SUNBOW Quality Control Sharing – Magnetic Core -40℃~145℃ High And Low Temperature Cycling Test

As a core component of electronic equipment, the stability of magnetic cores directly determines operational efficiency and service life. Whether in frigid outdoor environments or high-temperature enclosed equipment interiors, magnetic cores must withstand extreme temperature challenges. Only by enduring rigorous temperature testing can they form a reliable core safeguard for stable equipment operation.

Why High-Low Temperature Testing Is a Must for Magnetic Core Quality

As key parts responsible for energy conversion and signal transmission in electronic devices, magnetic cores are highly susceptible to temperature changes.

Low temperatures may cause material embrittlement and reduced magnetic permeability, undermining signal stability. High temperatures can lead to magnetic performance attenuation, structural deformation, and even stress cracking, resulting in direct equipment failure.

Especially for high-end applications such as industrial control, automotive electronics and outdoor energy storage, devices frequently experience drastic temperature fluctuations and harsh climatic conditions, placing stricter requirements on the temperature resistance of magnetic cores.

Therefore, all qualified magnetic core products must pass stringent high and low temperature limit tests before mass delivery and customer application.

 

 

Rigorous Testing Procedures to Fully Consolidate Quality Assurance

To ensure magnetic cores maintain stable and reliable performance in various extreme temperature environments, we have built a professional high-low temperature laboratory and formulated standardized testing procedures. Every batch of products undergoes full-process, multi-dimensional temperature resistance tests to eliminate potential hidden risks in every detail.

During the test, real extreme working conditions are simulated. Magnetic core samples are placed in a high-low temperature cycling chamber to withstand repeated alternating impacts from low to high temperatures. The test covers extreme cold at -40℃ to high-temperature aging at 145℃. In each cycle, the temperature change rate and constant temperature duration are strictly controlled. This comprehensively verifies the magnetic properties, mechanical strength and structural integrity of magnetic cores at different temperature stages.

 

 

SUNBOW magnetic cores: High-low temperature test range: -40℃ ~ 145℃

Every compliance result represents our persistent commitment to quality.

After countless rounds of repeated high and low temperature cycling, our magnetic cores deliver outstanding performance in all tests.

At low temperatures, permeability remains stable with no embrittlement or cracking.

At high temperatures, excellent thermal stability is maintained, and power loss meets industry standards.

Under drastic temperature changes, the structure stays intact with no performance fluctuation, successfully passing all rigorous assessments.

We firmly believe that quality is never a slogan, but reflected in every strict test and every meticulous detail control.

High-low temperature testing is not only an inspection of magnetic core performance, but also a concrete demonstration of our responsibility to customers and consistent pursuit of quality.

 

 

In-chamber shooting of amorphous /nanocrystalline cores in high-low temperature test

In the future, SUNBOW will continue to optimize testing standards and upgrade testing equipment. With stricter standards and professional technologies, we polish every magnetic core carefully. All products can withstand extreme temperature challenges and provide stable, reliable core support for various electronic devices.

We work hand in hand with customers for high-quality development through reliable quality and professional strength.

✨ SUNBOW,Your Best Partner in Magnetic Materials

✨ YOUR BEST PARTNER OF MAGNETIC MATERIALS