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TDK Launches SurfIND, SMD Common-mode Chokes for Rated Currents of Up to 36 A At High Temperatures - TDK Corporation launches the EPCOS SurfIND series, a new range of current-compensated ring core double chokes for high currents and surface mounting (ordering code: B82725S2*A/B) - TDK.com
TDK Launches SurfIND, SMD Common-mode Chokes for Rated Currents of Up to 36 A At High Temperatures

 

PRZOOM - /newswire/ - Tokyo, Japan, 2025/01/23 - TDK Corporation launches the EPCOS SurfIND series, a new range of current-compensated ring core double chokes for high currents and surface mounting (ordering code: B82725S2*A/B) - TDK.com. TYO: 6762; TSE: 6762

   
 
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With SurfIND, customers who prefer reflow soldering (e.g. sandwich packages in telecom equipment, industrial drives, etc.) but need high-current common-mode chokes (usually large and heavy) can now get an SMD solution. These components can filter common-mode noise for rated currents from 24 A to 36 A at a temperature of +70 °C. With additional cooling, even higher currents can be achieved. This is easy to implement as the top side can serve as a direct interface for a heat sink.

For applications with a voltage of up to 250 V (AC), the nominal inductance ranges from 120 µH to 820 µH across seven variants. With stray inductance of up to 1% of the nominal inductance, these chokes also dampen differential-mode noise. All components meet IEC/EN 60938-2 standards and share a compact footprint of 40 x 38 mm (L x W), with heights of 20.7 mm for A types and 22.3 mm for B types. Their typical resistance ranges from 0.78 mΩ to 2.21 mΩ. Rated inductance drops by less than 10% at rated current with DC magnetic bias at +20 °C.

SurfIND chokes are mounted on a plastic baseplate, with a ferrite core coated in epoxy to insulate it from the windings; both materials are UL 94 V0 approved. The special design of the connection wiring eliminates the need for adhesives while self-leading SMD leads ensure easy reflow soldering to PCBs.

Features & Applications

Main applications

• Suppression of common-mode interferences;
• Switch mode power conversion applications;
• Frequency-variable drives.

Main features and benefits

• High rated currents at high temperature;
• Low profile with defined height dimension;
• Self-leaded SMD terminals suitable for reflow soldering;
• Ferrite core with epoxy coating and plastic base plate (UL 94 V-0);
• Approx. 0.6 to 1% stray inductance for differential-mode noise suppression.

About TDK Corporation

TDK Corporation (tdk.com) is a world leader in electronic solutions for the smart society based in Tokyo, Japan. Built on a foundation of material sciences mastery, TDK welcomes societal transformation by resolutely remaining at the forefront of technological evolution and deliberately “Attracting Tomorrow.” It was established in 1935 to commercialize ferrite, a key material in electronic and magnetic products. TDK‘s comprehensive, innovation-driven portfolio features passive components such as ceramic, aluminum electrolytic and film capacitors, as well as magnetics, high-frequency, and piezo and protection devices. The product spectrum also includes sensors and sensor systems such as temperature and pressure, magnetic, and MEMS sensors. In addition, TDK provides power supplies and energy devices, magnetic heads and more. These products are marketed under the product brands TDK, EPCOS, InvenSense, Micronas, Tronics and TDK-Lambda. TDK focuses on demanding markets in automotive, industrial and consumer electronics, and information and communication technology. The company has a network of design and manufacturing locations and sales offices in Asia, Europe, and in North and South America. In fiscal 2024, TDK posted total sales of USD 14.6 billion and employed about 101.000 people worldwide.

 
 
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TDK Launches SurfIND, SMD Common-mode Chokes for Rated Currents of Up to 36 A At High Temperatures

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TDK EPCOS SurfIND Series |
Contact: Press Office - TDK.com 
+813 6778 1055 tdk.pr[.]tdk.com
 
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