VCAS120630D650DP Circuit Protection

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TVS – Varistors, MOVs are generally surge protective components which create a voltage protection zone between two stages of a circuit. VCAS120630D650DP is a one type of such components.

VCAS120630D650DP is a type of varistor and contained the needed component for protection from transient voltage conditions. It is used to protect semiconductor components in the application such as high power automotive electronics, consumer electronics, personal computers, industrial electronics, telecom system level designs, and other sensitive circuits.

VCAS120630D650DP is designed with low capacitance and low leakage current which make it suitable in protection of data line when they are subjected to transients such as electrostatic discharge (ESD). It’s designed with proprietary NTC technology to provide enhanced ESD protection levels.

VCAS120630D650DP has a working voltage of 12V and a maximum operating temperature of 125°C. The component features high breakdown voltage of 650V and its steady state maximum leakage current is 1uA, which provides effective control over surges. It has low capacitance of 6pF that helps protect signal integrity up to 6GHz. It is also available in variant package options with a total power dissipation of 120 mW.

The working principle of VCAS120630D650DP is quite simple. It consists of two electrodes, an electrically conducting core and two springs connected to the core that are loaded with a pre-determined electrical resistance. When the voltage across the varistor is above the threshold voltage, the varistor will be in forward biased condition. This will cause a current to flow through the device. This current will heat up the varistor and increase its resistance so that the voltage across it will drop.

Once the voltage across the varistor is below the threshold voltage, it will be in reverse biased condition. This will cause the varistor to dissipate the excess energy and reduce the risk of over voltage. The varistor will then return to its original resistance value.

In summary, VCAS120630D650DP is a surge protective component that is suitable for use in high power automotive electronics, consumer electronics, individual computers, industrial electronics, telecom system level designs as well as other sensitive circuits. Its working principle is such that it can quickly dissipate excess energy when the voltage across it is higher than the pre-determined threshold voltage to reduce the risk of over voltage.

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