Military Systems magazine - Edition 1- 2022

Page 34

M MILITARY SYSTEMS & Technology

nano connectors & cables serve modernized rugged electronics high speed signal technology is being adapted everywhere possible to serve defense, space, medical and commercial circuits.

ortability and outward utilization of sensor and detector chip technology has pushed the envelope as well as the functionality of today’s circuitry. with sense and detection chip systems we are placing devices in and on highly active and portable devices. Signal acquisition and data processing is being done more at the source for accuracy and speed. The data is then being routed by cable to motor-drives, displays and or data collection libraries. Circuits and chip technology operate at 5.0 volts and less while current flow is going below 200 millivolts to sometime microvolts. Insulation voltages will be less than 50 volts in many cases. we see examples daily in circuits designed into unmanned vehicles, drone swarms or cube satellites. remote controlled defense equipment from space to air to ground based rovers all depend on the newer circuit technologies for both electronic performance as well as mechanical resilience.

Fortunately, interconnect solutions are ready and available. The nano-D has become today’s reference for smaller, lightweight and rugged interconnections that can handle up to 30 AwG Teflon® insulated wiring. The nano-D standard is set with a pin to pin spacing of .025” center line system compared to Micro-D spacing at .050” pitch. The nano-D connector is available in formats that support PC board mounting in surface mount technology, thru-hole and edge card assembly as well as various wiring versions. The amazing thing about this nano-D is it performs in rugged conditions and offers improved signal support.

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It’s worth noting that Omnetics nano connectors are tested beyond the military standard specifications to insure performance beyond today’s view of circuit applications. Although the standards specification calls for at least 200 mates and de-mates, the nano-D uses 17,200 ksi tempered BeCu spring-pin to socket interface that can be mated and un-mated over 2000 times. The connector resistance runs from 12 to 15 milliohms and only has a very low capacitance of 2.0 pf to 2.4 pf. These specs are ideal for the new higher speed, lower voltage signals they are supporting. we remember that as signal speeds increase, the wavelength of each signal is shorter and potentially more vulnerable to capacitance as well as shock and vibration. As signal speed continues to increase, the specialty designs will perform by increasing the distance from pin to pin within the connector insulator housing. At the same time, designers are being challenged today to combine ruggedized high density, lightweight, cable and connectors with

Mixed signals connector

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