High-Performance Surface Mount Common Mode Choke Inductor

Engineered for modern electronics requiring reliable electromagnetic interference (EMI) suppression, this high-performance surface mount Inductor is a critical member of the Electronic Components family, delivering exceptional noise filtering in a compact form factor. Designed with dual-coil winding using UEW-φ0.035 wire arranged in a precise 1P×9TS configuration, it ensures balanced impedance characteristics across both signal lines, making it ideal for differential-mode signal integrity in high-speed data and power applications. The magnetic core is constructed from H42D material, a specialized ferrite formulation that maintains stable permeability and low core losses even under varying load conditions and temperature fluctuations.

With a self-resonant frequency of 100MHz, this Common Mode Choke effectively suppresses high-frequency noise commonly found in switching power supplies, USB interfaces, HDMI lines, and Ethernet communication circuits. Its impedance rating of 600Ω at the target frequency provides robust attenuation of unwanted common-mode signals without significantly affecting the desired differential signals. The component is housed in a standard SOP surface-mount package, enabling seamless integration into automated pick-and-place assembly processes and reducing overall board space requirements—making it one of the most versatile Inductors for EMI-sensitive designs.

Measuring just 2.08mm × 1.26mm × 0.88mm with a maximum installed height of 1.4mm, this ultra-thin inductor is perfect for slim consumer electronics such as smartphones, tablets, wearable devices, and compact IoT modules. The thickness tolerance of 1.2±0.20mm ensures consistent mechanical fit and solder joint reliability during reflow soldering. Operating reliably across an industrial temperature range of -40℃ to +85℃, it maintains performance stability in demanding environments including automotive infotainment systems, industrial control units, and outdoor networking equipment.

A resistance tolerance of ±20% is carefully calibrated to balance cost-efficiency with functional consistency, making this inductor suitable for mid-to-high-volume production runs where yield and repeatability are critical. Unlike traditional through-hole alternatives, its surface-mount design eliminates lead-related parasitic inductance and reduces EMI radiation from component leads. Design engineers often select this type of Common Mode Choke when addressing FCC or CE compliance challenges related to conducted and radiated emissions, leveraging its capabilities as a key EMI-filtering solution among passive Electronic Components.

Common design considerations include proper PCB layout to minimize loop area, avoiding placement near high-current traces that could induce crosstalk, and ensuring adequate thermal relief pads for solderability. Despite its small size, this inductor exhibits excellent saturation current handling and minimal DC bias degradation, supporting long-term operational reliability in power-over-data-line (PoDL) and DC-DC converter filtering applications. As one of the most efficient surface-mount Inductors available today, it continues to meet the evolving demands of compact, high-performance electronic systems.