Industry applications
3.1 Bluetooth Speaker Control Board Electrostatic Surge Protection Solution
Bluetooth speakers often suffer from electrostatic discharge (ESD) issues due to frequent plug-in and removal, which can affect their usability in various ways such as failure to read USB cards, noisy audio playback, power cycling upon plugging in, battery malfunction, and static noise. To address these problems, it is necessary to design circuits that comply with national ESD and Surge Test standards for safety and reliability.
Leiditech recommends various interface protection devices to ensure safe and reliable operation, suitable for USB ports, TF card slots, audio/video interfaces, and DC power/battery ports. Detailed circuit diagrams can be found by visiting the protection solutions section for signal interfaces on our WeChat mini-program.
These solutions meet IEC 61000-4-2 standards at Level 4, capable of handling contact discharge up to 30 kV and air discharge up to 30 kV. For higher-level IEC 61000-4-5 Surge Test compliance, high-power SMC (Silicon Controlled Rectifier)
