High Temperature Testing for Electronic Products

As we all know, electronic products are ubiquitous in our daily lives and their application fields continue to expand. As a result, the environmental conditions they face are becoming increasingly complex and diverse. Therefore, conducting high and low temperature tests on electronic products is essential. JJR Laboratory in China is a third-party testing organization accredited by CNAS and CMA. Below is an introduction to high temperature testing for electronic products.

Purpose of Testing and Applicable Standards

Purpose of Testing

▶ To determine a product’s adaptability during storage, transportation, and usage under high-temperature environmental conditions.

▶ The severity of the test depends on both the temperature level and the duration of exposure.

Applicable Standards

▶ GB/T 2423.2 _Environmental Testing for Electric and Electronic Products – Part 2: Test Methods – Test B: High Temperature_

▶ IEC 60068-2-2 _Environmental Testing for Electric and Electronic Products – Part 2: Test Methods – Test B: High Temperature_

Test Conditions and Key Considerations

High Temperature Test Parameters

The technical parameters include: temperature, duration, and rate of temperature rise.

▶ Commonly used temperatures: 200℃, 175℃, 155℃, 125℃, 100℃, 85℃, 70℃, 55℃

▶ Common durations: 2h, 16h, 72h, 96h

Impact of High Temperature Stress on Products

▶ A commonly used rule when discussing product life is the “θ℃ rule.” For example, under the “10℃ rule,” a 10℃ increase in ambient temperature halves the product lifespan, and a 20℃ increase reduces lifespan to one-quarter. This illustrates how temperature influences product failure and aging.

▶ Effects of high temperature: aging, oxidation, chemical reactions, thermal diffusion, electromigration, metal migration, melting, vapor deformation, etc.

Precautions for Conducting High Temperature Tests

▶ The "10℃ rule" implies that high temperature testing is a common method used for component and system screening, aging, life, accelerated life, and evaluation testing, and plays a key role in failure analysis.

▶ Be mindful of the maximum temperature tolerance limits of the product or components.

▶ Ensure sample placement within the test chamber maintains at least 5 cm distance from the chamber walls to ensure uniform heating.

▶ After the test, allow the sample to stabilize either within the chamber or under standard room temperature and humidity conditions.

Report Handling Procedure

1. Business Inquiry

▶ The applicant provides product information, images, and testing requirements.

2. Engineering Quotation

▶ Engineers assess the provided materials, determine the appropriate test items, and offer a verbal quotation.

3. Payment

▶ Upon receipt of the sample, a written quotation is issued. The applicant arranges payment based on the written quote.

4. Documentation Submission

▶ Upon acceptance of the verbal quote, the sample and necessary documentation are submitted to our lab.

5. Sample Testing

▶ Testing is conducted in accordance with applicable standards or customer requirements.

6. Report Issuance

▶ Upon completion of testing, the laboratory issues a test report and closes the case.

About JJR Laboratory

JJR Laboratory is equipped with multiple high-temperature test chambers covering a range from room temperature up to 500℃. We provide high temperature testing services, IEC 60068-2-2 environmental adaptability tests, screening tests, and life tests for various electronic products, electromechanical equipment, automotive electronics, and communication devices.