Bourns Launches New Automotive-Grade Common Mode Chokes

AEC-Q200 compliant and suitable for DC power line applications

The SRF7035A series is compact and thin to meet board space constraints and provide EMI suppression and noise filtering in high voltage/high current DC power supplies. 

November 19, 2021 - Bourns, a world-renowned leading manufacturer and supplier of electronic components, has launched the new SRF7035A common-mode choke series that meets AEC-Q200 automotive standards. Designed to support high voltages and currents in DC power line applications, this series has five impedance ratings, voltages up to 80 VDC, and currents up to 5 A, providing designers with additional flexibility and expanding the use of compact common-mode filters in power applications. Due to limited circuit board space, which has driven the minimization of component shape and volume, a compact surface-mount package design common-mode filter specifically for DC power lines is now available as an option. This series of products uses a surface-mount package that is not only rugged, compact and thin, but is also a direct replacement for solutions of the same level.

Bourns® SRF7035A共模扼流圈具备-40 °C至+125 °C的宽工作温度范围、拥有低辐射的坚固屏蔽结构、并採用降低噪声的特殊矩形铁氧体环磁芯以及用耐高温的H级漆包线材。这些特性使其成为汽车、消费电子、工业和其他电子市场的DC/DC转换器、开关模式电源和电源系统中DC电源的电磁干扰（EMI）抑制和噪声过滤的最佳选择。

Bourns全新共模扼流圈提供分段配置的绕组，可在宽带率范围内提供高共模阻抗，并在100兆赫（MHz）以上提供更高的差模阻抗，通过设备箝紧的U形端子满足各种机械应力且提供卓越的强度。保护性塑料屏蔽罩覆盖扼流圈的表面和电线清楚分隔 N1和N2绕组，允许500 VAC和3 mA的高压绝缘隔离持续1秒。Bourns® SRF7035A系列的额定电压为80 VDC，非常适合DC电压自12 V转变为24 V和48 V的下一代应用。

Bourns® SRF7035A Common Mode Choke Series is now available and all series are RoHS compliant* and halogen-free**.

*RoHS Directive 2015/863 of March 31, 2015 and Annexes.

**Bourns products meet the “halogen-free” requirement if (a) the bromine content is 900 ppm or less, (b) the chlorine content is 900 ppm or less, and (c) the sum of the bromine and chlorine content is 1500 ppm or less.