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Electricity & Electronics Resources

Soldering

Some projects in Electricity & Electronics require the soldering of components into an electrical circuit. Solder is a metal alloy that melts at the relatively low temperature provided by a soldering iron, insuring good and lasting connections between electrical components.

Electronics grade solder is usually 60% tin - 40% lead or 60/40 with a rosin core. This solder starts to melt at 183°C (361°F) and is fully melted at 192°C (376°F). Rosin is a "flux" to help the molten solder to flow into the joint. Flux also removes oxides which form during heating. When you solder, you will see the flux as a brown fluid bubbling away from the joint. Note that acid fluxes should never be used in electronics applications. Use a small diameter solder for electronics work.

Here is a primer on how to solder: Electronics Primer: How to Solder Electronic Components

Electronics Primer

See our Electronics Primer for additional resources.