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LEMO unipole and multipole connectors
This catalogue gives the complete description of LEMO unipole and multipole type connectors. The LEMO manufacturing
programme has been extended to almost 40 series divided into 7 product families with specific mating and environmental
characteristics. Each series includes a wide variety of plug, socket, coupler and bridge plug models, available in contact
configurations adapted to all round cables, including up to 114 conductors, and a maximum diameter of 30 mm.
Watertight and vacuumtight models are also available. Since LEMO connectors are perfectly screened and designed to
guarantee very low resistance to shell electrical continuity, they are particularly adapted to applications where electro-
magnetic compatibility (EMC) is important.
Table of Contents
3 steps to select the right connector
................................................................................................................................................................................3
B Series (indoor, keyed)
Part Numbering system .........................................................................................................................................................................................13
Metal Housing models ............................................................................................................................................................................................14
Elbow socket models..............................................................................................................................................................................................25
Plastic housing models...........................................................................................................................................................................................28
Watertight or vacuumtight models ..........................................................................................................................................................................30
Bridge models ........................................................................................................................................................................................................34
Threaded-latching models ......................................................................................................................................................................................35
Alignment Key and Polarized Keying System ........................................................................................................................................................36
K Series (outdoor, keyed)
Part Numbering system ..........................................................................................................................................................................................38
Metal Housing models ............................................................................................................................................................................................39
Watertight or vacuumtight models ..........................................................................................................................................................................47
Alignment Key and Polarized Keying System ........................................................................................................................................................49
T Series (outdoor, keyed)
Part Numbering system ..........................................................................................................................................................................................52
Metal Housing models ............................................................................................................................................................................................53
Watertight or vacuumtight models ..........................................................................................................................................................................55
Plastic housing models, alignment Key and Polarized Keying System..................................................................................................................56
S Series (indoor, stepped insert)
Part Numbering system .........................................................................................................................................................................................75
Metal Housing models ............................................................................................................................................................................................76
Elbow socket models..............................................................................................................................................................................................87
Plastic housing models...........................................................................................................................................................................................89
Watertight or vacuumtight models ..........................................................................................................................................................................91
B, K and T Series
Insert configuration, Housings, Insulators, Contacts, Collets, Variant .....................................................................................57
E Series (outdoor, stepped insert)
Part Numbering system ..........................................................................................................................................................................................94
Metal Housing models ............................................................................................................................................................................................95
Watertight or vacuumtight models ........................................................................................................................................................................101
M Series (outdoor, keyed)
..............................................................................................................................................................................................123
F Series (outdoor, keyed)
...............................................................................................................................................................................................125
Spare parts
......................................................................................................................................................................................................................127
Accessories
.....................................................................................................................................................................................................................137
Tooling
.............................................................................................................................................................................................................................151
Panel cut-outs and PCB drilling pattern
.......................................................................................................................................................................157
S, and E Series
Insert configuration, Housings, Insulators, Contacts, Collets, Variant.......................................................................................103
Cable assembly
(B, K, T, S and E series) .......................................................................................................................................................................169
Technical characteristics
...............................................................................................................................................................................................182
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Precision modular connectors to suit your application
Over 75000 connectors
Since its creation in Switzerland in 1946 the LEMO Group has been recognized as a global leader of circular Push-Pull
connectors and connector solutions. Today LEMO and its affiliated companies, REDEL and COELVER, are active in
more than 80 countries with the help of over 40 subsidiaries and distributors.
The modular design of the LEMO range provides over 75000 connectors from miniature ø 3 mm to ø 50 mm, capable of
handling cable diameters up to 30 mm and for up to 114 contacts.
LEMO’s Push-Pull Self-Latching Connection System
This vast portfolio enables you to select the ideal connector configuration to suit almost any specific requirement in most
markets, including medical devices, test and measurement instruments, machinery, audio video broadcast, telecommuni-
cations and military.
This self-latching system is renowned worldwide for its easy and quick mating and unmating features. It provides absolute
security against vibration, shock or pull on the cable, and facilitates operation in a very limited space.
The LEMO self-latching system allows the connector
to be mated by simply pushing the plug axially into
the socket.
Once firmly latched, connection cannot be broken by
pulling on the cable or any other component part other
than the outer release sleeve.
When required, the connector is disengaged by a
single axial pull on the outer release sleeve.
This first disengages the latches and then withdraws
the plug from the socket.
LEMO connectors are recognized by the Underwriters Laboratories (UL). The approval of the complete system (LEMO
connector, cable and your equipment) will be easier because LEMO connectors are recognized.
CE marking
means that the appliance or equipment bearing it complies with the protection requirements of one or
several European safety directives. CE marking
applies to complete products or equipment,
but not to electrome-
chanical components, such as connectors.
LEMO connector specifications conforms the requirements of the RoHS directive (2011/65/EU) of the European Parlia-
ment and the latest amendments. This directive specifies the restrictions of the use of hazardous substances in electrical
and electronic equipment marketed in Europe.
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UL Recognition
CE marking
RoHS
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Step 1: Select connector series
3 steps to select the right connector
Select the appropriate LEMO connector series according to the environmental parameters that will affect your device
or cable such as indoor, outdoor, temperature range, ingress protection of the mated connector and of your device.
Use the table shown on page 4.
Part number coding
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Step 2: Select connector size
B, K, T, S or E
.
.
Use the section (mm
2
) or the AWG of your cable wire to select the optimal contact diameter (values vary between
solder, crimp or print contact), see page 8.
Use this optimal contact diameter to determine the right connector size as well as the insert configuration, see page 6.
Part number coding
.
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Step 3: Complete the part number
0, 1, 2, 3, 4, 5 or 6
.
.
Now that you know the series, as well as the insulator configuration, complete the part numbering system with the help
of the following table.
Part number coding
.
.
.
B Series (indoor, keyed)
Model
39
76
14
Series
39
76
14
Insert
configuration
57
57
Housing
material
64
64
Insulator
material
64
64
Contact
64
64
Collet
68
67
Variant
71
71
T Series (outdoor, keyed)
K Series (outdoor, keyed)
S Series (indoor, stepped insert)
53
53
Note:
Figures in the above table refer to the catalogue pages.
E Series (outdoor, stepped insert)
95
95
103
103
57
112
112
64
112
112
64
112
112
64
119
115
70
121
121
71
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