VC1812K301R115

Series:	Automotive, AEC-Q200, VC
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Maximum AC Volts:	115V
Maximum DC Volts:	150V
Varistor Voltage (Min):	162V
Varistor Voltage (Typ):	180V
Varistor Voltage (Max):	198V
Current - Surge:	300A
Energy:	5.2J
Number of Circuits:	1
Mounting Type:	Surface Mount
Package / Case:	1812 (4532 Metric)

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Introduction

Varistors, known as Variably Resistive-Type Voltage Regulator (VRVR) or Variable Potentiostats, are a nonlinear component used to protect circuits from high voltage or transients. They are one of the most common components used to protect against transients in circuit protection applications. The Varistor, MOV (metal oxide varistor) and TVS (transient voltage surge suppressor) are very similar, but they are not the same. The VC1812K301R115 is a part of the TVS family working to protect electrical circuits from transients, high voltage, and overcurrent. It is commonly used in automotive, aviation, telecommunication, and industrial applications. This paper will discuss this device and its applications and working principles.

Applications

The VC1812K301R115 is a metal oxide varistor specifically designed for use in automotive and industrial applications. It features low capacitance, low maximum leakage, and bi-directional lightning protection in both AC and DC circuits. This device is ideal for use in over-voltage protection for low to moderate voltage signals, such as audio circuits, power supplies, data lines, and other sensitive circuits.The VC1812K301R115 can also be used to protect against high voltage surges in automotive applications, such as engine control systems and in-vehicle infotainment systems, as well as aircraft, naval, and telecommunication systems. As such, it is applicable to areas that require the prevention of high-power surges and lightning strikes. Additionally, the device is suitable for high-temperature operating applications with an operating temperature range of -40°C to 125°C.

Working Principle

The working principle of the VC1812K301R115 is to protect circuits from high voltage or transients by redirecting or dissipating the energy from the transient. It is a nonlinear component with two terminals, and when a transient is present, the voltage across the terminals will be higher than the normal operating voltage. When this happens, the MOV will act as a voltage-dependent resistor, causing current to be drawn from the transient and causing the voltage to drop. The current is then dissipated or the energy is redirected away from the circuit. The VC1812K301R115 is a bi-directional model, meaning it can protect against both AC and DC transients. This device is also able to clamp the voltage by channeling high voltages away from the circuit and redirecting it or dissipating it back into the system.

Conclusion

The VC1812K301R115 is a bi-directional Varistor specifically designed for use in automotive, aviation, telecommunication, and industrial applications. It is capable of protecting circuits from high voltage and overcurrent surges or transients and is suitable for high-temperature operating environments. The device works by redirecting or dissipating the energy from a transient in order to clamp the voltage and protect the circuit from excess current and voltage. The VC1812K301R115 is an invaluable component for circuit protection and is widely applicable in a variety of applications.

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