Alignment key ERNI

ERNI has developed a solution to the dilemma posed by high pin-count hard metric (HM) connectors and the need for precision connector mating combined with sufficient play between subtraack guide rails and printed-circuit board (PCB) cards. The answer is ERNI's pre-alignment module.

According to IEC 61076-4-101 standard, 2 mm HM connectors may have hundreds of contacts. At the same time, the plug-in board connectors and backplane connectors must mate precisely in order to avoid damage. On the other hand, there must be play between the cards and rails to avoid compression stress on the PCB.

A further reasonable additional option is the electrical contact model. Shielding is low resistant because of gold plating, and therefore allows electric current to flow with 40A at 20°C through a large diameter. A corresponding derating chart is available.

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