TV15C510J-G Circuit Protection

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TVS diodes are commonly used for overvoltage and surge protection of electronic circuits in order to prevent them from voltage transients and excessive current. The TVS diode is a two-terminal semiconductor device that is able to provide fast switching from a conducting to a non-conducting or blocking state. It is also known as a Zener diode, avalanche diode, or breakdown diode. The TV15C510J-G is one such widely used example.

Application field

TV15C510J-G have been used in a variety of applications, such as automotive, industrial, consumer, and medical applications. The TV15C510J-G diode is a 600W unidirectional low capacitance transient voltage suppressor developed to protect sensitive microelectronic components from severe overvoltage transients induced by lightning or load dump. Although this diode can be used in various applications, it is commonly used in board level protection for telecom, server, and automotive applications.

Working Principle

This diode works similarly to an ordinary diode, operating in either a forward-biased or a reverse-biased state. When in a forward-biased state, it operates almost identically to a Zener diode, allowing a low current flow in the forward direction while preventing reverse current flow. The reverse-biased state is what makes this diode distinct, as it provides a rapid breakdown of the electric field that is applied to it. This breakdown occurs when a specific high voltage point is reached, which then quickly reduces the voltage across the diode and limits the transient voltage.

The TV15C510J-G also utilizes a specialized parallel plates structure, which consists of a square metal plate with two small plate structures placed parallel to it. The two small plates act as capacitors and can be connected in a variety of ways to reduce the effect of EMI (Electromagnetic Interference).

Compared to other transient voltage suppressor, this diode offers several advantages. It is relatively compact in size, has high surge handling capability, and features a low clamping voltage with very low capacitance. It has a tight tolerance on clamping voltage and has a low on-state resistance of 0.2Ω. This makes it ideal for applications such as lightning and general overvoltage protection.

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