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PCB Connectors

Hello I am making a PCB Board whose input is 50V(dc) and 40A(dc), and output is 600V 4 A. I am not sure how to connect my board through external wires from power supply and to load.
Please someone guide me how to select connectors.
Thank you


Active Member
If it's direct to PCB tracks, something like these:

There are many variations, eg. these at a tenth the price on aliexpress (in hundred batches).

A lot of commercial high current gear just uses copper bars bolted through the PCB (and any screw terminal components) with the ends protruding & terminal bolts through them.


Well-Known Member
Most Helpful Member
If you can find suitable PCB screw terminals or barrier strips that could work. But for 40A or 600V you might just want to get solder-down screw points to which you can connect wires to that have ring terminals on the end.

https://www.digikey.ca/products/en/connectors-interconnects/terminal-blocks-barrier-blocks/368?k=barrier strip

https://www.digikey.ca/products/en/connectors-interconnects/terminals-screw-connectors/396?k=PCB screw terminal

If you want to get real fancy there are also anderson power poles which are hermaphroditic connectors that can snap together to make a connector in various configurations. There exists a counterpart that goes onto a PCB so you can plug wire-to-wire or wire-to-PCB. They are crimp terminals for the wire-end so you can use a budget crimper made for them, the official $$$ crimper, or a carefully selected non-insulated crimper that looks similar (that's what I do). If this is for a production product you definitely want the professional crimper.
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