LC15 Circuit Protection

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TVS - diodes, also known as transient voltage suppressors, are specialty diodes that are used to protect other electrical or electronic components from voltage transients, which are brief, high-rate increases in voltage, that can cause destructive current spikes. Diodes rated for higher reverse breakdown voltage are more likely to be called surge suppressors than suppressor diodes. The LC15 is one such device, and it is a three-terminal, fast-acting, uni-directional voltage clamp device. It is designed to limit the peak voltage transient that occurs on electronic systems, and protect against both over-voltage and electro-static discharge events.

The working principle of the LC15 is based on a standard diode architecture, wherein a current flows from the anode to the cathode when the anode voltage is higher than the cathode voltage. However, the LC15 has an added feature — a clamping or “zener” voltage. The clamp voltage is set so that when a voltage transient exceeds the specified clamp voltage, the device switches on and provides a reverse current path. This limits the transient voltage to the clamp voltage, protecting the device or system from destruction due to the over-voltage.

The LC15 is available in a number of packages, such as, the LC15D series, the LC15DC series, the LC15F series, and the LC15FW series. It can handle peak pulses of up to 15A, with a clamp voltage of 15V. The LC15F, LC15DC, LC15FW series are designed specifically for applications where the current pulses are low, but the peak voltage or energy levels are high. These devices can handle peak pulses of up to 6A, 12A or 24A, with clamp voltages of 15V, 18V and 36V, respectively.

The LC15 is suitable for a variety of applications due to its high-clamping voltage, low reverse leakage current and fast response. It can be used in automotive systems such as headlights and taillights, as well as in industrial applications such as pulse power supplies. It can also be used to protect data lines, such as Ethernet and RS232/485 applications. Additionally, it is often used in consumer products as well, such as laptop computers, electro-mechanical tools and wireless products, for both over-voltage and electro-static discharge protection.

In summary, LC15 is a three-terminal, fast-acting, unidirectional voltage clamp device that is designed to limit the peak transient voltage that can occur on electronic systems. It is suitable for a variety of applications due to its high clamp voltage, low reverse leakage current, and fast response. It is commonly used in automotive, industrial, consumer, data line, and other applications, for over-voltage and electro-static discharge protection.

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