Features:
1. The current capacity is extremely large: it can withstand surge currents of tens to hundreds of kiloamperes (kA) and has strong discharge capability.

2. Extremely low inter electrode capacitance: usually ≤ 2pF, with almost no interference to high-frequency and high-speed signals, suitable for communication line protection.

3. Extremely high insulation resistance: Under normal conditions, the insulation resistance is ≥ 1G Ω, and the leakage current can be ignored.

4. Response speed: The response time ranges from nanoseconds to microseconds (0.1~0.5 μ s), faster than varistors but slower than TVS tubes.

5. Breakdown voltage: The voltage range is wide (75V~several kV), but the breakdown voltage has a large dispersion (± 20%).

6. Small size and long lifespan: With a variety of packaging options (surface mount/direct insertion), it can withstand multiple surge impacts.

Applications：
1. Communication equipment: lightning protection for telephone lines, RJ45 Ethernet ports, RS485 buses, and fiber optic transceivers.

2. Power system: surge protection for AC/DC power input terminals, adapters, and charging stations.

3. Industrial control: signal/power interface protection for PLCs, sensors, and instruments.

4. Consumer electronics: interface lightning protection for set-top boxes, routers, and security cameras.