Damp Heat Test as per IEC 60068 or IEC 61215

Humidity works slowly, which is exactly what makes it dangerous. Moisture doesn't cause a dramatic failure on day one — it corrodes contacts and breaks down insulation quietly, over weeks and months, until something finally gives.

This test runs under IEC 60068 or IEC 61215, depending on the product category, and checks whether a component resists slow degradation when exposed to sustained high humidity and elevated temperature together.

The product sits inside a humidity chamber holding both conditions at once, often for many hours or several days straight. Afterward, engineers look for corrosion, swelling, or any drop in electrical performance that wasn't there before.

Coastal regions and tropical climates put constant moisture pressure on equipment, and poorly ventilated storage doesn't help. This kind of testing confirms a product can genuinely survive that environment for its full service life, instead of degrading quietly and failing without warning.