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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. 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.
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.
CHARACTERISTIC SPECIFICATION
Working Voltage (sea level) 150 Vrms
Rated Current AWG 24 3.5 A
Rated Current AWG 25 2.5 A
Rated Current AWG 26 2.5 A
Rated Current AWG 28 1.5 A
Contact Resistance 5 mΩ (rated current)
Insulation Resistance 5000 MΩ min
Voltage Proof 600 Vrms /2.0mA (leakage current)
Temperature range -55/+125 °C
Contact Retention Force 22.25 N max
TYPE MATING/UNMATING
FORCE (N MAX)
UNMATING
FORCE (N MIN)
WEIGHT
(G)
Size 9 20 1.3 2.3
Size 15 33 2.0 3.1
Size 21 47 2.9 3.9
Size 25 55 3.5 4.4
Size 31 69 4.3 5.2
Size 37 82 5.1 6.0
Size 51 147 7.1 7.3
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•Removable contacts (Twist Pin contact technology).
•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.
•Distance between 2 adjacent contacts: 1.27mm (.050 inch).
•Distance between 2 contacts rows: 1.09mm (.043 inch).
Electrical & Mechanical Characteristics
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HOW TO ORDER
MATERIALS & FINISHES
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.
CONNECTOR
3401077 01 B MDMA Y 9 P - FO
Shell Finish
01 25.4 µm Ni
02 0.7 µm Au over 25.4 µm Ni Type of Contact
P Pin (Male)
S Socket (Female)
Detail Specification Number Contacts Information
FO Connector without contacts
(Contacts must be ordered separately)
Fixing Option
Nothing: Standard (no hardware)
E Captive nut
Y Float mount
Testing Level
Shell Size
9
15
21
25
31
37
51
MDMA Series
Dimensions shown in: mm
Specifications and dimensions subject to change
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Pin connection with Nickel Plating Pin connection with Gold Plating
ESA/ESCC Specification:
COMPONENT MATERIAL FINISH
Shell Aluminium alloy 01: 25.4 µm electroless Nickel over Copper underlay
02: 0.7 µm Gold over 25.4 µm electroless Nickel
Insulator Liquid Crystal Polymer UL 94-V0, Glass-filled, Black Color
Female Contacts Copper Alloy 1.27 µm Gold over Copper underlay
Male Contacts Copper Alloy 1.27 µm Gold over Copper underlay
Accessories (Y & E) Stainless Steel 303 type, passivated
Interfacial Seals Fluorosilicone elastomer Pink color
Dust Cap Polyethylene Black color, antistatic.
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CONNECTOR DIMENSIONS
ATTACHMENT OPTIONS
Dimensions shown in: mm
Specifications and dimensions subject to change
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SHELL SIZE A ±0.25 B ±0.22 C ±0.14 E ±0.25 F ±0.13 G ±0.13 J ±0.13
9P 19.68 7.60 8.31 9.91 6.63 7.63 14.35
9S 19.68 7.60 9.91 6.63 7.63 14.35
15P 23.50 7.60 12.12 13.72 6.63 11.44 18.16
15S 23.50 7.60 13.72 6.63 11.44 18.16
21P 27.30 7.60 15.93 17.53 6.63 15.25 21.97
21S 27.30 7.60 17.53 6.63 15.25 21.97
25P 29.84 7.60 18.47 20.07 6.63 17.79 24.51
25S 29.84 7.60 20.07 6.63 17.79 24.51
31P 33.65 7.60 22.28 23.88 6.63 21.60 28.32
31S 33.65 7.60 23.88 6.63 21.60 28.32
37P 37.46 7.60 26.09 27.69 6.63 25.41 32.13
37S 37.46 7.60 27.69 6.63 25.41 32.13
51P 36.20 8.70 24.83 26.42 7.65 24.14 30.86
51S 36.20 8.70 26.42 7.65 24.14 30.86
Captive Nut (Option E) Floating Mount (Option Y)
ALLOWABLE FLOAT (MM)
Lateral 0.40
Axial 0.40
9.89
13.70
17.51
20.05
23.86
27.67
26.41
E ±0.25
6.38
4.69
4.69
4.69
4.69
4.69
4.69
6.38
6.38
6.38
6.38
6.38
5.78
7.47
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CONTACT PIN – 340107803B (WIRE SIZE AWG 24, 25, 26, 28 OR 2X28)
CONTACT SOCKET – 340107804B (WIRE SIZE AWG 24, 25, 26, 28 OR 2X28)
Dimensions shown in: mm
Specications and dimensions subject to change
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C&K Part Number: C331-8754-000H ESA/ESCC Description: 340107803B
COMPONENT MATERIAL FINISH
Sleeve Copper alloyed 1.27 µm min. Gold over Copper underlay
Bundle Cupro-Beryllium 1.27 µm min. Gold over Copper underlay
C&K Part Number: C252-8844-000H ESA/ESCC Description: 340107804B
COMPONENT MATERIAL FINISH
Sleeve Copper alloyed 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.
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Dimensions shown in: mm
Specifications and dimensions subject to change
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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)
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
Connector size 9 to 37
Insertion area for Extraction tool
Connector size 51
Locator for Male Contact:
MDMA-Locator-P-01 (P/N: C115373-0001)
Locator for Female Contact:
MDMA-Locator-S-01 (P/N: C115373-0002)
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MALE SCREWLOCK ESA/ESCC DESCRIPTION C&K P/N
340103207B C115366-9218
ACCESSORIES
INTERFACIAL SEAL SIZE ESA/ESCC DESCRIPTION C&K P/N
9S 340103212B C115373-0050C
15S 340103213B C115373-0051C
21S 340103214B C115373-0052C
25S 340103215B C115373-0053C
31S 340103216B C115373-0054C
37S 340103217B C115373-0055C
51S 340103219B C115373-0056C
DUST CAP SIZE DESCRIPTION C&K P/N
9P MDM-DUSTCAP-9P-FR022 C115288-6927
9S MDM-DUSTCAP-9S-FR022 C115288-6928
15P MDM-DUSTCAP-15P-FR022 C115288-6929
15S MDM-DUSTCAP-15S-FR022 C115288-6930
21P MDM-DUSTCAP-21P-FR022 C115288-6931
21S MDM-DUSTCAP-21S-FR022 C115288-6932
25P MDM-DUSTCAP-25P-FR022 C115288-6933
25S MDM-DUSTCAP-25S-FR022 C115288-6934
31P MDM-DUSTCAP-31P-FR022 C115288-6935
31S MDM-DUSTCAP-31S-FR022 C115288-6936
37P MDM-DUSTCAP-37P-FR022 C115288-6937
37S MDM-DUSTCAP-37S-FR022 C115288-6938
51P MDM-DUSTCAP-51P-FR022 C115288-6939
51S MDM-DUSTCAP-51S-FR022 C115288-6940
CRIMPING TOOL DESCRIPTION C&K P/N
M22520/2-01 C995-0001-584
LOCATOR TYPE DESCRIPTION C&K P/N
Male contacts MDMA-Locator-P-01 C115373-0001
Female contacts MDMA-Locator-S-01 C115373-0002
TEST RETENTION TOOL DESCRIPTION C&K P/N
MDMA-Retention tool C115373-0003
Male and
Female
Contacts
Dimensions shown in: mm
Specifications and dimensions subject to change
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For the complete range of accessories and details, consult our MDM accessories datasheet.
EXTRACTION TOOL TYPE DESCRIPTION C&K P/N
9 to 37 MDMA-Extract tool-01 C115373-0006
51 MDMA-Extract tool-02 C115373-0007
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www.ckswitches.com September 2020
ASIA
Tel: +852.3713.5288
EUROPE
Tel: +33.1.60.24.51.51
AMERICAS
Tel: +1.617.969.3700
CONNECTORS DESCRIPTION AND C&K PART NUMBERS
CONTACTS DESCRIPTION AND C&K PART NUMBERS
*To be preferred. Designed for all wires combination.
SHELL
CONTACT TYPE
CONTACT #
ATTACHMENT OPTIONS
STANDARD CONNECTOR CONNECTOR WITH
CAPTIVE NUT (E)
CONNECTOR WITH
FLOATING MOUNT (Y)
ESA/ESCC
DESCRIPTION
C&K P/N ESA/ESCC
DESCRIPTION
C&K P/N ESA/ESCC
DESCRIPTION
C&K P/N
Nickel
Pin
9
340107701B MDMA9P-FO C115373-2100C 340107701B MDMAE9P-FO C115373-2124C 340107701B MDMAY9P-FO C115373-2112C
15
340107701B MDMA15P-FO C115373-2102C 340107701B MDMAE15P-FO C115373-2126C 340107701B MDMAY15P-FO C115373-2114C
21
340107701B MDMA21P-FO C115373-2104C 340107701B MDMAE21P-FO C115373-2128C 340107701B MDMAY21P-FO C115373-2116C
25
340107701B MDMA25P-FO C115373-2106C 340107701B MDMAE25P-FO C115373-2130C 340107701B MDMAY25P-FO C115373-2118C
31
340107701B MDMA31P-FO C115373-2108C 340107701B MDMAE31P-FO C115373-2132C 340107701B MDMAY31P-FO C115373-2120C
37
340107701B MDMA37P-FO C115373-2110C 340107701B MDMAE37P-FO C115373-2134C 340107701B MDMAY37P-FO C115373-2122C
51
340107701B MDMA51P-FO C115373-2142C 340107701B MDMAE51P-FO C115373-2146C 340107701B MDMAY51P-FO C115373-2144C
Socket
9
340107701B MDMA9S-FO C115373-2101C 340107701B MDMAE9S-FO C115373-2125C 340107701B MDMAY9S-FO C115373-2113C
15
340107701B MDMA15S-FO C115373-2103C 340107701B MDMAE15S-FO C115373-2127C 340107701B MDMAY15S-FO C115373-2115C
21
340107701B MDMA21S-FO C115373-2105C 340107701B MDMAE21S-FO C115373-2129C 340107701B MDMAY21S-FO C115373-2117C
25
340107701B MDMA25S-FO C115373-2107C 340107701B MDMAE25S-FO C115373-2131C 340107701B MDMAY25S-FO C115373-2119C
31
340107701B MDMA31S-FO C115373-2109C 340107701B MDMAE31S-FO C115373-2133C 340107701B MDMAY31S-FO C115373-2121C
37
340107701B MDMA37S-FO C115373-2111C 340107701B MDMAE37S-FO C115373-2135C 340107701B MDMAY37S-FO C115373-2123C
51
340107701B MDMA51S-FO C115373-2143C 340107701B MDMAE51S-FO C115373-2147C 340107701B MDMAY51S-FO C115373-2145C
Gold
Pin
9
340107702B MDMA9P-FO C115373-2150C 340107702B MDMAE9P-FO C115373-2174C 340107702B MDMAY9P-FO C115373-2162C
15
340107702B MDMA15P-FO C115373-2152C 340107702B MDMAE15P-FO C115373-2176C 340107702B MDMAY15P-FO C115373-2164C
21
340107702B MDMA21P-FO C115373-2154C 340107702B MDMAE21P-FO C115373-2178C 340107702B MDMAY21P-FO C115373-2166C
25
340107702B MDMA25P-FO C115373-2156C 340107702B MDMAE25P-FO C115373-2180C 340107702B MDMAY25P-FO C115373-2168C
31
340107702B MDMA31P-FO C115373-2158C 340107702B MDMAE31P-FO C115373-2182C 340107702B MDMAY31P-FO C115373-2170C
37
340107702B MDMA37P-FO C115373-2160C 340107702B MDMAE37P-FO C115373-2184C 340107702B MDMAY37P-FO C115373-2172C
51
340107702B MDMA51P-FO
C115373-2192C 340107702B MDMAE51P-FO C115373-2196C 340107702B MDMAY51P-FO C115373-2194C
Socket
9
340107702B MDMA9S-FO C115373-2151C 340107702B MDMAE9S-FO C115373-2175C 340107702B MDMAY9S-FO C115373-2163C
15
340107702B MDMA15S-FO C115373-2153C 340107702B MDMAE15S-FO C115373-2177C 340107702B MDMAY15S-FO C115373-2165C
21
340107702B MDMA21S-FO C115373-2155C 340107702B MDMAE21S-FO C115373-2179C 340107702B MDMAY21S-FO C115373-2167C
25
340107702B MDMA25S-FO C115373-2157C 340107702B MDMAE25S-FO C115373-2181C 340107702B MDMAY25S-FO C115373-2169C
31
340107702B MDMA31S-FO C115373-2159C 340107702B MDMAE31S-FO C115373-2183C 340107702B MDMAY31S-FO C115373-2171C
37
340107702B MDMA37S-FO C115373-2161C 340107702B MDMAE37S-FO C115373-2185C 340107702B MDMAY37S-FO C115373-2173C
51
340107702B MDMA51S-FO C115373-2193C 340107702B MDMAE51S-FO C115373-2197C 340107702B MDMAY51S-FO C115373-2195C
USED FOR WIRE SIZE AWG CONTACT TYPE ESA/ESCC DESCRIPTION C&K PART NUMBER
25 / 26 / 28 Pin 340107801B C331-8752-000H
Socket 340107802B C252-8838-000H
24 / 25 / 26 / 28 / 2x28 Pin* 340107803B C331-8754-000H
Socket* 340107804B C252-8844-000H
