TVS Diode Types
1. By polarity
Unidirectional TVS: Protects only in one direction, used in DC circuits
Bidirectional TVS: Protects in both directions, used in AC, signal, and high-frequency circuits
2. By packaging
Surface mount type (SMB, SMC, SMA, DO-214AA, etc.)
Through-hole type (DO-41, DO-15, etc.)
3. By power
Low power: 200W, 400W, 600W (signal interface, I/O port)
Medium power: 1.5kW, 3kW (power interface, ordinary interface)
High power: 5kW, 15kW, 30kW+ (strong surge scenarios)
4. By process and structure
Silicon-based avalanche TVS: General, low cost
Zener TVS: Low voltage, precise voltage regulation
ESD protection array: Multi-channel high-speed signal protection
5. By application scenarios
Signal-level TVS: Low-speed, high-speed signals, USB, HDMI
Power-level TVS: DC-DC, adapter, charger, vehicle power supply