Understanding EMC standards — which standard applies to me?

The jungle of standards is more organized than it looks: three levels, one clear order. Those who know it find the right standard faster.

Have your standards framework clarified

1. Basic standards

They describe the test methods themselves — how measurement is done, not which limit values apply. Examples: the IEC/EN 61000-4-x series for immunity (ESD, Burst, Surge — see ESD, Burst & Surge).

2. Generic standards

They set limit values per environment and apply when no matching product standard exists. The EN 61000-6-x series:

61000-6-1 — immunity, residential/commercial/light-industrial
61000-6-2 — immunity, industrial (stricter)
61000-6-3 — emissions, residential/commercial
61000-6-4 — emissions, industrial

Industrial immunity is stricter (more disturbances on site); the residential emission limit values are stricter than those for industry (proximity to broadcast reception).

3. Product and product-family standards

They take precedence: if a product standard exists (e.g. for automotive the CISPR 25 family, for household appliances CISPR 14), it applies instead of the generic standard.

The order in one sentence

Product standard before generic standard; the basic standard provides the test method behind it. These standards are the key to the presumption of conformity of the EMC Directive.

Frequently asked questions

How do I know which standard applies to my product?

First check whether a product or product-family standard exists — it takes precedence. If not, the matching generic standard (EN 61000-6-x) applies depending on the operating environment. We take on this standards identification as the first step of every EMC project.

What is the difference between IEC and EN?

IEC standards are international; once adopted as an EN (European Norm) and listed in the EU Official Journal, they trigger the presumption of conformity of the EMC Directive. In content they are usually identical (e.g. IEC 61000-4-2 = EN 61000-4-2).

Sources: IEC — Generic EMC Standards, EN 61000-6 overview. Always check specific applicability against the valid edition of the standard.