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Commercial connectors with MIL characteristics

The CMM 220 system from In2Connect is a low-cost, commercial off-the-shelf (COTS) 2mm pitch connector offering reliability under even the most extreme environmental conditions within -55 and +125oC (IEC 68-1).

Designed for aerospace, military and transportation, instrumentation and control applications, the CMM 220 is currently used in IFES, HUD, mobile radios, power supplies and engine controls, costing a fraction of a MIL-C listed solution.

For many years, the ITW McMurdo standard for aerospace applications has been the HE 801 and 801CX (mixed layout) series, twopart printed circuit board connector system utilizing a 1.27mm staggered pitch with 2.54mm between rows. These are still manufactured, and continue to satisfy the requirements of BS9525, NFC 93-424 and MIL-C 55302 for absolute contact integrity, even under conditions of 13.3Hz to 2000Hz vibration with random superimposed sinusoids to simulate gunfire.

This new CMM 220 Series is similar in board-to- board height and footprint to the popular ITW McMurdo M200/M300 commercial series. However, it offers the user the HE 801'mixed layout' concept, providing the designer with a choice of High Frequency, High Power, Low Frequency and Fibre Optic in a common, space-saving footprint at COTS pricing. As well as male and female crimp contacts, termination styles are also available for straight or right angled through-hole, surface mount and press-fit, along with an extensive range of PCB fixing hardware.

The contacts themselves are a high-reliability design which copes well with extreme vibration, having an integral jack screw mechanism that provides security to the mated pair. Like its MIL-C counterpart, the CMM 220 connector is rated at 10Hz to 2000Hz, and will withstand shock at 100g for 6ms, and 500 mating/unmating duty cycles.

The current rating of the CMM220 connector is 3.3A at 25^oC and 240Vdc, with high power contacts up to 20A, and coaxial contacts to 6GHz in 50 and 75ohm impedances. The high temperature UL94-V0 insulator allows infrared or vapour phase soldering. A fully screened version is available.

t: +44 (0) 1962 73337
f: +44 (0) 1962 736726
e: sales@in2connect.uk.com
w: www.in2connect.uk.com
EDI-new-products-wk30-2005