VA100018D400RL

Varistor Voltage (Typ):	25.5V
Package / Case:	Axial
Mounting Type:	Through Hole
Operating Temperature:	-55°C ~ 125°C (TA)
Capacitance @ Frequency:	900pF @ 1kHz
Number of Circuits:	1
Energy:	0.40J
Current - Surge:	150A
Varistor Voltage (Max):	28.05V
Series:	TransGuard®
Varistor Voltage (Min):	22.95V
Maximum DC Volts:	18V
Maximum AC Volts:	13V
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction to VA100018D400RL Varistors

VA100018D400RL Varistors are a type of Transient Voltage Suppressors (TVS). They are often referred to by the more general name of Varistors, MOVs (Metal Oxide Varistors) or Silicon Avalanche Diodes (SADs). These components are used to limit or absorb transient voltages, sharply cut off or dissipate excessive current pulses, and provide protection for electronics from voltage forces. The main purpose of the VA100018D400RL Varistor is to protect circuit boards from being damaged by static electricity or other high voltage events.

Application Field of VA100018D400RL Varistors

VA100018D400RL Varistors have a wide range of applications. They are used to protect electronics from damage due to transient voltage events such as lightning strikes, ESD, overvoltage, undervoltage, and power surges. These components are widely used in power circuits, lighting systems, robotic systems, automotive electronics, telecom systems, telecommunications, consumer electronics, medical devices, and many types of industrial equipment.

Working Principle of VA100018D400RL Varistors

The VA100018D400RL Varistor is composed of a ceramic material doped with metal oxides such as zinc oxide, copper oxide, and silver oxide. This material has a unique property of exhibiting nonlinear resistance at different voltages. The varistor has a parabolic voltage-current curve, which means that when a certain voltage is applied across it, its resistance increases exponentially. This property enables it to create a high impedance barrier when a sudden over or under voltage occurs. The electricity is diverted through the varistor instead of through the delicate electronics in the circuit. The energy is then dissipated as heat.

Other Important Features of VA100018D400RL Varistors

VA100018D400RL Varistors are designed with several features that make them ideal for protecting circuits against transient voltage events. They have high current handling capability, fast response time, and low leakage current. They also provide wide operating temperature range, low voltage drop, and low clamping voltage levels. Additionally, they are surface mountable, non-polar, and have low capacitance.

Conclusion

VA100018D400RL Varistors are a type of Transient Voltage Suppressors (TVS) that are used to protect circuit boards from being damaged by static electricity or other high voltage events. The main purpose of the VA100018D400RL Varistor is to limit or absorb transient voltages, sharply cut off or dissipate excessive current pulses, and provide protection for electronics from voltage forces. They have a wide range of applications and are ideal for protecting circuits against transient voltage events.

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