Würth
Varistor (12 V DC) – Würth 820541406
Varistor (12 V DC) – Würth 820541406
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Product details
Würth Elektronik 820541406 is a radial leaded WE-VD disk varistor for transient voltage suppression.
Specifications
- Manufacturer part number: 820541406
- Maximum continuous operating voltage: 14 V AC RMS / 18 V DC
- Varistor voltage: 22 V ±10% at 1 mA
- Maximum energy absorption: 5.4 J, 10/1000 µs pulse
Questions about this product
How does a varistor help with a transient?
How does a varistor help with a transient?
A varistor becomes more conductive as the voltage rises, diverting transient current and limiting the voltage across it. Select its voltage, surge and energy ratings for the actual circuit.
Can a varistor be used more than once?
Can a varistor be used more than once?
A suitably rated varistor can handle repeated transients within its specified limits, but surges and sustained overvoltage can degrade or damage it. Follow the manufacturer’s ratings and protective recommendations.
Where should I connect a varistor?
Where should I connect a varistor?
Choose its position as part of the complete protection design, commonly across the conductors being protected. Mains-to-earth applications need particular attention to component suitability and the equipment’s safety requirements.
Can you help with larger quantities or product selection?
Can you help with larger quantities or product selection?
Yes. Contact us with the product, quantity and intended application. We can discuss suitability and prepare a quotation for your requirements.