ZOV20D471K, Metal-Oxide Varistor, 300VAC, 470V Varistor Voltage

The ZOV20D471K is a metal-oxide varistor (MOV) from Bourns, designed to protect electronic circuits from transient over-voltages such as lightning strikes and switching surges. It offers a maximum continuous operating voltage of 300 VAC and a varistor voltage of 470 V. The device can handle peak surge currents up to 6,500 A (8/20 µs waveform) and absorb energy up to 170 J (10/1000 µs waveform), making it suitable for high-energy applications. Its fast response time and low leakage current ensure reliable performance in protecting sensitive electronic components. The varistor operates effectively within a temperature range of -40°C to +85°C and features a compact 20 mm disc design, facilitating easy integration into various PCB layouts. ​

Key Features:

• High Surge Capability: Withstands peak currents up to 6,500 A (8/20 µs waveform).​
• Energy Absorption: Capable of absorbing up to 170 J of energy (10/1000 µs waveform).​
• Fast Response Time: Reacts to transient over-voltages within nanoseconds, providing effective protection.​
• Wide Operating Temperature Range: Functions reliably between -40°C and +85°C.​
• Low Leakage Current: Exhibits minimal leakage current under normal operating conditions.​
• Compact Design: Features a 20 mm disc diameter, suitable for various PCB layouts.​

Additional Specifications:

• Capacitance: 1600 pF
• Voltage Rating: AC Voltage Rating (Vrms): 300 V DC Voltage Rating (Vdc): 385 V Varistor Voltage (V1mA): 470 V