Mill-Max has added to its diverse mix of press-fit pins for plated through-holes with six new offerings designed for applications where mechanical strength and/or power delivery are essential. These new PCB pins feature multi-faceted (polygon) geometries and are suitable for solderless PCB termination or for direct soldering to the board for those situations requiring it.
When these pins are pressed into a plated through-hole, the points (the major or circumscribed diameter) of the polygon, are set or imbedded in the hole while the flat sides of the feature (minor or inscribed diameter) provide relief, allowing the remainder of the plated through-hole barrel to remain intact. The result is internal board layers are not disconnected when the pin is pressed in. With a properly specified hole size, the polygon shaped press-fit feature will allow the pin to be secured in the hole while maintaining continuity throughout all the layers of the PCB.
Mill-Max employs its machining expertise to manufacture either square or hexagon shaped press-fit features to suit a variety of hole sizes and assembly requirements. Square press-fit features normally leave a larger gap between the flat side of the feature and the hole, useful for solder flow and venting of gasses, while a hexagon feature will provide more interference and greater retention.
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