High Current Chokes mount on PCB.

Press Release Summary:

Available for single- and 3-phase applications with rated currents from 10–50 A, DKIH Series features open, lightweight design, suitable for suppressing EMI noise caused by power applications on PCB. Single-phase DKIH-1 Series offers voltage ratings of 300 Vac (IEC, UL), 250 Vac (CSA), and 425 Vdc, with inductance range of 0.30–0.90 mH. Three-phase DKIH-3 Series, rated to 600 Vac, offers inductance ratings from 0.08–1.10 mH. All common mode chokes operate from -40 to +100°C.

Original Press Release:

DKIH - High Current Choke

Common Mode Chokes for 1- and 3-Phase Applications mount on PCB

Santa Rosa, California, – SCHURTER expands its wide range of current compensated chokes with high current types for PCB mounting.

The new DKIH series are available for single and three phase applications with rated currents from 10 to 50 amperes. Due to its open design, the chokes are light weight and compact, ideally designed to suppress EMI noise caused by power applications on the PCB.

Like all other aspects of electronic design, the power portion is often built today using discrete components on printed circuit boards. With the trending integration of components, to achieve smaller and smaller form factors, thermal problems and high currents on the PCB can arise. It also becomes increasingly challenging to meet EMC requirements with a filter package due to the resulting space constraints; therefore a filter on PCB with discrete components is a good solution. Next, the capacitors and a common mode choke, with asymmetrical effective inductance, are very effective to dampen EMI noise.

The new DKIH-1 series is suitable for single phase AC or DC applications from 10 up to 50 amperes. Light weight and compact, the common mode chokes are easily placed on the PCB with through-hole technology (THT). They are designed and approved according IEC 60938, UL 1283 and CSA 22.2 no. 8.

The voltage rating is 300 VAC (IEC, UL), 250 VAC (CSA) and 425 VDC. Inductance ratings range from 0.30 to 0.90 mH.

The new DKIH-3 series is suitable for three phase AC applications from 10 up to 50 amperes. The common mode chokes are also designed according IEC 60938 and are rated 600 VAC, making them suitable for many applications. Inductance ratings range from 0.08 to 1.10 mH.

The DKIH-1 and -3 have a wide temperature range of -40 to +100°C. They are available with a standard pin out or customer specific pin out. Variations in the winding are also available on request. The DKIH product family is designed for use in applications such as frequency converters for photovoltaic or energy storage, charging stations for electric vehicles, UPS systems and switch mode power supplies.

Pricing starts at just $8.73 each per 100 pieces. Packaging is 20 pieces per box, except for the 10 and 12 A versions of the single phase product which are 40 pieces per box. Data sheet and additional information are available at: dkih.schurter.com. For sales and product information, contact Cora Umlauf at (800) 848-2600 or by email at info@schurterinc.com.


SCHURTER is a progressive innovator and manufacturer of Circuit Protection, Connectors, Switches, and EMC Products to the electronic and electrical industries worldwide. SCHURTER’s three divisions: Components, Input Systems and Electronic Manufacturing services are formed to provide customer specific products and services, which focus on clean and safe supply of power and making equipment easier to use. These core competencies bring a high degree of innovation to SCHURTER’s main markets IT / Telecom, Medical, Space and Renewable Energy.

SCHURTER meets its customers’ highest demands through certified quality, environmental and safety management systems including ISO 9001, ISO 14001, OHSAS 18001 and highly developed processes (Six Sigma method).

Excellent services are upheld through the consistent application of an all encompassing quality management system.

SCHURTER Inc., Santa Rosa, California is the exclusive North America sales and distribution office for the SCHURTER Group.


Brooke Philbin


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