Product
Specification
Connector, MTA 156, Card Edge
1.
1.1.
SCOPE
Content
108-1058
11Mar11 Rev D
This specification covers the performance requirements for the TE Connectivity (TE) MTA 156 card
edge connector system. This system provides a reliable interconnection between wires and printed
circuit boards.
1.2.
Qualification
When tests are performed on the subject product line, procedures specified in Figure 1 shall be used.
All inspections shall be performed using the applicable inspection plan and product drawing.
2.
APPLICABLE DOCUMENTS
The following TE documents form a part of this specification to the extent specified herein. Unless
otherwise specified, the latest edition of the document applies. In the event of conflict between the
requirements of this specification and the product drawing, the product drawing shall take precedence.
In the event of conflict between the requirements of this specification and the referenced documents,
this specification shall take precedence.
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3.
3.1.
109-1: General Requirements for Test Specifications
109 Series: Test Specifications as indicated in Figure 1
114-1020: Connector MTA 156, Application of
REQUIREMENTS
Design and Construction
Product shall be of the design, construction and physical dimensions specified on the applicable product
drawing.
3.2.
Materials
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Contact: Phosphor bronze, post tin plated
Housing: Thermoplastic polyester 94V-0
3.3.
Ratings
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Current/Voltage: 600 volts AC at 5 amperes maximum
NOTE
The maximum rated current that can be carried by this product is limited by the
maximum operating temperature of the housings (105°C) and the temperature rise of the
contacts (30° Variables which shall be considere d for each application are: wire size,
C).
contact material, ambient temperature, and printed circuit board.
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3.4.
Operating Temperature: -55 to 105°
C
Performance and Test Description
Product shall be designed to meet the electrical, mechanical and environmental performance
requirements specified in Figure 1.
©2011 Tyco Electronics Corporation, | Indicates change
a TE Connectivity Ltd. Company
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All Rights Reserved
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For latest revision, visit our website at www.te.com/documents.
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LOC B
108-1058
3.5.
Test Requirements and Procedures Summary
Test Description
Examination of product.
Requirement
Meets requirements of product
drawing and Application
Specification 114-1020.
ELECTRICAL
Termination resistance, dry circuit.
4.0 milliohms maximum initial.
TE Spec 109-6-1, Condition A.
Subject mated connectors
assembled in housing to 50 mv
open circuit at 100 ma maximum.
See Figure 3.
TE Spec 109-25.
Measure potential drop of mated
contacts assembled in housing.
Calculate resistance.
See Figure 3.
Procedure
Visual, dimensional and functional
per applicable inspection plan.
Termination resistance, specified
current.
Wire Specified Milliohms
Size
Current
Maximum
(AWG) (amperes)
(initial)
26
1.0
5.0
24
1.0
5.0
22
1.5
4.0
20
2.0
4.0
18
3.0
4.0
5000 megohms minimum initial.
1000 megohms minimum final.
Insulation resistance.
TE Spec 109-28-4.
Test between adjacent contacts of
unmated connector assemblies.
Dielectric withstanding voltage.
1.25 kvac at sea level.
TE Spec 109-29-1.
1 minute hold with no breakdown or Test between adjacent contacts of
unmated connector assemblies.
flashover.
See Figure 4.
MECHANICAL
TE Spec 109-45-2.
Temperature rise at rated current.
Temperature rise vs current.
Tensile, straight.
Wire Size
(AWG)
26
24
22
20
18
Wire Size
(AWG)
26
24
22
20
18
See Note.
Slot Tensile
(Lb minimum)
5.0
8.0
12.0
17.0
30.0
Slot Tensile
(Lb minimum)
1.3
1.3
3.4
4.0
4.6
TE Spec 109-16.
Determine slot tensile at a rate of 1
inch per minute. Apply force parallel
to axis of wire.
Tensile, perpendicular.
TE Spec 109-16.
Determine slot tensile at a rate of 1
inch per minute. Apply force
perpendicular to axis of wire on
samples without cover.
Durability.
TE Spec 109-27.
Manually mate and unmate
connector assemblies with printed
circuit board for 25 cycles. Mount
printed circuit board in fixture.
Figure 1 (continued)
Rev D
2 of 7
108-1058
Test Description
Contact retention.
Requirement
10.0 pounds minimum.
Procedure
TE Spec 109-30.
Pull on contact using special cut-
away housing.
TE Spec 109-42.
Measure force necessary to mate
connector assembly with printed
circuit board a distance of .125 inch
from point of initial contact.
Calculate force per contact.
TE Spec 109-42.
Measure force necessary to
unmate connector assembly and
printed circuit board. Calculate
force per contact.
Mating force.
2.3 pounds maximum initial.
Unmating force.
0.2 pound minimum final.
ENVIRONMENTAL
Thermal shock.
See Note.
TE Spec 109-22.
Subject mated connectors to 25
cycles between -55 and 85EC.
NOTE
Shall meet visual requirements, show no physical damage, and shall meet requirements of
additional tests as specified in the Test Sequence in Figure 2.
Figure 1 (end)
3.6.
Product Qualification and Requalification Test Sequence
Test Group (a)
Test or Examination
Examination of product
Termination resistance, dry circuit
Termination resistance, specified current
Insulation resistance
Dielectric withstanding voltage
Temperature rise vs current
Tensile strength, straight and perpendicular (c)
Durability
Contact retention
Mating force
Unmating force
Thermal shock
NOTE
(a)
(b)
(c)
1
5
4
3
1
1
1
2
2,7
1,6
1
1
2,4
3,5
2
3
4
5
6
Test Sequence (b)
See paragraph 4.1.A.
Numbers indicate sequence in which tests are performed.
One half of the samples shall be subjected to the straight tensile test and the remaining
half to the perpendicular tensile test.
Figure 2
Rev D
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108-1058
4.
4.1.
QUALITY ASSURANCE PROVISIONS
Qualification Testing
A.
Sample Selection
Connector housings and contacts shall be prepared in accordance with applicable Instruction
Sheets and shall be selected at random from current production. Test group 1 shall consist of 1
connector of each size, all representative of the entire lot being tested. Test groups 2 through 4
shall consist of 2 connector assemblies per group per wire size. Test group 5 shall consist of 15
contacts chosen randomly from 5 connector assemblies. Test group 6 shall consist of 4 connector
assemblies per wire size. Each wire size shall consist of solid, stranded and prefused or
overcoated wire; UL style 1007 or 1061 tin plated. Stranded wire shall consist of 7 strands. All
wires shall be applied in accordance with AMP Specification 114-1020.
B.
Test Sequence
Qualification inspection shall be verified by testing samples as specified in Figure 2.
4.2.
Acceptance
Acceptance is based on verification that the product meets the requirements of Figure 1. Failures
attributed to equipment, test setup or operator deficiencies shall not disqualify the product. If product
failure occurs, corrective action shall be taken and samples resubmitted for qualification. Testing to
confirm corrective action is required before resubmittal.
4.3.
Quality Conformance Inspection
The applicable quality inspection plan shall specify the sampling acceptable quality level to be used.
Dimensional and functional requirements shall be in accordance with the applicable product drawing
and this specification.
Rev D
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108-1058
NOTE
1.
2.
A 1 foot minimum length of continuous lead for heat dissipation.
Termination resistance equals millivolts divided by test current less resistance of 3 inches of
wire and resistance of .90 inch of printed circuit board pad.
Figure 3
Temperature and Resistance Measurement Points
Rev D
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stm32/stm8
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