How Reliable Are Nanocrystalline Cores Under Temperature Extremes?

At JH Amorphous, we are committed to ensuring that our products perform reliably, even in the most demanding environments. Our latest high/low temperature environmental reliability test has once again proven the exceptional temperature stability of our nanocrystalline toroidal magnetic cores.

In this test, we subjected three of our nanocrystalline cores (LF-T322010-655R, LF-T402515-646R, LF-T311912-642R) to temperature shock tests at 0–5℃ and 80℃. The results were impressive, confirming the outstanding reliability of our cores under temperature extremes.

What Did We Test?

🔍 We conducted a full temperature cycle involving 25°C → Low Temperature → Recovery → High Temperature → Recovery. Throughout this process, the inductance variation stayed within approximately ±1%, showcasing the excellent magnetic performance stability of our cores across varying temperatures. (See the full data in the technical report.)

Why Does This Matter for Engineers?

• Exceptional Temperature Stability: The cores maintained excellent magnetic performance under both low and high temperatures, making them ideal for use in automotive electronics, power supply systems, and other high-reliability applications.

• Greater Safety Margins: The ability to perform reliably across a wide temperature range provides added safety margins for engineers designing mission-critical systems.

• Consistency Across Batches: With minimal inductance variation across batches, our cores deliver strong product consistency, ensuring low batch-to-batch variation — a crucial factor for ensuring stable EMC/EMI performance in your designs.

How Did We Conduct the Test?

Our rigorous testing methodology follows a step-by-step process to simulate real-world temperature cycles:

1. Room-temperature measurement → Exposed to 0–5°C for 1 hour → 30-minute recovery at room temperature → Re-measurement

2. Room-temperature measurement → Exposed to 80°C for 1 hour → 30-minute recovery at room temperature → Re-measurement

Both tests showed that all three cores demonstrated minimal inductance drift, confirming the superior temperature reliability of nanocrystalline materials.

Why Should Engineers Care About This?

Nanocrystalline cores are low-loss and high-permeability, making them ideal for energy-efficient and high-performance applications. However, their temperature reliability is a key factor that sets them apart in demanding environments.

In applications such as automotive systems, industrial equipment, and high-performance power electronics, our nanocrystalline cores deliver stable performance under temperature fluctuations. This makes them a reliable choice for engineers who require consistent, high-quality performance in their designs — even under extreme temperature conditions.

Conclusion:

Our nanocrystalline cores not only provide low-loss, high-permeability, and superior performance, but also excel in temperature stability. Whether exposed to low or high temperatures, these cores remain reliable and stable, ensuring the long-term performance of your electronic systems.

For engineers looking for magnetic material solutions that are high-temperature stable, low-temperature reliable, and batch-consistent, our nanocrystalline cores are an ideal solution. Contact us today to learn more about how we can help support your projects with high-performance, temperature-resilient materials.

Looking for Reliable Magnetic Materials for Your Next Project?

If you're designing high-performance electronics and need stable, temperature-resistant magnetic materials, we’re here to help! Reach out to us to discuss how our nanocrystalline cores can meet the demands of your most challenging designs.