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.
Damp Heat Test as per IEC 60068 or IEC 61215
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.
Aldo Compliance's process:
Setting humidity and temperature levels precisely to match IEC 60068 or IEC 61215
Running extended exposure cycles that simulate months or years of real humid conditions
Inspecting closely for corrosion or moisture damage, internal and external
Verifying electrical and functional performance still meets rated spec after exposure
FAQs
mmonly need this test?
Solar panel components, outdoor electronics, and coastal-region equipment come up most often.
How is IEC 61215 different from IEC 60068 here?
IEC 61215 is specific to solar photovoltaic modules, while IEC 60068 applies more broadly.
Product Testing – Humidity Test
Moisture doesn't announce itself. A product can run perfectly fine for months and then start failing quietly — a corroded contact here, a shorted circuit there — long after it left the factory. A humidity test exists to catch that risk before it ever reaches a customer, by exposing a product to controlled moisture and humidity levels and watching exactly what happens.
What a Humidity Test Actually Checks
The test evaluates how materials, components, and finished products perform when exposed to sustained or cyclic humidity. That covers a few different failure paths at once: whether metal parts corrode, whether insulation resistance drops, whether moisture works its way into an enclosure that looked sealed, and whether the product still functions correctly once the exposure period ends.
Two approaches get used most often. Steady-state humidity testing, commonly run under IEC 60068-2-78, holds a product at a fixed high humidity and temperature for an extended period. Cyclic humidity testing, under IEC 60068-2-30, moves the product between humidity and temperature extremes repeatedly, closer to how conditions actually shift across a real day-night cycle. Which one applies depends on the product category and where it's headed for use.
Why Humidity Damage Is So Easy to Miss
Heat and impact failures are obvious. Something cracks, something stops working, and the cause is right there. Humidity damage is different. It builds up slowly through condensation, moisture absorption into materials, and gradual corrosion on exposed metal, and a product can look completely fine on the outside while its internal reliability has already started slipping.
This is exactly why a humidity chamber test matters more than a visual inspection ever could. Lab conditions compress months or years of real-world moisture exposure into a controlled test window, so the failure shows up on a report instead of in a customer's hands.
Where Humidity Testing Matters Most
- Products headed for coastal regions or tropical climates, where ambient humidity sits high for most of the year
- Outdoor electronics and enclosures exposed to rain, dew, or seasonal moisture
- Equipment stored for long periods in poorly ventilated warehouses before reaching a customer
- Defense and industrial equipment operating in variable field conditions
- Any product with exposed metal contacts, connectors, or PCB assemblies
What Gets Measured During Testing
- Insulation resistance – Checked before, during, and after exposure to confirm moisture hasn't compromised electrical isolation
- Visual inspection – Examining the product for corrosion, discoloration, swelling, or material degradation
- Functional performance – Powering the product on after exposure to confirm it still operates within its rated specifications
- Dimensional stability – Checking whether materials swelled, warped, or otherwise changed shape under sustained moisture
How Aldo Compliance Runs Humidity Testing
- Test method selection – Choosing between steady-state and cyclic humidity testing based on the product's intended environment and applicable standard.
- Chamber conditioning – Setting precise temperature and humidity levels inside a calibrated humidity chamber, matched to the required test profile.
- Extended exposure cycles – Running the product through the full test duration, whether that's continuous exposure or repeated cycling.
- Post-test evaluation – Inspecting for corrosion and moisture damage, then confirming functional performance meets the original specification.
FAQs
How long does a humidity test usually take?
It depends on the standard and product category. Steady-state tests can run continuously for several days, while cyclic tests repeat shorter cycles over a similar total duration.
Is humidity testing the same as damp heat testing?
They're closely related. Damp heat testing under IEC 60068 is essentially a specific form of humidity testing, combining elevated temperature with sustained humidity exposure.
Does every electronic product need humidity testing?
Not always, but it's strongly recommended for anything facing outdoor exposure, coastal deployment, or long-term storage in humid environments, even when it isn't a strict certification requirement.