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The PosiBand Contact System

Mon, 07/06/2009 - 11:31am

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The new PosiBand has a closed entry contact and is a significant improvement over the legacy design and overcomes many of the weaknesses that are associated with the “split tine” and sleeve approach. The PosiBand separates the mechanical and electrical function of the contact system, and a spring clip provides a more stable mechanical function. The base contact provides a true closed entry feature and enhanced electrical stability. Greater contact interface between male and female contacts is achieved through this design when compared to the “split tine” design. Greater contact interface can provide greater resistance to vibration and corrosion factors found in harsh environments. PosiBand system has a lower average insertion force when compared to the legacy design. The PosiBand has a contact resistance of 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 currant rating is 10 amps with 6 contacts energized. 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. This new contact system is now available in standard density, high density, and combination D-Subminiature connectors and is also used on many new D-Subminiature offerings, such as the high density Combo-D connector.
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