Solderless connections in avionics: connections of a Press-Fit type


Stepanova M. A.

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia



Compression electrical solderless connections are widely used in electronic systems, including devices designed for extreme operating conditions, such as automotive and aerospace equipment. The contact insertion gained such popularity due to a number of advantages over conductive pastes, welding and soldering. It demonstrates the rapidity of execution, relative ease of performance, efficiency and reliability. In most cases, forging connections are made in the holes of the PIN contact pressing mounting basic — the printed circuit board.

This article presents solderless connections, namely, press-in connections. Their advantages, basics of contact formation and application fields of this type of connections are shown.

One of the fundamental criteria for ensuring the reliability of press pin connection is the force hold contact in the hole of the PCB. This paper shows how high temperature affects the force hold contact in press-fit connection. The conducted experiments revealed clearly that the high soldering temperature could not significantly reduce hold force of the connection.


avionics; solderless connections; printed circuit boards; press-fit; forging connections; connectors; tolerances and fits; the combination of tolerances


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