Also known as: Anti-Static Foam, Conductive Foam, Electrostatic Discharge Foam
ESD foam is packaging foam treated or compounded to safely dissipate static charge, protecting electronic components from electrostatic discharge damage. It is colour-coded — pink for anti-static (dissipative) and black for conductive — and is essential for PCBs, sensors and semiconductor assemblies.
Ordinary plastic foam generates static when it rubs against a product. For electronic assemblies, a discharge of even a few hundred volts — well below what a person can feel — can degrade or destroy a semiconductor junction, sometimes as a latent failure that only appears weeks later in the field.
ESD packaging foams fall into two classes. Anti-static (dissipative) foam, usually pink, prevents charge build-up and lets any charge bleed away slowly; it is the standard choice for general electronics packing. Conductive foam, usually black and carbon-loaded, has much lower resistance and actively shields components; it is used for exposed pins and high-sensitivity devices.
A widely used detail: conductive black foam is what integrated circuit pins are pressed into, because it holds all pins at the same potential and prevents a damaging voltage difference across the device.
Some anti-static treatments are topical and lose effectiveness over time or in dry conditions. For long storage or export, permanently compounded anti-static grades are the safer specification.
ESD Foam at a glance
| Anti-static (pink) | Surface resistivity 10⁹–10¹¹ ohms/sq |
|---|---|
| Conductive (black) | Surface resistivity 10⁴–10⁶ ohms/sq |
| Base materials | EPE, PU, EVA, XLPE available in ESD grades |
| Treatment | Topical (time-limited) or permanently compounded |
| Typical uses | PCBs, ICs, sensors, connectors, drives, control panels |
Common questions
What is the difference between pink and black ESD foam?
Pink foam is anti-static/dissipative — it stops charge building up and is used for general electronics packing. Black foam is conductive, with far lower resistivity, and is used to hold component pins at equal potential and shield highly sensitive devices.
Does anti-static foam expire?
Topically treated anti-static foam can lose effectiveness over months, especially in dry air. Permanently compounded grades retain their properties for the life of the foam and should be specified for long storage or export.
Need Anti-Static EPE Foam for your product?
We manufacture anti-static epe foam at our Rajkot unit and dispatch across India. Send the product, size or weight and monthly quantity and we specify and quote within one working day.
Or read the full specification: Anti-Static EPE Foam