DSEI 2017: Snap fit connectors based on proprietary contact technology

12th September 2017
Posted By : Mick Elliott

The Snaptac series of circular and rectangular miniature snap fit connectors from Smiths Interconnect is now available from Aerco. The Snaptac series is an ultra-reliable, extremely robust hi-rel interconnect system for use in dirty and contaminated environments, such as land-based military scenarios, where fast and easy mating/unmating are needed.  

Lightweight and compact, Snaptac connectors suit multiple military applications, including tactical communications equipment and lightweight, wearable soldier systems that are vital to modern warfare.

The connectors combine Smiths Interconnect’s proprietary high-reliability hyperboloid contact technology in a spring-loaded form factor for the first time, enabling extended operation within a sealed while unmated connector system.

The hyperboloid contact technology is resistant to shock and vibration while the compressible HyperSpring spring loaded contacts inside cannot be damaged or bent from mishandling.

As Snaptac connector series contacts have a target and chisel blade contact mechanism with an inherent self-cleaning wiping action that removes surface contamination, potential mating and connectivity problems (such as those which occur when the bores of conventional socket contacts are contaminated with mud and other detritus) does not occur.

In addition, both plug and receptacle have sealed when unmated characteristics.

Snaptac connectors are available as circular interconnects with 7, 13 and 19 contacts, AWG 28 – 24 or rectangular connectors with 12, 21 and 30 contacts. Both are available with and without over-moulding, plus the circular connectors can also be supplied in a 90° overmoulded version.

Receptacle styles are solder cup, or straight through.

Locking mechanisms are simple and fast: snap on for the circular connector range and push-pull for the rectangular range.

The Snaptac connectors are sealed to IP67 when in mated or unmated condition and incorporate full line EMI shielding, with dust caps available to ensure full EMI shielding and protection when in the unmated condition.

They can be mated and un-mated up to 10,000 cycles. Operating temperature range is -55degC to +85degC.

Electrical characteristics for both the circular and rectangular ranges are 360° EMI shielding, current rating 3A@25degC per contact, dielectric withstanding voltage between contacts of 500 Vrms at sea level and 150 Vrms at 21336m.

Contact resistance (low level) is 15 mΩ for each contact; insulation resistance is 5000 MΩ at 500 VDC.


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