1. ESD electrostatic diode (ESD)
2. transient suppression diode (TVS)
3. ceramic gas discharge tube (GDT)
4. semiconductor discharge tube (TSS)
5. glass discharge tube (SPG)
6. varistor (MOV)
7. patch varistor (MLV)
8. self recovery fuse (PPTC)
9. fused fuse
10. RS485 communication chip
11. RS232 communication chip
12. CAN communication chip
13. power protection module
14. signal protection module Lightning protection RJ45 network connector
15. high-speed noise filter
16. magnetic bead
17. high-voltage rectifier diode
18. small signal Schottky diode
19. small signal switch diode
20. voltage regulator diode
21. MOS transistor
22. bipolar transistor
23. power management chip
24. power isolation module
25. signal isolation module
26. etc