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
TYPE MATING/UNMATING UNMATING WEIGHT
FORCE (N MAX) FORCE (N MIN) (G)
High performance Micro-miniature connectors ESA qualified, for
Size 9 20 1.3 2.3
space applications.
Size 15 33 2.0 3.1
Compliant to ESCC specifications 3401/077 Connectors and
Size 21 47 2.9 3.9
3401/078 Removable Crimp Contacts.
Size 25 55 3.5 4.4
Compatible with ESCC 3401/029 MDM Connectors, 3401/041
Size 31 69 4.3 5.2
Savers, 3401/032 Accessories and 3401/087 Backshells.
Size 37 82 5.1 6.0
Suitable for use in Space, and high performance military/aerospace
Size 51 147 7.1 7.3
applications: Board to Board, Board to Cable or Cable to Cable
applications. Quality Level
Removable contacts.
ESA / ESCC: code 3401 (Flying model).
Sizes available: 9, 15, 21, 25, 31, 37 and 51 ways.
Qualification reviewed every 2 years.
Connector 9, 15, 21, 25, 31 and 37 ways, accepted wires size:
Process Contact and Cable Insertion
1 wire insulated AWG24, AWG26 and AWG28 (external
Wire stripping.
diameter at 0.97mm max).
1 uninsulated solid wire AWG25. Cables crimping onto contacts with standard MDMA Crimping tool
2 wires insulated AWG28 (external diameter at 0.82mm max). M22520/2-01 and dedicated locators (to be ordered separately).
Connector 51 ways, accepted wires size:
Wires cable installed by the end user.
1 wire insulated AWG24, AWG26 and AWG28 (external
Test Retention
diameter at 0.97mm max).
A dedicated tool is available to make the retention test of each
1 uninsulated solid wire AWG25.
contacts in the connectors.
Twist Pin contact technology.
Distance between 2 adjacent contacts: 1.27mm (.050 inch).
Process Contact and Cable Extraction
Distance between 2 contacts rows: 1.09mm (.043 inch).
A dedicated tool is available to remove the contacts from the
connectors.
Electrical & Mechanical Characteristics
CHARACTERISTIC SPECIFICATION
Options
Working Voltage (sea level) 150 Vrms
Optional interfacial seal can be applied for female connectors (to be
Rated Current AWG 24 3.5 A
ordered separately).
Rated Current AWG 25 2.5 A
Optional captive nuts or float mounting.
Rated Current AWG 26 2.5 A
Rated Current AWG 28 1.5 A Packaging
Contact Resistance 5 m (rated current)
Individual packaging.
Insulation Resistance 5000 M min
Traceability associated as per ESA/ESCC specifications.
Voltage Proof 600 Vrms /2.0mA (leakage current)
Each MDMA connector is sold with a dust cap in individual plastic bag.
Temperature range -55/+125 C
Contact extraction tool has to be ordered separately.
Contact Retention Force 22.25 N max
www.ckswitches.com
1HOW 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 Contacts Information
FO Connector without contacts
(Contacts must be ordered separately)
Shell Finish
01 25.4 m Ni
02 0.7 m Au over 25.4 m Ni Type of Contact
P Pin (Male)
S Socket (Female)
Testing Level
Shell Size
MDMA Series
9
15
21
Fixing Option
25
Nothing: Standard (no hardware)
31
E Captive nut
37
Y Float mount
51
MATERIALS & FINISHES
COMPONENT MATERIAL FINISH
01: 25.4 m electroless Nickel over Copper underlay
Shell Aluminium alloy
02: 0.7 m Gold over 25.4 m electroless Nickel
Insulator Liquid Crystal Polymer UL 94-V0, Glass-filled, Black Color
Female Contacts Copper Alloy 1.27 m Gold over Copper underlay
Male Contacts Copper Alloy 1.27 m Gold over Copper underlay
Accessories (Y & E) Stainless Steel 303 type, passivated
Interfacial Seals Fluorosilicone elastomer Pink color
Dust Cap Polyethylene Black color, antistatic.
Dimensions shown in: mm
Specifications and dimensions subject to change
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