DESIGN CENTERS: CONSUMER

    Combined ESD and EMI Protection for Audio Equipment

    10/08/2019
    Excellent ESD protection capability according to IEC61000-4-2, level 4

    TDK Corporation has expanded its lineup of chip varistors with the new AVRF101U6R8KT242 for audio equipment, which offers both ESD and EMI protection. This product is intended for audio equipment that uses wireless communications in the 2.4 GHz band. Thanks to optimization of its capacitance of 6.8 pF, the multilayer component features high attenuation at this frequency and is able to effectively suppress the generated TDMA noise and thus improve receiver sensitivity. It offers excellent ESD protection according to IEC61000-4-2, Level 4 and has a maximum permissible circuit voltage of 28 V DC, making it suitable for high power class-D amplifiers. Key applications include smartphones, speakers and other wireless devices that operate in the 2.4-GHz band using wireless LAN and Bluetooth, for example.

    Moving forward, TDK will continue to expand the product lineup in terms of chip sizes, bandwidth support range, and other specifications, in order to support a wide range of applications.


    Glossary

    • TDMA noise: Unpleasant audible noise generated by speakers when high frequency communication signals intrude into a microphone line
    • IEC61000-4-2: International Electrotechnical Commission's immunity standard on ESD

    Main applications

    • ESD and EMI protection of audio equipment such as smartphones, speakers and other wireless devices that operate in the 2.4-GHz band using wireless LAN and Bluetooth

    Main features and benefits

    • Combined ESD and EMI protection
    • Excellent ESD protection capability to IEC61000-4-2, level 4
    • High permissible circuit voltage of 28 V DC

    For more information, visit www.tdk.com.

    Related

    Power Systems Design

    146 Charles Street
    Annapolis, Maryland 21401 USA

    Power Systems Design

    Power Systems Design is a leading global media platform serving the power electronics design engineering community. It delivers in-depth technical content, industry news, and product insights to engineers and decision-makers developing advanced power systems and technologies.

    Published 12× per year across North America and Europe, Power Systems Design is distributed through online and fully digital editions, complemented by eNewsletters, webinars, and multimedia content. The platform covers key areas including power conversion, semiconductors, renewable energy, automotive electrification, AI power systems, and industrial applications—supporting innovation across the global electronics industry.