Thermodes for Hot Bar Reflow Soldering and Bonding

The hot bar soldering process – also known as resistance soldering – is a selective soldering process where two solder coated parts are heated to a sufficient temperature to cause the solder to melt, flow, and re-solidify, forming a permanent electro-mechanical bond.

The heating and reflow of the solder is accomplished using a hot bar soldering machine fitted with a heating element called a "thermode" or "hot bar" which is heated and cooled down for each connection made. The resistance of the thermode to the flow of electrical current is what produces the heat needed to melt the solder and create the connection.


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