VA1812K801R020

Series:	Automotive, AEC-Q200, VA
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Maximum AC Volts:	20V
Maximum DC Volts:	26V
Varistor Voltage (Min):	29.7V
Varistor Voltage (Typ):	33V
Varistor Voltage (Max):	36.3V
Current - Surge:	800A
Energy:	3.0J
Number of Circuits:	1
Mounting Type:	Surface Mount
Package / Case:	1812 (4532 Metric)

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Introduction

VA1812K801R020 is a high-performance surge suppressor mainly designed for voltage transient suppression. This is mainly designed to protect electric power systems from surge, which is mainly caused by lightning strikes, high-voltage switching transients and other transient events. The product remarkably provides excellent protection for power system equipment in various applications.

Application field of VA1812K801R020

The uses of VA1812K801R020 are related to a wide variety of applications, ranging from telecommunication equipment to automotive and medical electronic systems. Its application mainly comes in floodlight, surge protective device, UPS, special lights, lightning arrester, and lightning protection zone. In many telecommunication systems, VA1812K801R020 is used as an overvoltage protection device in order to prevent sudden overvoltage and overcurrent conditions. In addition, it is widely used in automotive applications, such as in-vehicle power supply systems, and component protection systems.In medical equipment, VA1812K801R020 is used to provide surge protection on patient monitoring systems, medical diagnostic imaging systems, and medical instrumentation electro-mechanical systems.

Working Principle of VA1812K801R020

VA1812K801R020 is a voltage clamp type surge protective device (SPD), which works in a very unique way. When external voltage transient is applied to the device, it dissipates the pulsed energy through its internal components, thus providing the required protection.Basically, the VA1812K801R020 consists of two main components; a surge absorber and a protection resistor. The surge absorber consists of a MOV (Metal Oxide Varistor) and an RCD (Reverse Conducting Diode). The MOV is a foam inserted disc that is made of zinc oxide particles that act as a short circuit during an overvoltage causing the device to dissipate the excess energy.The protection resistor limits the voltage and the current to the protected equipment. It is important to choose the right protection resistor which has enough resistance to prevent high surge currents while still allowing enough current to the protected circuit.

Conclusion

VA1812K801R020 is an ideal choice for providing protection from voltage transient surge occurrence. It has a wide range of applications, such as lighting protection, special lights, floodlight, surge protective device, UPS and lightning arrester. Furthermore, its working principle is based on two main components; MOV and protection resistor. This device provides excellent protection from overvoltage and overcurrent conditions with utmost efficiency.

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