MDMA SERIES
Microminiature connectors
with removable crimp contacts
ESCC 3401/077 - ESCC 3401/078
Features and Benefits
•
Compliant with ESA specifications
•
High performance Micropin™ contact system
(“twist pin” spring male contact and tubular socket contact)
•
Removable crimp type contacts
•
Harnesses length flexibility
•
Non-Outgassing
•
Low Size Connectors
•
Low Weight
Typical Applications
•
Space equipment
•
Satellites harnesses and payloads
•
Avionics / Military
Specification
•
High performance Micro-miniature connectors ESA qualified, for
space applications.
•
Compliant to ESCC specifications 3401/077 Connectors and
3401/078 Removable Crimp Contacts.
•
Compatible with ESCC 3401/029 MDM Connectors, 3401/041
Savers, 3401/032 Accessories and 3401/087 Backshells.
•
Suitable for use in Space, and high performance military/aerospace
applications: Board to Board, Board to Cable or Cable to Cable
applications.
•
Removable contacts.
•
Sizes available: 9, 15, 21, 25, 31, 37 and 51 ways.
•
Connector 9, 15, 21, 25, 31 and 37 ways, accepted wires size:
• 1 wire insulated AWG24, AWG26 and AWG28 (external
diameter at 0.97mm max).
• 1 uninsulated solid wire AWG25.
• 2 wires insulated AWG28 (external diameter at 0.82mm max).
•
Connector 51 ways, accepted wires size:
• 1 wire insulated AWG24, AWG26 and AWG28 (external
diameter at 0.97mm max).
• 1 uninsulated solid wire AWG25.
•
Twist Pin contact technology.
•
Distance between 2 adjacent contacts: 1.27mm (.050 inch).
•
Distance between 2 contacts rows: 1.09mm (.043 inch).
TYPE
Size 9
Size 15
Size 21
Size 25
Size 31
Size 37
Size 51
MATING/UNMATING
FORCE (N
MAX
)
20
33
47
55
69
82
147
UNMATING
FORCE (N
MIN
)
1.3
2.0
2.9
3.5
4.3
5.1
7.1
WEIGHT
(G)
2.3
3.1
3.9
4.4
5.2
6.0
7.3
Quality Level
•
ESA / ESCC: code 3401 (Flying model).
•
Qualification reviewed every 2 years.
Process Contact and Cable Insertion
•
Wire stripping.
•
Cables crimping onto contacts with standard MDMA Crimping tool
M22520/2-01 and dedicated locators (to be ordered separately).
•
Wires cable installed by the end user.
Test Retention
•
A dedicated tool is available to make the retention test of each
contacts in the connectors.
Process Contact and Cable Extraction
•
A dedicated tool is available to remove the contacts from the
connectors.
Electrical & Mechanical Characteristics
CHARACTERISTIC
Working Voltage (sea level)
Rated Current AWG 24
Rated Current AWG 25
Rated Current AWG 26
Rated Current AWG 28
Contact Resistance
Insulation Resistance
Voltage Proof
Temperature range
Contact Retention Force
SPECIFICATION
150 Vrms
3.5 A
2.5 A
2.5 A
1.5 A
5 mΩ (rated current)
5000 MΩ min
600 Vrms /2.0mA (leakage current)
-55/+125 °C
22.25 N max
Options
•
Optional interfacial seal can be applied for female connectors (to be
ordered separately).
•
Optional captive nuts or float mounting.
Packaging
•
•
•
•
Individual packaging.
Traceability associated as per ESA/ESCC specifications.
Each MDMA connector is sold with a dust cap in individual plastic bag.
Contact extraction tool has to be ordered separately.
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1
HOW TO ORDER
CONNECTOR
Our easy build-a-connector concept allows you to mix and match options to create the MDMA you need. To order, select desired
option from each category and place it in the appropriate box.
Pin connection with Nickel Plating
Pin connection with Gold Plating
ESA/ESCC Specification:
3401077
01
B
MDMA
Y
9
P
-
FO
Detail Specification Number
Shell Finish
01
25.4 µm Ni
02
0.7 µm Au over 25.4 µm Ni
Testing Level
MDMA Series
Fixing Option
Nothing: Standard (no hardware)
E
Captive nut
Y
Float mount
Contacts Information
FO
Connector without contacts
(Contacts must be ordered separately)
Type of Contact
P
Pin (Male)
S
Socket (Female)
Shell Size
9
15
21
25
31
37
51
MATERIALS & FINISHES
COMPONENT
Shell
Insulator
Female Contacts
Male Contacts
Accessories (Y & E)
Interfacial Seals
Dust Cap
MATERIAL
Aluminium alloy
Liquid Crystal Polymer
Copper Alloy
Copper Alloy
Stainless Steel
Fluorosilicone elastomer
Polyethylene
FINISH
01:
25.4 µm electroless Nickel over Copper underlay
02:
0.7 µm Gold over 25.4 µm electroless Nickel
UL 94-V0, Glass-filled, Black Color
1.27 µm Gold over Copper underlay
1.27 µm Gold over Copper underlay
303 type, passivated
Pink color
Black color, antistatic.
Dimensions shown in: mm
Specifications and dimensions subject to change
2
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CONNECTOR DIMENSIONS
SHELL SIZE
9P
9S
15P
15S
21P
21S
25P
25S
31P
31S
37P
37S
51P
51S
A
±0.25
19.68
19.68
23.50
23.50
27.30
27.30
29.84
29.84
33.65
33.65
37.46
37.46
36.20
36.20
B
±0.22
7.60
7.60
7.60
7.60
7.60
7.60
7.60
7.60
7.60
7.60
7.60
7.60
8.70
8.70
C
±0.14
8.31
8.64
12.12
12.45
15.93
16.26
18.47
18.80
22.28
22.61
26.09
26.42
24.83
25.15
D
±0.15
4.54
4.87
4.54
4.87
4.54
4.87
4.54
4.87
4.54
4.87
4.54
4.87
5.68
6.01
E
±0.25
9.91
9.91
13.72
13.72
17.53
17.53
20.07
20.07
23.88
23.88
27.69
27.69
26.42
26.42
F
±0.13
6.63
6.63
6.63
6.63
6.63
6.63
6.63
6.63
6.63
6.63
6.63
6.63
7.65
7.65
G
±0.13
7.63
7.63
11.44
11.44
15.25
15.25
17.79
17.79
21.60
21.60
25.41
25.41
24.14
24.14
J
±0.13
14.35
14.35
18.16
18.16
21.97
21.97
24.51
24.51
28.32
28.32
32.13
32.13
30.86
30.86
ATTACHMENT OPTIONS
Captive Nut (Option E)
Floating Mount (Option Y)
ALLOWABLE FLOAT
Lateral
Axial
(MM)
0.40
0.40
Dimensions shown in: mm
Specifications and dimensions subject to change
3
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CONTACT PIN – 340107803B (WIRE SIZE AWG 24, 25, 26, 28 OR 2X28)
C&K Part Number:
C331-8754-000H
ESA/ESCC Description:
340107803B
COMPONENT
Sleeve
Bundle
MATERIAL
Copper alloyed
Cupro-Beryllium
FINISH
1.27 µm min. Gold over Copper underlay
1.27 µm min. Gold over Copper underlay
CONTACT SOCKET – 340107804B (WIRE SIZE AWG 24, 25, 26, 28 OR 2X28)
C&K Part Number:
C252-8844-000H
ESA/ESCC Description:
340107804B
COMPONENT
Sleeve
MATERIAL
Copper alloyed
FINISH
1.27 µm min. Gold over Copper underlay
Nota:
Other products available:
- Male Contact 340107801B, compatible with wire size AWG 25, 26 or 28.
- Female Contact 340107802B, compatible with wire size AWG 25, 26, 28.
Dimensions shown in: mm
Specifications and dimensions subject to change
4
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PROCESS – CONTACT AND CABLE INSERTION
Cable Crimping
1 – Insert wire into contact body.
2 – Insert the unit into the crimping tool (selector position 2) with dedicated locator.
Crimping tool - Position #2:
M22520/2-01 (P/N: C995-0001-584)
Locator for Male Contact:
MDMA-Locator-P-01 (P/N: C115373-0001)
Locator for Female Contact:
MDMA-Locator-P-02 (P/N: C115373-0002)
Contact Insertion
Insert contact with wire into rear insulator cavity until positive stop.
To avoid stress onto retention clip, insert contact in the axis (no
insertion angle).
To be sure contact is locked securely, pull back lightly on wire or use
calibrated test retention tool.
MDMA-Retention tool (P/N: C115373-0003).
PROCESS – CONTACT AND CABLE EXTRACTION
1 – Select contact extraction tool:
- Connector size 9 to 37 ->MDMA-Extract tool-01 (P/N: C115373-0006)
- Connector size 51
->MDMA-Extract tool-02 (P/N: C115373-0007)
2 – Insert tool tip into contact cavity until tip bottoms against contact
shoulder, releasing tine.
Hold wire against tool with finger and remove tool and contact.
Be careful to put extraction tool in the good position!
Each contact cavity has flat area to place tool tip.
Insertion area for Extraction tool
Insertion area for Extraction tool
Connector size 9 to 37
Connector size 51
Dimensions shown in: mm
Specifications and dimensions subject to change
5
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