Würth Elektronik WE-CMB Series Common Mode Choke - 3A

The Würth Elektronik WE-CMB Series Common Mode Choke is engineered for superior electromagnetic compatibility (EMC) performance, offering high-efficiency suppression of interference in electronic circuits. Its primary function is to attenuate common-mode noise—unwanted signals present on both power or signal lines—which is crucial for ensuring stable operation and compliance with regulatory standards in sensitive applications.

A core design achievement of the WE-CMB series is its exceptional ability to suppress asymmetric interferences even at low frequencies, where parasitic effects can be most problematic. This is made possible through a meticulously optimised core-to-winding ratio, which allows the choke to handle very high currents within a compact footprint while maintaining sufficient inductance for effective filtering. The series utilises a low-capacitance winding technique, providing broadband screening for a wide frequency range without compromising performance.

Constructed for reliability and efficiency, these chokes feature an adjusted wire gauge designed to minimise resistive heating during operation. This contributes to a stable performance across the extensive operating temperature range of -40°C to +125°C. The very compact design is a significant advantage, enabling the highest possible current ratings in small form factors, which is ideal for space-constrained modern electronics. While offering a robust off-the-shelf solution, Würth Elektronik also provides the option for custom designs to meet specific application requirements.

This component is a fundamental building block for cleaner power delivery and signal integrity, making it an essential choice for design engineers focused on performance and reliability.

Variant Details

• Size: 3A