15KPA170A-B Circuit Protection

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TVS diodes play an important role in the protection of electrical systems against damage from transient voltage or current spikes. They protect sensitive electronic equipment from damage caused by lightning, electrostatic discharge and other sources of transient voltage. TVS diodes are typically placed between the power source and the protected load. They provide a low capacitance path to ground for transient currents, thereby limiting the voltage spike to a safe level.

The 15KPA170A-B is a TVS diode specifically designed to protect automotive electronic systems from transients caused by power cycling, electrostatic discharge, and other forms of electrical noise. The device is rated to clamp transients up to 70V, and can handle peak current ratings up to 5A. Unlike traditional diode-based transient protection solutions, this device is specifically designed to protect automotive electronics from fast transients due to power cycling. It is designed for automotive systems such as powertrains, infotainment, and hybrids.

The 15KPA170A-B consists of two cells in series, each capable of providing overvoltage protection levels up to 70V. Each cell contains its own gate element, series diode, and valve element. In normal operation, the gate element of the 15KPA170A-B will be biased so that the series diode conductive state is blocked. This limits the gate current and prevents the device from responding to normal system operation. When a transient voltage occurs, the gate element will become forward biased as the voltage across it exceeds the breakdown voltage. This will trigger the conduction characteristics of the device, allowing current to flow through it.

The valve element is designed to provide a low-capacitance path to ground for the transient current, thereby limiting the peak voltage to the breakdown voltage of the device. The low capacitance of the device also reduces power dissipation at high operation frequencies. Combined with the Series Diode, the device is able to provide enhanced protection against transient voltages over and above what traditional TVS diodes can provide.

The 15KPA170A-B is well suited for automotive applications due to its high peak power and clamping voltage levels, its low capacitance, and its low on-state resistance. It is capable of withstanding large transients and reducing EMI interference in automotive systems. The device is designed for single fault operation, and is capable of providing 3 to 6x peak current protection values when compared to standard silicon rise time TVS diodes.

In summary, the 15KPA170A-B is a unique type of TVS diode designed for automotive electronic systems. It provides an enhanced level of protection against transients caused by power cycling, electrostatic discharge, and other forms of electrical noise. The device can withstand large transients and reduce EMI interference in automotive systems. It is capable of providing 3 to 6x peak current protection values when compared to standard silicon rise time TVS diodes.

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