Electrostatic discharge is commonly discussed in electronics handling and it has a surprising amount of misinformation. Some people think of ESD as a minor inconvenience and others think a quick touch of a grounded metal surface is all the protection needed. Neither view is entirely right.

At Princeps we source genuine electronic components from verified manufacturers globally and we see how poor ESD awareness can lead to stock damage, premature failures and expensive warranty issues. So we are going to look through the common myths and debunk them in this complete guide.

What ESD Is

Electrostatic discharge is the sudden flow of electricity between two objects at different electrical potentials which can be triggered by contact, a short circuit or an induced field. The human body builds up static charge constantly by moving. Walking across a carpeted floor can generate up to 1,500 volts for example and you won't feel a thing.

This is important because the most sensitive components such as microcontrollers, MOSFETs and op-amps, can be damaged by as little as 100 volts. You'd need around 2,000 volts to even feel a static shock. But by the time you feel the electricity, the damage has already been done.

Five Common Myths

"If I Can't Feel Or See A Spark, So There's No ESD Risk"

Visible sparks require 500–1,000 volts and feeling a shock takes approximately double that. Vulnerable components sit below both thresholds where silent, invisible discharges cause real damage.

"Touching Metal Before Handling Components Is Enough"

Briefly touching a grounded surface equalises your charge at that instant but any movement afterwards can build it back up. Moving your feet, reaching across the bench or adjusting clothing can regenerate static. A wrist strap connected to a ground point offers continuous protection and a one off touch does not.

"ESD Damage Is Obvious"

Hidden damage is a common reality. A component exposed to a sub threshold discharge can pass functional testing, ship to a customer and fail weeks later under normal operating conditions. This level of failure is difficult to trace and expensive to fix.

"An ESD Bag Protects Components On The Workbench"

ESD shielding bags protect their contents only when they are fully sealed. An open bag used as a working surface can redirect charge towards your component, because the shielding layer is designed to push charge outward, which is the wrong direction.

"Mounted Components On A PCB Are Safe"

A soldered component has more resistance to ground than one handled loose, which lowers the risk. ESD protections are important to have in place throughout assembly, not just during initial handling.

What Practical ESD Protection Looks Like

Good practice doesn't need an elaborate setup but it does require consistency:

  • Wear a correctly fitted anti static wrist strap connected to a verified ground point
  • Work on a dissipative ESD mat, not bare metal, wood or plastic
  • Keep components sealed in ESD bags until needed
  • Test wrist straps & mats regularly

Why Genuine & Accredited Sourcing Is Critical

Genuine and properly handled components arrive with their electrical characteristics unbroken. At Princeps every product we source comes from verified, authorised sources with correct storage, appropriate packaging and documented traceability. This is essential as ESD damage which has happened in a supply chain won't appear on a datasheet and it may not show on your inspection bench either. However it can show up in the field.

Looking for a trusted supply chain partner that can source, qualify and supply trusted electronic components? Get in touch with our expert team to find out how we can support your operations.