High and Low Temperature Test as per IEC 62663
THigh and Low Temperature Test as per IEC 62663 middle.
Not every product gets to operate in a climate-controlled room. Some sit in storage through peak summer heat; others get deployed somewhere well below freezing. IEC 62663 exists to check whether a product stays safe and functional across that entire range, not just the comfortable middle.
The product goes into a temperature-controlled chamber and gets held at defined high and low extremes for set durations. Engineers then check whether it kept operating normally, and whether anything physically changed once it came back to room temperature.
The failure modes at each extreme are different. Heat causes components to expand or soften; cold makes materials brittle and connections loosen. A hot cold cycling test catches both, in a controlled setting, before either becomes a field failure.
Aldo Compliance's approach:
Setting calibrated thermal chambers to the exact high and low limits IEC 62663 requires
Holding the product at each extreme for the full specified duration
Testing functional operation both during and after exposure
Documenting temperature ranges tested and performance at each stage
Frequently Asked Questions
What temperature range does IEC 62663 typically cover?
It varies by product category, but generally spans both sub-zero cold and high heat relevant to real deployment.
Should this run alongside thermal shock testing?
Many manufacturers run both together, since each checks a different aspect of thermal reliability.