VDRH20X510BSE

Series:	VDRH
Part Status:	Active
Lead Free Status / RoHS Status:	--
Maximum AC Volts:	510V
Maximum DC Volts:	670V
Varistor Voltage (Min):	738V
Varistor Voltage (Typ):	820V
Varistor Voltage (Max):	902V
Current - Surge:	10kA
Energy:	460J
Number of Circuits:	1
Capacitance @ Frequency:	400pF @ 1kHz
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Through Hole
Package / Case:	Disc 23mm

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TVS - Varistors, MOVs

Varistors, also known as voltage sensitive resistors (VSRs) or transient voltage surge suppressors (TVSS), are devices designed to limit voltage surges in a circuit. VDRH20X510BSE is a type of varistor. Varistors limit current flow in the circuit by providing a path for current in the event of a voltage spike, reducing the surge or "spike" and protecting the components in the circuit.Varistors are also known as metal oxide varistors (MOVs) due to the type of material typically used in their manufacture. Varistors are constructed of Negatively Temperature Coefficient (NTC) ceramics made from metal oxides. These ceramics are sandwiched between two electrodes and two metal plates. When a large enough voltage spike is present, the ceramic material breaks down and current is limited to the level specified by the manufacturer.The VDRH20X510BSE is an MOV specifically designed for use in high voltage applications. It has a rated breakdown voltage of 20V and a rated clamping voltage of 510V for a continuous operating temperature range of -55°C to +125°C. It can withstand surges up to 6500A and provides a 52μF capacitance rating. It is suitable for use in surface mount applications.The application field of the VDRH20X510BSE:The VDRH20X510BSE is ideal for protecting circuits from voltage spikes in equipment including computers, power supplies, and other electronics that may be used in the automotive, industrial, medical, aerospace, military, and consumer industries. It is a suitable option for applications with high voltage and high energy requirements such as motor control, power distribution, and high voltage switchgear.The working principles of the VDRH20X510BSE:The VDRH20X510BSE works by limiting the current in a circuit when a voltage spike occurs. It does this by providing a path for the current to flow through the ceramic material which then breaks down and limits the current to the level specified by the manufacturer.The ceramic dielectric material used in the VDRH20X510BSE is designed to withstand surges of up to 6500A. Additionally, the NTC characteristics of the ceramic result in a lower surge limit than a standard MOV with a positive temperature coefficient (PTC). The reduction in the pulse limit helps to protect the components in the circuit.The MOV also has a very low capacitance rating to allow for higher frequency operation at high voltages. This helps to reduce noise and help protect against damaging high frequency spikes.Overall, the VDRH20X510BSE is designed to work in a wide variety of applications and is a suitable option for high voltage applications with a high energy requirement due to its ability to regulate and limit the current. Additionally, its low capacitance rating makes it suitable for high frequency applications.

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