V420LC40BP

Varistor Voltage (Typ):	665V
Package / Case:	Disc 20mm
Mounting Type:	Through Hole
Operating Temperature:	-55°C ~ 85°C (TA)
Capacitance @ Frequency:	600pF @ 1MHz
Number of Circuits:	1
Energy:	160J
Current - Surge:	6.5kA
Varistor Voltage (Max):	720V
Series:	LC
Varistor Voltage (Min):	610V
Maximum DC Volts:	560V
Maximum AC Volts:	420V
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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The V420LC40BP is a Varistor, otherwise known as a Voltage Dependent Resistor (VDR). It helps to protect circuits from voltage spikes or large voltage drops. It works by allowing a controlled amount of current to flow through it, depending on the voltage at which it is set. This current is then diverted to the ground, reducing the chance of short circuiting or damaging other components, thus protecting the circuit.

The functionality of V420LC40BP is similar to that of a Metal Oxide Varistor (MOV). Both components help to protect circuits from voltage induced damage, however, the VDR is much more sensitive and responds to a smaller range of voltages. Additionally, the VDR is able to absorb much more energy than an MOV, allowing for more protection. The V420LC40BP also responds much faster to voltage changes, so it is ideal for applications with an ever changing power supply.

The V420LC40BP is primarily used for consumer electronics as it has a low clamping voltage and can handle up to 400V of power without any problems. It is also very popular in automotive applications, such as cameras and sensors, as it features low leakage current which makes it suitable for long term operation. The V420LC40BP is rugged and reliable and designed to handle high surge currents of up to 600A.

The V420LC40BP is made up of a metal oxide layer which acts as the variable resistor element and a molded plastic case. The metal oxide layer consists of magnetic, non-magnetic, and oxide materials, all of which are crucial for its operation. The molded plastic case provides mechanical support and insulation from environmental conditions. The V420LC40BP also has two leads connected to the metal oxide layer which allow the current to flow through it.

The operation of the V420LC40BP is relatively simple. When the voltage across its terminals exceed the device’s breakdown voltage, the metal-oxide layer starts conducting and a low resistance path is created. This allows the current to flow to ground, thus protecting the circuit. The main advantage of the V420LC40BP is that it can handle a wide range of voltages and maintains a low leakage current.

Overall, the V420LC40BP is an ideal component for a wide range of applications. It is a reliable and affordable way to protect circuits from over-voltage problems and is especially well suited for consumer electronics and automotive applications. Its high surge current ratings and rapid response make it the perfect solution for high power applications and those with ever changing power sources.

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