High / Low Temperature Soak Testing

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MSASPL can support high and low temperature soak testing in which a product is held at a defined environmental temperature for an agreed dwell period. Soak testing is useful for storage conditioning, endurance studies, cold/hot startup checks and functional evaluation after sustained temperature exposure.

What is temperature soak testing?

Temperature soak testing conditions the DUT at a specified high or low temperature for a defined time. Unlike cycling, the main objective is sustained exposure at one condition rather than repeated movement between temperature extremes.

Why temperature soak testing matters

Some failures need time to develop. Sustained hot or cold exposure can reveal drift, material changes, slow thermal stabilization effects, battery/power limitations and recovery problems that may not appear during shorter transient tests.

Typical observations during a soak test

Startup after sustained hot or cold conditioning
Output drift or regulation changes over time
Sensor or display stability
Power-supply and battery behaviour
Material or enclosure changes
Communication stability
Recovery after returning to ambient temperature

Suitable products and applications

PCB assemblies and embedded products
Power supplies and converters
Industrial controllers and sensors
IoT devices
EV modules and electrical assemblies
Medical and consumer electronics

How MSASPL can structure the evaluation

Define the soak temperature, duration, DUT state and required preconditioning.
Bring the chamber/DUT to the target condition according to the test plan.
Hold the DUT for the agreed dwell period.
Perform operational or measurement checks during/after soak as required.
Complete the defined recovery and post-test inspection/function checks.

Standards and test-plan reference

High- and low-temperature soak evaluations may use the general concepts of IEC 60068-2-2 (dry heat) and IEC 60068-2-1 (cold) when applicable, but “soak testing” is often a customer/product-specification term. The required temperature, dwell and operating state must come from the relevant requirement.

Frequently Asked Questions

How is soak testing different from thermal cycling?

Soak testing holds the DUT at one defined temperature for a sustained period. Thermal cycling repeatedly changes the DUT between two or more temperature levels.

Can a soak test be used for storage evaluation?

Yes. The DUT can be conditioned in a non-operating state to simulate or evaluate specified storage exposure, followed by recovery and functional checks.

Can the product be operated during the soak?

Yes, when the customer requirement and setup allow it. Operational soak can help reveal drift, shutdown, startup or long-duration stability issues.

How is the dwell time selected?

The dwell time should follow the product standard, customer specification or defined engineering objective and should account for the required conditioning/stabilization criteria.

Should hot and cold soak be separate website pages?

No. Dry heat testing raises the surrounding environmental temperature. Temperature rise testing focuses on how much the DUT or its components heat up while operating relative to ambient conditions.

Should hot and cold soak be separate website pages?

A single “Temperature Soak Testing” page can cover both high and low temperature soak while using separate subsections for each. This is usually cleaner for SEO and site navigation.

EMC, EMI and environmental testing support for reliable, certification-ready electronic products.

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Sunday : Closed

Contact

+91 70584 88896

pranav@msaspl.com

Shop No. 1 & 2, Shivranjan Tower, Above Bhujbal Dairy, Someshwar Wadi, Pashan, Pune 411008

MSASPL provides standards-aligned testing, diagnostics and engineering support. Final certification, statutory approval or accredited compliance certification must be obtained from applicable accredited laboratories or certification bodies.