LEMO M Series
M Series micro-connectors
LEMO M Series range of triple-start micro-connectors
provide significant space savings in comparison to MIL
38999 Series III connectors, and are LEMO’s smallest
multi-pin, fully shielded, vibration-secure and sealed
connectors available, offering a lightweight connection
with high pin-count density, 360º EMC shielding
protection, and LEMO rugged quality.
•
•
•
•
Soldier and vehicle-
mounted equipment
Communications
UAV’s/UMV’s
Avionics and
Aerospace
ON ENCLOSURE
FLANGE TO PCB
DEPTH
LEMO
M-Series
45%
SAVE UP TO
MIL
38999
LEMO M-Series high-strength aluminium connectors
incorporate a triple-start fast-locking ratchet mechanism
for use in high vibration and harsh environments,
providing significant size and weight advantages over
MIL-38999 connectors and other micro circular
connectors. Already selected for use on the F1ECU
and a number of military and avionics applications,
the M Series is continuing
the excellent reputation
of LEMO connectors’
for high quality and
reliable interconnection
solutions that meet
customers requirements.
Main features and benefits include:
•
•
•
•
•
Triple-start thread ratchet coupling mechanism
for fast (3/4 turn) & secure connection
Small size with high contact density for
significant space savings
Multiple keys and keyways for ease of mating
and security
Short flange to pcb depth for greatly reduced
enclosure sizes and cost savings
Integral backshell, but with MIL backshell
options if preferred
•
Unique LEMO precision gold-plated contact
system for exceptional performance and long-
term reliability
•
With power pin and reduced crimp barrel
contacts, accommodates wire from 16 to 32 AWG
Designed for use in harsh environments, M Series
connectors have been tested to the full range of MIL
tests including vibration, gunfire, altitude, lightning,
temperature, immersion,chemical and flammability,
clearly demonstrating capability of the range to handle
many aerospace, military and security applications.
This catalogue provides a summary of the M Series
range and accessories with comparisons to some
popular MIL 38999 shell sizes to demonstrate the
potential equipment savings that can be made by
adopting the M Series.
Note that this catalogue does not cover the whole
M Series range and other housings are available –
some examples below. The full catalogue giving full
details of the complete M Series range is available
via our website –
www.lemo.co.uk
The M Series has a wide range
of shell design options to suit
customer requirements.
Variants include:
•
•
In-line plugs (FM* & FG*)
and sockets (PM* & PH*)
Fixed sockets -front
panel, back panel and
bulkhead fixing
Watertight pcb sockets
when unmated
Two coupling nut styles –
knurled and arctic grip
Three cable fixing options
– metal tie-wrap or
constant force spring
clip, MIL backshell
and overmoulding
•
•
•
2
LEMO M Series
Examples of COTS alternatives
Possible COTS alternatives to popular MIL 38999 shell
configurations selected from the M Series range below
give an idea of the scope for significant space reductions
whilst still meeting rating requirements for your
application. These are some examples only and many
other housings and contact configurations are
available – see our full LEMO M Series catalogue for
further information.
LEMO M Series a few examples with part numbers of COTS equivalent options
MIL 38999 Shell size
No of contacts
Contact size
Nominal dia mm
9-98
3
20
21.8
9-35
6
22
21.8
11-98
6
20
24.6
11-35
13
22
24.6
LEMO COTS alternative
No of contacts
Wire sizes
Contact rating
Plug nominal dia
Description
No
AWG
Amps
mm
Straight plug with
integral backshell,
crimp contacts
0M.303
3
20-22-24
8A
13.1
1M.308
8
22 -24- 26*
5A
14.6
2M.308
8
20-22-24
10A
17.6
2M.319
19
22 -24- 26*
4A
17.6
FGN.0M.303.XLC
FGN.1M.308.XLC
FGN.2M.308.XLC
FGN.2M.319.XLC
Bulkhead socket with
integral backshell,
crimp contacts
PEN.0M.303.XLMT
PEN.1M.308.XLMT
PEN.2M.308.XLMT
PEN.2M.319.XLMT
Fixed socket, watertight
when unmated,
pcb contacts
HEN.0M.303.XLNP
HEN.1M.308.XLNP
HEN.2M.308.XLNP
HEN.2M.319.XLNP
In-line socket with integral
backshell, crimp contacts
PHN.0M.303.XLM
PHN.1M.308.XLM
PHN.2M.308.XLM
PHN.2M.319.XLM
Heatshrink boot
Straight boot
UKT.0001272
UKT.0001272
UKT.0001273
UKT.0001273
Right angled boot
UKT.0001277
UKT.0001277
UKT.0001278
UKT.0001278
LEMO CABLE
Cable to DEF STAN 61-12,
braided screen, or DIN,
VDE, UL or proprietary
cable as requested
For cable end to take overmoulding add "T" to end of part number
e.g.
FGN.0M.303.XLCT
PHN.0M.303.XLMT
e.g.
FGN.1M.308.XLCT
PHN.1M.308.XLMT
e.g.
FGN.2M.308.XLCT
PHN.2M.308.XLMT
e.g.
FGN.2M.319.XLCT
PHN.2M.319.XLMT
7-2-3C
7-2-8C
16-2-8C
7-2-20C
Optional back end
for overmoulding
To add an optional MIL backshell fitting, add 'M' to the end of the part number
e.g.
FGN.0M.303.XLCM
PHN.0M.303.XLMM
M12x1
e.g.
FGN.1M.308.XLCM
PHN.1M.308.XLMM
N/A
e.g.
FGN.2M.308.XLCM
PHN.2M.308.XLMM
M15x1
e.g.
FGN.2M.319.XLCM
PHN.2M.319.XLMM
M15x1
**Optional back end
for fitting backshell
Backshell
Thread size
**Straight backshell option
N/A
shell too small
UKT.B1.M12.04.1ZN
UKT.B1.M15.06.1ZN
UKT.B1.M15.08.1ZN
**90º backshell option
N/A
UKT.B3.M12.04.1ZN
UKT.B3.M15.06.1ZN
UKT.B3.M15.08.1ZN
* Reduced barrel contacts available for smaller wire gauges down to 32AWG.
** Note standard M Series has integral backshell.
Standard contacts
Reduced barrel contacts
For reduced barrel contacts change the 14th character
of the LEMO part number from “L” to “B” for male
contacts and from “M” to “P” for female contacts.
3
LEMO M Series
Examples of COTS alternatives
A few more possible COTS alternatives to popular MIL
38999 configurations are given below.
LEMO M Series a few examples with part numbers of COTS equivalent options
MIL 38999 Shell size
No of contacts
Contact size
Nominal dia mm
13-4
4
16
29
13-35
22
22
29
15-35
37
22
32
17-35
55
22
35
LEMO COTS alternative
No of contacts
Wire sizes
Contact rating
Plug nominal dia
Description
No.
AWG
Amps
mm
Straight plug with
integral backshell,
crimp contacts
2M.304
4
16-18-20
12.0
17.6
3M.330
30
22-24-26*
3.5
20.9
TM.340
40
22-24-26*
3.0
23.4
LM.368
68
22-24-26*
2.5
29.4
FGN.2M.304.XLC
FGN.3M.330.XLC
FGN.TM.340.XLC
FGN.LM.368.XLC
Bulkhead socket with
integral backshell,
crimp contacts
PEN.2M.304.XLMT
PEN.3M.330.XLCT
PEN.TM.340.XLMT
PEN.LM.368.XLMT
Fixed socket, watertight
when unmated,
pcb contacts
HEN.2M.304.XLNP
HEN.3M.330.XLNP
HEN.TM.340.XLNP
HEN.LM.368.XLNP
In-line socket with integral
backshell, crimp contacts
PHN.2M.304.XLM
PHN.3M.330.XLM
PHN.TM.340.XLM
PHN.LM.368.XLM
Heatshrink boot
Straight boot
UKT.0001273
UKT.0001274
UKT.0001274
UKT.0001275
Right angled boot
UKT.0001278
UKT.0001279
UKT.0001279
UKT.0001280
LEMO CABLE
Cable to DEF STAN 61-12,
braided screen, or DIN,
VDE, UL or proprietary
cable as requested
For cable end to take overmoulding add "T" to end of part number
e.g.
FGN.2M.304.XLCT
PHN.2M.304.XLMT
e.g.
FGN.3M.330.XLCT
PHN.3M.330.XLMT
e.g.
FGN.TM.340.XLCT
PHN.TM.340.XLMT
e.g.
FGN.LM.368.XLCT
PHN.LM.368.XLMT
16-2-4C
7-2-36C
On request
On request
Optional back end
for overmoulding
To add an optional MIL backshell fitting, add 'M' to the end of the part number
e.g.
FGN.2M.304.XLCM
PHN.2M.304.XLMM
M15x1
e.g.
FGN.3M.330.XLCM
PHN.3M.330.XLMM
M18x1
e.g.
FGN.TM.340.XLCM
PHN.TM.340.XLMM
M18x1
e.g.
FGN.LM.368.XLCM
PHN.LM.368.XLMM
M25x1
**Optional back end
for fitting backshell
Backshell
Thread size
**Straight backshell option
UKT.B1.M15.04.1ZN
UKT.B1.M18.07.1ZN
UKT.B1.M18.08.1ZN
UKT.B1.M18.10.1ZN
**90º backshell option
UKT.B3.M15.04.1ZN
UKT.B3.M18.07.1ZN
UKT.B3.M18.08.1ZN
UKT.B3.M18.10.1ZN
* Reduced barrel contacts available for smaller wire gauges down to 32AWG.
** Note standard M Series has integral backshell.
Standard contacts
Reduced barrel contacts
4
For reduced barrel contacts change the 14th character
of the LEMO part number from “L” to “B” for male
contacts and from “M” to “P” for female contacts.
LEMO M Series
Contact configurations
1
2
4
3
4
3
1
2
Male crimp contacts
for plug
Female crimp contacts
for sockets
0M
302
303
304
305
2 0.9 20-22-24
3 0.9 20-22-24
4 0.7 22-24-26
5 0.7 22-24-26
5 0.9 20-22-24
7 0.7 22-24-26
8 0.7 22-24-26
4 1.3 16-18-20
10.0
8.0
7.0
6.5
9.0
7.00
5.00
12.0
1
1
2
2
1
2
2
5
1M
305
307
308
The previous pages contain a selection
of insert types to give an idea of how
the M Series compares with MIL 38999
Series III configurations. However a
much wider range of contact
configurations is offered which is
growing all the time. If you do not see
what you are looking for please contact
LEMO to see if the configuration you
require is available. All contacts other
than for pcb are crimp contacts for
which you will need a standard style
701 crimp tool and LEMO positioner.
Use the positioner code in the table
opposite to select the relevant
positioner below.
Number of contacts
Reference
Code for positioner
Contact dia. mm
Rated current
øA
AWG
DCE
Positioners for
crimp contacts
2M
304
308
8 0.9 20-22-24
10.0
1
310
10 0.9 20-22-24
8.0
1
312
12 0.7 22-24-26
7.0
2
male
female
319
19 0.7 22-24-26
4.0
2
Positioners part number
3M
322
22 0.7 22-24-26
5.0
2
Code
1
2
3
4
5
For male contacts
DCE.91.090.5MVC
DCE.91.070.5MVC
DCE.91.090.5MVC
DCE.91.070.5MVC
DCE.91.130.5MVG
For female contacts
DCE.91.090.3MVM
DCE.91.070.3MVM
DCE.91.09T.5MVM
DCE.91.07T.5MVM
DCE.91.130.5MVU
330
30 0.7 22-24-26
3.5
2
TM
325
25 0.9 20-22-24
5.0
3
DPC Manual crimping tool
340
40 0.7 22-24-26
3.0
4
Crimping tool to MIL-C-22520/7-01 for
use with positioners above.
4M
340
40 0.7 22-24-26
3.5
4
348
48 0.7 22-24-26
tbd
4
Part Number
DPC.91.701.V
LM
355
55 0.9 20-22-24
tbd
3
Contact extraction tools
Contact diameter (mm)
Part Number
DCF.93.070.4LT
DCF.93.090.4LT
DCF.93.131.4LT
368
68 0.7 22-24-26
2.5
4
0.7
0.9
1.3
5M
366
66 0.9 20-22-24
tbd
3
114
114 0.7 22-24-26
2.0
4
5