signal protection
22.2 NB-IoT Antenna Electrostatic Surge Protection Solution
Solution Advantages: Used for electrostatic surge protection of NB-IoT antenna interfaces with ultra-low capacitance to ensure signal integrity. According to the module voltage of NB-IoT, choose a 3.3V low capacitance diode ULC3311CDN or a 5V low capacitance ESD diode ULC0511CDN30, meeting IEC61000-4-2 (Level 4). If IEC61000-4-5 surge testing is required on the front-end, use GDT components such as SMD4532-090NF or 2R090-5S.
