Understanding Surface Resistance and Static Dissipation Rates
Surface resistance explained: the number that determines how well your ESD packaging protects.
What is surface resistance?
Surface resistance measures how easily electrical charge flows across a packaging surface. Lower resistance means charge flows (dissipates) faster. The measurement, in ohms, determines whether packaging is conductive, dissipative (anti-static), or insulative.
Quick answer
Anti-static packaging must have surface resistance of 10^9 to 10^12 ohms. This is the dissipative range: charge flows away slowly enough to prevent rapid discharge but fast enough to not accumulate. Below 10^9 ohms is conductive (too fast, can cause damage). Above 10^12 ohms is insulative (too slow, charge accumulates). The correct range protects components by dissipating charge safely and gradually.
The key ranges
Very fast charge flow. For specific high-protection applications.
Moderate charge flow. For controlled environments.
Slow charge flow. The standard for most packaging applications.
Charge does not flow. Not ESD-safe. Standard plastic falls here.
Testing: testing guide or how coatings work.
Dissipation rates
Dissipation rate is how quickly accumulated charge drains away. Anti-static packaging should dissipate charge to safe levels within 2 seconds (per BS EN 61340). Faster dissipation is better but must not be so fast as to create a discharge event. The 10^9-10^12 ohms range provides the correct balance.
Verified anti-static pouches
Correct surface resistance from ProcuraPack.
Browse anti-static bubble pouchesFrequently asked questions
10^9 to 10^12 ohms.
How easily charge flows across the packaging surface.
Below 10^5 ohms for most packaging applications.
Above 10^12 ohms. Standard plastic. Not ESD-safe.
Within 2 seconds per BS EN 61340.
Part of our guide
Product Guide: Anti-Static Bubble Pouches
Expert guides on ESD-safe bubble pouches for protecting sensitive electronic components.
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