SOLDERING & DESOLDERING

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SOLDERING

SOLDERING A RESISTOR TO A CIRCUIT BOARD

This simple example shows the step-by-step process to solder a through-hole component to a printed circuit board (PCB). I used a piece of prototype PCB and a single resistor.

It’s important to consider safety precautions. Improper handling of the soldering iron can lead to burns or other physical injuries. Wear safety goggles and other protective clothing when working with solder tools. With temperatures hovering around 700 degrees F, the tip of the soldering iron, molten solder, and flux can quickly sear through clothing and skin. Keep all soldering equipment away from flammable materials and objects. Be sure to turn off the iron when it is not in use and store it properly in its stand.

DANGER

BEFORE YOU START Inspect the leads or pins for oxidation. If the metal surface is dull, sand with fine sandpaper until shiny. In addition, use the sandpaper to clean the oxidation and excess solder from the soldering iron tip to ensure maximum heat transfer.

A resistor.

INSPECT

A printed circuit board.

START »

1. Bend and insert the component leads into the desired holes on the printed circuit board (PCB). Flip the board to the other side. Slightly bend the lead you will be soldering to prevent the component from falling out when the board is turned upside down.

Resistor inserted into PCB.

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