What four precautions should a technician take to help prevent ESD damage to electronic components?

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Static electricity can damage sensitive electronic components even with very small discharges, so keeping yourself and the work area at ground potential is essential. The four precautions focus on that: wear a grounded wrist strap and connect it to a proper earth ground so your body is at the same potential as the equipment; avoid touching the component terminals to prevent transferring static to the device and handle parts by the edges or with grounded tools; ground the packaging before opening to ensure the device and its container share the same potential before any handling; and connect the test equipment ground lead first so there isn’t a sudden potential difference when you probe or power the circuit. Other approaches that involve insulating gloves, touching terminals, or not grounding anything increase the risk of an electrostatic discharge damaging the parts.