VDRH14V420BSE

Series:	VDRH
Part Status:	Active
Lead Free Status / RoHS Status:	--
Maximum AC Volts:	420V
Maximum DC Volts:	560V
Varistor Voltage (Min):	612V
Varistor Voltage (Typ):	680V
Varistor Voltage (Max):	748V
Current - Surge:	6kA
Energy:	225J
Number of Circuits:	1
Capacitance @ Frequency:	250pF @ 1kHz
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Through Hole
Package / Case:	Disc 16.5mm

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

TVS - Varistors, MOVs

Varistors, also known as MOVs (metal oxide varistors), are important components of TVS (transient voltage suppression) devices. They’re used for safely absorbing and dissipating voltages that exceed normal the working range of the target electrical components. The VDRH14V420BSE is an example of a varistor specifically designed for surge protection applications.

VDRH14V420BSE Varistor

The VDRH14V420BSE is an 14V NPN high surge disc varistor with a nominal clamping voltage of 420V. It is made up of three parts: a Zinc Oxide pellet, a perforated steel base, and terminal leads. The zinc oxide is a voltage-dependent semiconductor that is essentially two metal electrodes (one positive and one negative) bonded together. When voltage is applied to this combination, the electrons in the zinc oxide will move in response, creating a variable resistor. This variable resistor is what makes the MOV responsive to transient voltages—it will absorb them before they reach the vulnerable components downstream.

Working Principle

The VDRH14V420BSE works on the principle of energy dissipation. When it is exposed to a voltage that exceeds its clamping voltage, it will absorb this energy and turn it into heat. This will cause an increase in the resistance of the zinc oxide pellet and the increase in resistance will limit the current that is flowing through the MOV. This will prevent the voltage from rising above its rated value and damaging the components downstream.

Applications

The VDRH14V420BSE has a wide variety of applications, which include circuit protection for consumer electronics, automotive electronics, and industrial control systems. These MOVs are typically used to protect against electrical surges, such as those caused by nearby lightning strikes. They can also be used for low-speed fault protection applications. Specifically, they can be used to protect against momentary power outages and power spikes.

Conclusion

The VDRH14V420BSE is an important component in the field of TVS and surge protection. It is an ideal choice for protecting vulnerable components from transient voltages and electrical surges, thanks to its energy-absorbing properties. By controlling the current flow and limiting the voltage to its rated value, the VDRH14V420BSE ensures the safe and reliable operation of all connected components.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description