparation of Samples
4.4.2.1 Female Connector – The female connectors shall be configured and
terminated as shown in Table IV.
TABLE IV – FEMALE CONNECTOR DESCRIPTION
Connector Wire Wire
No. Size Type Length
1-2 AWG 28 Stranded 10 inch
3 -------- Not Terminated ---------
4-5 AWG 28 Stranded 10 inch
6 AWG 30 Solid 10 inch
4.4.2.2 Printed Wiring Test Boards – Five (5) test boards conforming to the applicable
requirements of MIL-P-55110 and MIL-STD-275 shall be prepared as shown
in Figure 7.
4.4.2.3 Backplane Assembly – Pin contacts shall be staked and soldered into the
printed wiring test boards to form simulated backplane assemblies. The pin tip
configuration and true position tolerance shall be as shown in Figure 8.
Shrouds shall be installed to complete the backplane assembly.
4.4.3 Test Sequence – The sample connector system shall be subjected to the
inspections specified in Table V, in the order shown.
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TABLE V – CONNECTOR SYSTEM QUALITY CONFORMANCE INSPECTION
Sample No.
Examination Paragraph 1 2 3 4 5 6
Total Mating Force 3.6.3 - - - X X X
Individual Contact Separation Force 3.6.4 - - - X X X
Cable Retention 3.6.1 - - - - X -
Cable Flex Resistance 3.6.2 X - - X - -
Shroud Retention 3.6.6 X - - X - -
Shroud Replacement 3.6.7 - X - - X -
Contact Resistance 3.5.2 X X - X X X
Insulation Resistance 3.5.4 - - X - - -
Dielectric Withstanding Voltage 3.5.5 - - X - - -
Thermal Shock 3.7.1 X X X - - -
Humidity 3.7.2 X X X - - -
Durability 3.6.5 - - - X - X
Hydrogen Sulfide Exposure 3.7.6 - - - X X X
Salt Spray 3.7.7 - - - X X X
4.4.4 Failures – If a connector system or component fails to pass the quality conformance
inspection, appropriate corrective action shall be taken on the materials or
processes and additional sample units shall be subjected to the quality conformance
inspection to verify the effectiveness of the action.
4.4.5 Disposition of Sample Units – Sample units that have been subjected to the quality
conformance inspection shall not be considered deliverable on the contract or
purchase order.
4.5 Acceptance Inspection – Acceptance inspection shall consist of the examination and
inspections specified in Table VI.
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TABLE VI – ACCEPTANCE INSPECTION
AQL
Examination Major Minor
Visual and Mechanical 1.0% 4.0%
4.5.1 Inspection Lot – An inspection lot shall consist of all components produced under
essentially the same conditions and offered for inspection at one time.
4.5.2 Sampling Plan – Statistical sampling and inspection shall be in accordance with
MIL-STD-105 for general inspection, Level II. The acceptable quality level (AQL)
shall be as specified in Table VI. Major and minor defects shall be as defined in
MIL-STD-105.
4.5.3 Rejected Lots – Rejected lots shall be reworked to correct the defects or screened
to remove defective units and re-submitted for inspection.
4.5.4 Disposition of Sample Units – Sample units that have been subjected to the
acceptance inspection shall be considered deliverable on the contract or purchase
order.
5.0 Notes and Definitions
5.1 Current Rating – The current rating of the backplane connector system is dependent on
the cross-sectional area of the printed wiring board traces to which it is connected and
upon the size of the flat cable conductor. The maximum continuous rating assumes the
use of AWG 28 wire and a printed wiring board trace of comparable cross-section.
5.2 Insulation Resistance / Dielectric Withstanding Voltage – The specified values for these
parameters assume no (or very limited) effect of the printed wiring board. If these
assumptions are not met, the limits can be expected to be exceeded. The test omits the
flat cable from the specification for insulation resistance due to its relatively low value
and its variability with length.
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TYPE PRODUCT SPECIFICATION NUMBER BUS-12-019
TITLE PAGE REVISION
23 of 23 B
AUTHORIZED BY DATE
QUICKIE BACKPLANE CONNECTOR SYSTEM H. SUNDY 15 MAR 06
CLASSIFICATION
UNRESTRICTED
Copyright FCI
Form E-3334
Rev E
GS-01-001
Rev Page Revision ECR # Date
A 10 Section 3.6.6 changed “the middle” to 7413 7/28/81
“either end”.
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B ALL Re-typed on New Format V06-0263 3-15-06
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PDM: Rev:B Released .STATUS: Printed: Nov 28, 2010
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
FCI / Amphenol:
66245-020 66245-210 66245-114LF 66245-020LF 66245-110LF 66245-210LF 66245-250LF 66245-316LF
66245-320LF 66245-326LF 66245-330LF 66245-344LF 66245-350LF 66245-360LF 66245-016LF 66245-024LF
66245-044LF 66245-050LF 66245-060LF 66245-124LF 66245-224LF 66245-226LF 66245-240LF 66245-244LF
66245-260 66245-324LF
