MDMA SERIES
Microminiature connectors
with removable crimp contacts
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.
• Sizesavailable:9,15,21,25,31and37ways
• Removablecontacts
• Acceptedwiressize:
•1wireinsulatedAWG24,AWG26andAWG28
•1uninsulatedsolidwireAWG25
•2wiresinsulatedAWG28
• TwistPincontacttechnology
• Distancebetween2adjacentcontacts:1.27mm(.050inch)
• Distancebetween2contactsrows:1.09mm(.043inch)
Quality Level
• 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
Size15 33 2.0 2.6
Size21 47 2.9 3.2
Size25 55 3.5 3.6
Size31 69 4.3 4.2
Size37 82 5.1 4.8 www.ck-components.com
Electrical & Mechanical Characteristics
HOW TO ORDER
HOW TO ORDER
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
CONTACTS
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
MDMA Series
3401078 01B
Detail Specification Number Contact and Wire Type:
01BPin 1*AWG25,26or28
02BSocket 1*AWG25,26or28
03BPin* 1*AWG24,25,26,28or2*AWG28
04BSocket* 1*AWG24,25,26,28or2*AWG28
*To be preferred. Designed for all wires combination.
Dimensions shown in: mm
Specications and dimensions subject to change
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CONNECTORS DESCRIPTION AND C&K PART NUMBERS
CONTACTS DESCRIPTION AND C&K PART NUMBERS
*To be preferred. Designed for all wires combination.
Dimensions shown in: mm
Specications and dimensions subject to change
www.ck-components.com
FIXING OPTION
STANDARD CAPTIVE NUT (E) FLOAT MOUNT (Y)
DESCRIPTION P/N DESCRIPTION P/N DESCRIPTION P/N
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
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
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
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
Gold Nickel
PinPin SocketSocket
SHELL
CONTACT TYPE
CONTACT #
USED FOR WIRE SIZE AWG CONTACT TYPE DESCRIPTION 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
MATERIALS & FINISHES
CONNECTOR DIMENSIONS
Dimensions shown in: mm
Specications and dimensions subject to change
www.ck-components.com
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.
SHELL SIZE A MAX B MAX C MAX F ±0.13 Q MAX
919.94 8.46 10.16 14.35 7.8
15 23.75 12.27 13.97 18.16 11.6
21 27.56 16.08 17.78 21.97 15.4
25 30.10 18.62 20.32 24.51 17.95
31 33.91 22.43 24.13 28.32 21.75
37 37.72 26.24 27.94 32.13 25.6
Connectors MDMA Plug (Male contacts)
SHELL SIZE A MAX B MAX C MAX F ±0.13 Q MAX
919.94 10.16 10.16 14.35 7.8
15 23.75 13.97 13.97 18.16 11.6
21 27.56 17.78 17.78 21.97 15.4
25 30.10 20.32 20.32 24.51 17.95
31 33.91 24.13 24.13 28.32 21.75
37 37.72 27.94 27.94 32.13 25.6
Connectors MDMA Receptacle (Female contacts)
CONNECTOR DIMENSIONS
CONTACTS DIMENSIONS
Dimensions shown in: mm
Specications and dimensions subject to change
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ALLOWABLE FLOAT (mm)
Diameter 0.36±0.10
Axial 0.51max
Contact Pin (Male contacts)
Contact Socket (Female contacts)
Float Mount (Option Y) Captive Nut (Option E)
WIRE CONTACT TYPE ØE (mm) ØF (mm)
1xAWG25,26,28 340107801B 0.58±0.02 0.94±0.02
1xAWG24,25,26,28
or2xAWG28 340107803B 0.70±0.01 0.96±0.01
WIRE CONTACT TYPE ØE (mm) ØF (mm)
1xAWG25,26,28 340107802B 0.58±0.02 0.94±0.02
1xAWG24,25,26,28
or2xAWG28 340107804B 0.70±0.01 0.96±0.01
ØF
ØE
ØE
ØF
ØF
ØE
ØE
ØF
Dimensions shown in: mm
Specications and dimensions subject to change
www.ck-components.com
PROCESS – CONTACT AND CABLE INSERTION
Cable Crimping
Contact Insertion
1–Insertwireintocontactbody.
1–Insertcontactwithwireintorearinsulatorcavityuntilpositivestop.
Tobesurecontactislockedsecurely,pullbacklightlyonwireorusecalibratedtestretentiontool–P/N:C115373-0003.
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–P/N:C115373-0001
ForFemaleContact–P/N:C115373-0002
ØF
ØE
ØE
ØF
ØF
ØE
ØE
ØF
ØF
ØE
ØE
ØF
ØF
ØE
ØE
ØF
2–Repeatforbalanceofcontactsworkingrowbyrowacrosstheinsulator.
Dimensions shown in: mm
Specications and dimensions subject to change
www.ck-components.com
PROCESS – CONTACT AND CABLE EXTRACTION
To extract contacts in the first connector’s row:
To extract contacts in the second connector’s row:
1–PlacewireintoMDMA-Extracttool-01P/N:C115373-0006
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.
Sameprocessthatfirstrowexceptextractiontoolrotatedat180°.
1–PlacewireintoMDMA-Extracttool-01P/N:C115373-0006
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!!(Exampleforthefirstrow):
Secondrow
Firstrow
INTERFACIAL SEAL DESCRIPTION P/N
340103207B C115366-9218
www.ck-components.com April 2016
ASIA
Tel: +852.3713.5288
EUROPE
Tel: +33.1.60.24.51.51
AMERICAS
Tel: +1.617.969.3700
ACCESSORIES
INTERFACIAL SEAL SIZE DESCRIPTION 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
DUST CAP SIZE DESCRIPTION P/N
9P MDM-115288-6927-DUSTCAP-9P C115288-6927
9S MDM-115288-6928-DUSTCAP-9S C115288-6928
15P MDM-115288-6929-DUSTCAP-15P C115288-6929
15S MDM-115288-6930-DUSTCAP-15S C115288-6930
21P MDM-115288-6931-DUSTCAP-21P C115288-6931
21S MDM-115288-6932-DUSTCAP-21S C115288-6932
25P MDM-115288-6933-DUSTCAP-25P C115288-6933
25S MDM-115288-6934-DUSTCAP-25S C115288-6934
31P MDM-115288-6935-DUSTCAP-31P C115288-6935
31S MDM-115288-6936-DUSTCAP-31S C115288-6936
37P MDM-115288-6937-DUSTCAP-37P C115288-6937
37S MDM-115288-6938-DUSTCAP-37S C115288-6938
EXTRACTION TOOL TYPE DESCRIPTION P/N
Stainlesssteeltip MDMA-Extracttool-01 C115373-0006
CRIMPING TOOL DESCRIPTION P/N
M22520/2-01 C995-0001-584
LOCATOR TYPE DESCRIPTION P/N
Malecontacts MDMA-Locator-P-01 C115373-0001
Femalecontacts MDMA-Locator-S-01 C115373-0002
TEST RETENTION TOOL DESCRIPTION P/N
MDMA-Retentiontool C115373-0003
Maleand
Female
Contacts