The relentless march of technology advancements demands more from our electronic components than ever before. We need devices that are more powerful, more efficient, and, most critically, smaller. This trend is driving our engineers to seek innovative solutions that can pack high performance into a compact footprint; a challenge that requires a fundamental rethink of the materials and design principles we use.

The Core Innovation: Advanced Materials at Play

Nanocrystalline Cores: Small Size, Big Impact

At the heart of this innovation lies the use of nanocrystalline materials in magnetic components. These materials offer a suite of performance-enhancing properties essential for modern power conversion applications that must support ever higher switching speeds. Key features include:

• High thermal resilience: Significantly higher Curie temperature compared to conventional ferrite materials, allowing components to maintain magnetic stability in high-temperature environments such as in industrial systems and advanced power electronics.
• High permeability: This allows for better inductance in a smaller footprint, enabling more compact designs without compromising functionality.
• Reduced core losses: Lower energy losses translate into improved efficiency and less heat generation—critical to meet high-performance system demands.

High-Performance Plastics: Insulation that Enables Innovation

Complementing the magnetic core is the use of high-performance plastics, such as those rated for Class F temperatures (155 °C). These materials bring:

• Exceptional insulation properties, with a Comparative Tracking Index (CTI) of 600, thereby boosting electrical isolation robustness.
• Reduced clearance and creepage distances, allowing for tighter component layouts and further miniaturization.

Together, these materials form the foundation for a new class of components that are not only smaller but also more capable.

The Result: Compact Design, Uncompromised Performance

The synergy between nanocrystalline cores and high-CTI insulation materials has unlocked a new level of design potential. The result? Compact components that deliver exceptional performance. Key benefits enable:

• More space for additional features or functionality.
• Lighter systems contribute to overall efficiency while meeting sustainability goals.
• Greater design flexibility for engineers working within tight spatial constraints.
• Improved power density that makes more powerful systems in smaller packages possible.

A prime example of this innovation is the development of a 64 A Through-Hole Technology (THT) Common Mode Choke, mountable directly onto the PCB. This breakthrough made by Bourns Magnetics engineers eliminates the need for bulky external busbars or complex thermal management systems—streamlining design, reducing system weight and cost, and maintaining high performance.

Why This Matters: Future-Proofing Technology

As systems become more complex and power-dense, miniaturization innovation in passive components becomes even more critical. Advanced designs like this open new doors for compact, high-efficiency electronics across a wide range of industries.

They also reflect a larger commitment that challenges electronic component developers to rethink what’s possible by leveraging cutting-edge materials and intelligent design. These innovations don’t just meet today’s challenges; they have the ability to set a new standard for what tomorrow’s electronics can achieve.

At Bourns, pushing the boundaries of component performance is more than an initiative—it’s part of our engineering DNA.