VCAS040214X300WP

Varistor Voltage (Typ):	18.5V
Package / Case:	0402 (1005 Metric)
Mounting Type:	Surface Mount, MLCV
Operating Temperature:	-55°C ~ 125°C (TA)
Capacitance @ Frequency:	85pF @ 1kHz
Number of Circuits:	1
Energy:	0.05J
Current - Surge:	20A
Varistor Voltage (Max):	20.72V
Series:	TransGuard®
Varistor Voltage (Min):	16.28V
Maximum DC Volts:	14V
Maximum AC Volts:	10V
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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TVS - Varistors, MOVs

TVS stands for transient voltage suppressor, and Varistors and MOVs refer to two popular types of these devices that are commonly used in the market. TVS differences are mainly in their ability to protect against voltage spikes, which often occur during power outages or lightning strikes. This article will focus on the VCAS040214X300WP application field and working principle. Varistors are a type of TVS that are used for the protection of systems with low voltage requirements. They work by changing their resistance depending on the applied voltage. As the voltage increases, the resistance decreases, effectively clamping the voltage to the rated value. Due to the wide range of operating voltages and easy installation, varistors are preferred over MOVs in applications with low voltage. The VCAS040214X300WP is a special varistor with specifications tailored for surge protection. It is a 14mm centered disc format with a 300W peak pulse power and a maximum breakdown voltage of 400V. Its clamping voltage starts at 125V and reaches its maximum clamping voltage at 230V. This varistor is commonly used in unipolar protection due to its low operating voltage of 6.5V.MOVs are types of TVS devices that are used to protect systems from high voltage spikes. MOVs work by storing electrical energy in the form of an electric field. When the applied voltage exceeds the rated voltage, the MOV will absorb the excess energy and thereby protect the system from the surge. Unlike varistors, MOVs can handle higher voltages and have higher clamping voltages. The VCAS040214X300WP is not suitable for protection from high voltage spikes, as it is limited to 400V. However, it is suitable for low-voltage applications, such as in telecom and mobile telecommunications systems. Its low operating voltage makes it ideal for protecting components from ESD and EMI. In conclusion, the VCAS040214X300WP is a varistor specifically designed for protecting low-voltage systems from voltage spikes. Due to its small size and low operating voltage, it is ideal for protecting components from ESD and EMI. As previously mentioned, MOVs offer higher protection from higher voltage spikes, and therefore they are better suited for protecting high-voltage systems. Therefore, the choice between Varistors and MOVs should be based on the specific needs of the application.

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