March 8, 2010
Positronic’s new PosiBand contact system, introduced in summer 2009, is now qualified to SAE AS39029. This specification covers a wide range of high reliability crimp connector contacts for use in military and aerospace applications. The PosiBand system is suitable for any application requiring rugged, high reliability connectors, and is available with crimp and PCB mount terminations, including press-fit.
The PosiBand contact system is a unique closed entry female contact system which overcomes many of the weaknesses associated with the legacy "split tine" and sleeve approach. The PosiBand separates the mechanical and electrical function of the contact system. The base contact provides a true closed entry feature and enhanced electrical stability, while the PosiBand spring clip provides more stable mechanical function.
The PosiBand design creates a greater area of contact interface between male and female contacts in comparison to that of the ‘split tine’ design, and thus provides greater resistance to vibration and corrosion factors found in harsh environments. This greater area of contact interface is achieved without increased insertion force; in fact, the PosiBand system has a lower average insertion force compared to that of the legacy design.
PosiBand contact resistance is 3 milliohms for size 20 contacts and 4 milliohms for size 22 contacts. The current rating for size 20 contacts is 14 amps with 6 contacts energized. Size 22 contact current rating is 10 amps with 6 contacts energized. Both were tested per U.L. 1977.
In addition, PosiBand contacts do not require annealing of the crimp barrel. This eliminates the possibility of unintentionally annealing the mating end of the female contact, which can cause intermittent or open electrical circuits.
The PosiBand system is available in standard density, high density and combination D-Subminiature connectors, as well as subminiature rectangular connectors. PosiBand contacts are priced the same as the legacy design.
For more detailed information about the PosiBand contact system, view the PosiBand Contact Interface white paper, contact Positronic Industries at 800-641-4054, or email us.
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