Posiband technology improves D-type connectors
An Aerco product story
Edited by the Electronicstalk editorial team Jul 22, 2009
Aerco's positronic sub-miniature D-type connectors use Posiband pin technology to improve the creation of female closed-entry contacts, offering an advantage over standard connectors of this type.
Posiband technology, developed by Positronic and used in military connectors for a number of years, is now being imported into other products, including new D types.
Most D sub-miniature connectors use a sleeve design where the main part of the contact has sloped, split tines to provide force on the male contacts when mating.
Although a sleeve is then placed over the main part of the contact to provide a closed entry, the split tines are still susceptible to being pried open and also, because the tines must be depressed to provide normal force, the contact area is reduced with extensive use.
Posiband contacts have a two-piece contact design with each piece serving a separate function.
The main body of the assembly provides a true closed-entry contact while a spring clip, made of spring-tempered beryllium copper, provides normal force on the male contact.
This makes Posiband contacts much less susceptible to damage than traditional split-tine designs; and because the Posiband pin is not sloped, the interface area between the male and female contacts is greatly increased, providing better electrical integrity.
Another significant advantage is that, because the Posiband spring clip provides the contact force, the base contact can be made of brass, which has excellent crimping properties.
The Posiband system is available on RD series, HD series, DD series, PCD series, and PCDD series connectors.
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