TDK expands the lineup of notch filters with built-in ESD protection function

     TDK has newly developed AVRF041A150MT242 and AVRF061D2R4ST532 notch filter with ESD protection function。The new notch filter complies with the level 4 immunity standard of IEC61000-4-2. These filters are ideal for ensuring that the audio circuits of key applications such as smartphones, wireless headphones (TWS) and smart speakers meet EMC requirements. Thanks to TDK's patented materials and advanced structural design, the new products have achieved industry-leading attenuation characteristics in specific frequency bands. The product is also very effective in suppressing noise and improving wireless communication reception sensitivity. In addition, the product can provide noise and ESD countermeasures simultaneously through a single chip, which not only reduces the cost, but also saves the space of the circuit board.

     AVRF041A150MT242 has a small size of only 0.4 x 0.2 x 0.2 mm, and provides ESD protection and 2.4 ㎓ band noise suppression. At 2.4 ㎓, the maximum insertion loss is only - 20 ㏈. AVRF061D2R4ST532 has an overall dimension of 0.6 x 0.3 x 0.3 mm, providing ESD protection and noise suppression of up to 5.3 ㎓ frequency band. At this frequency, the insertion loss is - 15 ㏈.

 
     With the acceleration of 5G transformation and advanced mutual coordination between interconnected devices, the era of the Internet of Things has come. In addition to the general requirements of reducing power consumption and increasing functionality, electronic equipment also needs to have a higher quality design and demonstrate continuous operational reliability. By developing a notch filter solution with significantly smaller size and expanded frequency functions, TDK can meet the market's expectations for more streamlined telecommunications equipment (such as smartphones and TWS), and also expand the frequency band related to the latest generation of Wi Fi transmission.