CMM Micro connectors

CMM connectors are designed to meet or exceed electrical & mechanical performances of MIL-DTL-55302F and BS-9525-F0033 standards. This modular connector allows more than 20 million arrangements. 

Main features:

  • Extreme modularity (HF, HP, LF contacts, from 1 to 3 rows, up to 120 pins)
  • 2mm pitch
  • Board to board, board to wire, wire to wire configurations 
  • Space saving up to 60% , weight saving up to 50% compared to other existing rectangular connectors with same functionalities
  • Robustness with PPS material: no humidity absorption, oxygen free, radiation resistance, and solvent resistance
  • Temperature cycling between -60°C and + 260°C
  • Hightly resistant to vibrations and shocks 
  • Various and numerous fixing hardwares
  • Leadtime from 1 week, low MOQ
  • Online services iOS/Androïd for designers (automatic part numbering system, automatic 2D and 3D drawings) 
Six Things to Consider When Specifying Electrical Connectors for the Mil-Aero Market
Harsh-environment military and aerospace electronics applications require specialized interconnect solutions. The interconnect solutions for these applications not only have to withstand extreme environmental conditions, such as extreme operating temperatures, high vibration, high pressure, and ...
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CMM220 - Captive Screw Fixing M16C
In the world of interconnect solutions especially in the Military and Aero applications having a secure fixing is one of the main requirements of the market. Many designers work on the creation and innovation in the field of and connector fixings features in order to improve customer experience ...
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Miniaturization of soldered contacts
Due to the need for miniaturization in a growing number of electronics systems, more and more designers need to overcome the lack of space with their connecting solutions. In those reduced spaces, they also need to integrate more complex functionalities. For example, some RF (radio-frequency) fu...
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Avant-Premiere : New quarter turn fixing for CMM220
A new quarter-turn fixing has been added to the standard options for the CMM220 series connectors and will be available starting end of july 2015. It's a fast mate solution developed for harsh environment applications needing regular mating and unmating (such as instrumentation & test...
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If you need very small quantities quickly
If you need a few pieces of connectors during your design stage or testing, it can be difficult to get small quantities without high additional fees or minimum amount of pieces. Nicomatic allows to purchase any CMM rectangular plastic connector from 1 piece, with no additional charge. The object...
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How to preserve a long life and quality to your connectors
A wide range of lock fixing hardware are available for all plastic connectors CMM and metal shell DMM  They maintain the connectors locked in severe conditions such as shocks, vibrations...  To allow full functionality and a long life cycle of your connectors, make sure you ...
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CMM Multi-Mix: The 3rd contact makes the difference!
CMM Multi-Mix design feature comes along with many of its former CMM attributes including space savings, weight reductions, unlimited choices of standard configurations and total contact reliability. What's different is that you can mix 3 types of contacts into one CMM housing. As the tre...
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A few nice CMM fixings functions
One of the features of CMM connectors is high modularity that is by far the largest on the market. Let's have a look on some of fixing functions that make the difference:
  • M17 Fixing with Racking Function Before Tightening: allows to mate half the way and then to tighten for an ea...
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High power contacts crimping
The new generation of HP (high power) contacts is crimped using a new process. Contacts concerned:
  • series 30 (3mm dia.) for CMM220 & CMM320  
  • series 22 (2.2mm dia.) for its series CMM340
The crimping is optimized by using a 8-indent new technol...
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CMM320 series 90° SMT connector !
CMM series 320 LF 90° SMT (3-row right angle SMT connector) extension from Nicomatic is the most compact connector existing on the market today in its category (2mm pitch - up to 120 contacts). The SMT technology applied to low profile connectors is usually quite problematic when it gets ...
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Latch CMS 90
NICOMATIC offers 90° SMT latches for CMM100/200 series female connectors. It completes the existing range of friction and straight SMT latches available in the range. The SMD latch is generally used in board-to-wire interconnection systems where a connector is fixed to female housings on cab...
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CMM backpotting
Backpotting is the process of filling the back area of a CMM connector, at the entrance area of the contacts inside the plastic housing, using liquid epoxy comprised of Stycast 2651 MM black as the base and Catalyst 9 as the initiator (cross linker). It is then cured to solid stage. Descripti...
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CMM Crimp Gauge Reducers
Nicomatic offers a solution for crimping of AWG 30 and AWG 32 wires. Using crimp gauge reducers as inserts into standard male or female signal contacts you can achieve a reliable crimp connection meeting the standards needed for typical mil/aero applications. There are two different ferrule o...
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CMM340 series is unique!
CMM340 serie offers the widest possible mixed layout choice present on the market today, up to 120 low frequency contacts, 64 high frequency or high power contacts of a smaller size (2.2mm dia.) in a 3-row environment.  Series 22 Coaxial high frequency contacts allow high speed si...
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CMM Interconnect system
CMM interconnect system is a 2mm pitch connector with proven high reliability under the most extreme environmental conditions of use, vibration & shock severity, high temperature (250°C for 1000 hours exceding the 85°C per the MIL), humidity, salt spray, corrosion and high altitude (...
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In French, Connecteur Micro-Millimetrique or micro-millimetric connector. Its is a 2mm pitch connector.

Board to board, board to wire and wire to wire, CMM connectors give the designer a wide choice of configurations in data transmissions (HF or LF) and high power supplies (HP). The connector is available in mixed layout or in all signal.

Yes. For the CMM100 & 200, an optional latch offers the security of interconnection. For the CMM220, 320/340 and CMM Multi-Mix, an internal locking system is available (jackscrew mechanism).

Nicomatic offers 4 product families : CMM100/200 series, CMM220 series, CMM320/340 series and CMM Multi-Mix series :

CMM 100, simple row of contacts, signal (LF) only
CMM 200, double row of contacts, signal (LF) only

CMM 220 : double row of contacts, this connector benefits from the option of a mixed layout, giving the designers a choice of high frequency, high power, fiber optic (upon request) and low frequency.

CMM 320, three rows environment with up to 16 special contacts (up to 120 LF contacts).
CMM 340, three rows with up to 64 special contacts if no signal contact is used.


CMM Multi-Mix, 2 or 3 rows with possibility to mix HF, HP and LF contacts of same type in one connector.

CMM 100, 02 to25
CMM 200, 04 to 50
CMM 220, 04 to 60 (15 contacts HP/HF max.)
CMM 320, 06 to 120 (20 contacts HP/HF max.)
CMM 340, 06 to 120 (64 contacts HP/HF max.)

The following termination styles are available : board solder, surface mount, crimped on cable or solder on cable and pressfit.

up to 30 A depending on cable and test routine used.

Up to 11 Ghz (depends on the cable used and test routine followed).

Yes. This is a 1 time reinsertion for LF crimp contacts, 50 cycles for special contacts HF/HP series 30 (Coaxmatic 30) and 5 cycles for special contacts HF/HP series 22 (Coaxmatic 22).

The contacts are qualified regarding withstanding voltage at high altitude (70 000 ft) according to MIL DTL 55302-3F standards.

Yes. They are qualified to function under 3A @250°C (without flame exposure) during up to 15mn.

No, Nicomatic is not submitted to ECCN / EAR. Products are in the category "not controlled", origin: France.

Polyethylen hd (PE hd) ou polypropylen (PP).

7.3mm spacer (+/-0.5mm) is standardised. For longer spacers, it is recommended to make tests before.

All CMM are RoHS compatible.

The gold flash plating is backward and forward compatible. Backward means soldered with tin lead and forward with pure tin soldering process. Between the 2 processes there can be a difference in temperature of 20 to 30C and 10 to 30 seconds. Gold flash plating withstands all the different curves, which is a big advantage compared to tin/lead or pure tin.
This also means that you can use your pure tin or tin/lead soldering process for CMM connectors, the choice being dependant more on the other components of the board and the decision to have a total RoHS compliant product.

Yes. The connector has been developed to perform under conditions of extreme vibration. It can be used in a Formula 1 or in a fighter ! (Shock severity: 100g for 6 ms vibration 0,75 mm, 10g RMS 6 hours long random with superimposed sinusoid. No intermitances measured when using on HSLI (High Speed Logic Interrupt) detector with a trip threshold of 2 ns).

Yes. Thanks to the insulator made of fiber glass filled thermoplastic, the temperature can reach up to 260C. Standard cycling temperature ranges from -60°C to +260°C.

CMM as a highly modular standard system allowing up to 20 million configurations!

Therefore, numerous configurations are possible given the type of connector. For example, in a CMM 220 configurations are limited by the space up to 15 cavities. In a CMM320, 32 contacts can be mixed with 20 special contacts "Coaxmatic30". In a CMM340, these possibilities are much higher.
A mixed version of CMM320 and CMM340 allows the best combination in terms of mixed layout and space.

Stycast 2651 MM and Catalyst 9 (8%to 10%): P/N Stycast 2651-40 CAT 9

The polarization key can be moved every 2mm. In a CMM 220 connector with 24 ways, we get 11 positions. Add to the P/N "KLL" ("K" means direction 1 towards contact 1, and 2 represents the opposite direction ; "LL" means the number of the shift).

J24 Crimp tool setting 7 (=3,3 daN) or J26 Crimp tool setting 6 (=4,7 daN).

As a general rule NICOMATIC coaxial contacts are always like 30-nnnn-xx. What means xx ?

The first letter x is related to the inner contact

The second letter x is related to the outer (shielding) contact

S = crimp

Z = solder

September 2006
June 2007
June 2008
February 2009
September 2010
May 2011

As shown underneath, it is not possible to use a latch key to squeeze / lock the screw nut.

When the current comes from a PCB and out, the designer prefers to put the female on the PCB and male on cable or flex rigid PCB. The option of reverse fixing allows to use the F fixings on the female (CMM 222) and then the M fixing on the male connectors (CMM 221) whereas it is normally not possible. It is a practical solution especially appreciated in a number of applications.

Yes. We don't use pure beryllium for the contact sockets, but a beryllium++(<=2%) copper alloy. That is authorized and compliant with RoHS & REACH regulations.

M12 for Y female
F22 F24 for Y male
F23/F25/F26/F30 for V male
PS : F23 and F26 have the same characteristic only the head of the screw is different. Please refer to the CMM Catalogue Guidelines
Comment: F24 is more recommended than F22 for a 2mm board

We go as small as AWG32 thanks to a gauge reducer. Please refer to catalogue page 112 (May 2011 catalogue version).

CMM micro-connectors are submitted to vibration test after being submitted to life test (2 500 mating/unmating cycles) and of course they are mated (between 2 connectors and not 1 connector to PCB). The 3-axis vibration test allows to check the signal stability (no interruption greater than 1 micro second), which is a requirement for MIL-DTL-55302F standard.

Yes. NICOMATIC offers disposable backpotting moulds for CMM connectors : on-site harnessing is simplified thanks to a superior retention of crimped wires.

No. But you can use our silicon interfacial seal which has an extra protection for the connector:
- Anti water streaming function
- Protection against condensing, vapour
- Anti dust function

You can consult our custom design team to develop the right bespoke solution you may need under


LF contacts: 1 200 V RMS
HP 22 series: 900 V RMS
HP 30 series: 1 500 V RMS
(sea level figures only)

Basic colour codes:
0 = black
1 = brown
2 = red
3 = orange
4 = yellow
5 = green
6 = blue
7 = violet
8 = grey
9 = white

Applications with voltage used at 1 500v Ac exist, so this should not be a problem.

The best recommendation is to test the connector inside your own environment condition.

The insulation is PTFE (Teflon). The "Er" value is 2,10.

LVDS is becoming more and more important, DMM Micro-D Mix connector has been created for this trend and meets 100 ohm impedance required for LVDS. Nicomatic special 4D floating connector also meets LVDS requirements and has been tested and approved by some prestigious worldwide clients. CMM also can accept LVDS signal @ 400 MHz, impedance 100 Ohm. Please contact us.

It is difficult to give a standard weight of CMM320 or DMM220 as it varies with the fixing and number of contacts but it is definitively a few grams for example:322Y036H01 is 4.5g and 322Y054H05 is 5.9g.

FOR DMM 10 contacts for example :D222SH-10-D03 is 2.13g

Contact area is copper alloy/ Ni (2µ) + Au 1µ
Contact tail is copper alloy / Ni (2µ) + Au flash 0.1µ
Body is copper Alloy / Ni 2 µ+ Au 0.2 µ
Socket boby is Beryllium Alloy / Ni 2 µ + Au 1.25 µ

Nickel 2µ is used as a barrier against migration of Au. If you put Au directly on copper that would lead to gold pollution and then to oxidation, so there will be a very bad contact resistance.

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