SCHURTER Introduces DKIH-4 Series Current-Compensated Chokes Featuring Nanocrystalline Ring Core

Press Release Summary:

The DKIH-4 Series Current-Compensated Chokes are designed for three phase applications with neutral line from 10 A to 40 A. The units are rated to 500 VAC or 760 VAC and can be operated in -40°C to +100°C temperature range. They are offered in open design with THT mount configuration. The chokes are suitable for use in frequency converter, charge stations and UPS systems.

Original Press Release:

DKIH-4 High Current Choke

Santa Rosa, California, December 12, 2018 – SCHURTER expands its successful range of PCB mount current-compensated chokes with a series for 4- wire high-current applications. The series is available for three phase applications with neutral line at rated currents from 10 A to 40 A. Due to the open design, the chokes are particularly compact and lightweight. 

The power system portion of an electronic equipment is increasingly configured on a printed circuit board using discrete components. Dense integration of these components to achieve a compact design, increases thermal problems due to the resulting high currents on the PCB. EMC interference can affect adjacent modules due to the lack of spatial separation. Therefore, a compact filter on the PCB with discrete components is often the best solution. A current-compensated choke with capacitors is the most efficient method of suppressing EMC interference and the DKIH-4, with its nanocrystalline ring core, provides much greater inductance in a smaller footprint over conventional ferrite core chokes. 

The new DKIH-4 series is suitable for three phase applications with neutral line from 10 A up to 40 A. Lightweight and compact, the THT mount common-mode chokes are designed according IEC 60938 and rated 500 VAC or 760 VAC, making them suitable for almost any applications. Temperature range is -40 °C to +100 °C. In addition to the standard versions, customer-specific pin configurations or variants can be created on request. 

Pricing for the DKIH-4 starts at about $20.00 in quantities of 500 pieces. The datasheet link can be found at Applications notes, white papers and spice library for DKIH can be found at For sales and product information, contact Cora Umlauf at (800) 848-2600 or by email at

Suzanne Bowser 
Marketing Manager 

Santa Rosa CA 
707 636 3003 

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