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TDK introduces new notch filters with built-in ESD protection

SemiMediaEdit
March 17, 2022

TDK Corporation recently announced the AVRF041A150MT242 and AVRF061D2R4ST532 notch filters with ESD protection.

The new notch filters are compliant with the IEC61000-4-2 Level 4 immunity standard. They are well suited to ensuring EMC requirements are met in the audio circuits of key applications - including smartphones, wireless earbuds (TWS), and smart speakers. Thanks to TDK's proprietary materials and advanced structural design, the new products implement industry-leading attenuation characteristics for specific frequency bands. They are highly effective at noise suppression and improved reception sensitivity in wireless communication. Moreover, the products can simultaneously provide countermeasures against both noise and ESD via one single chip, both reducing costs and using less board real estate.

The AVRF041A150MT242 features a small footprint of only 0.4 x 0.2 x 0.2 ㎜ and delivers ESD protection and noise suppression in the 2.4 ㎓ band. It has a maximum insertion loss of just -20㏈ at 2.4㎓, The AVRF061D2R4ST532, which is supplied in 0.6 x 0.3 x 0.3 ㎜ form factor offers ESD protection and noise suppression in the frequency band up to 5.3㎓. At that frequency, it has a -15㏈ insertion loss.

With accelerating 5G transition and advanced mutual coordination between connected equipment, the era of IoT is now here. In addition to the conventional demands for lower power consumption and increased functionality, electronic equipment is required to have higher quality design and exhibit ongoing operational reliability. By developing notch filter solutions with significantly smaller footprints and expanded frequency capabilities, TDK is able to address market expectations for more streamlined telecommunication devices, such as smartphones and TWS, while also expanding the frequency band in relation to the latest generation of Wi-Fi transmissions.

Volume production of these devices will begin in March 2022.

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AVRF041A150MT242 AVRF061D2R4ST532 electronic components news TDK
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