AWR1843AOPEVM: Through hole of PCB

Filling the through holes with resin helps protect the PCB from environmental factors such as moisture and dust. Resin helps reinforce the through holes, making them less susceptible to mechanical stress and damage.  By filling the through holes with resin, the PCB can achieve better insulation properties, reducing the risk of short circuits or electrical interference between traces. The resin filling can provide an additional layer of insulation, which can help reduce the risk of ESD damage to the components and traces on the PCB. You can know more about ESD protection from this article: www.nextpcb.com/.../detailed-esd-in-pcb-design