1.5SMC18AHR7G

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Transient Voltage Suppression (TVSs) are a special type of semi-conductor diode used to protect electrical systems from high voltages. The 1.5SMC18AHR7G TVS diode is one of these devices, intended specifically for the protection of vulnerable components from ESD and EFT. This article will discuss the application field and working principle of this device.

Application Field

The 1.5SMC18AHR7G is a vehicle-grade TVS diode intended for use in electronic systems for automotive, computer and industrial applications. It is particularly well suited for applications where reliable protection against ESD and EFT surges is required. It has a working voltage of 17-27 V and is capable of withstanding up to 18A of surge current.

This diode has the capability to absorb high level of surge current, making it suitable for high current applications. It can also be used for electrostatic discharge and EFT protection for printed circuit boards, integrated circuits, and coaxial cables. In addition, it is capable of accepting an input voltage up to 120 V, meaning it is suitable for systems in the higher voltage range.

Working Principle

The 1.5SMC18AHR7G uses a unique bidirectional, unidirectional, or single line architecture based on the avalanche breakdown of reverse-biased PN junctions. Its working principle relies on the fact that when the Reverse Standoff Voltage (RSV) is exceeded, an avalanche breakdown of the junction occurs. This produces a low impedance path which allows a large surge current to pass through. The current then flows in the reverse direction until the voltage across the diode is reduced to the RSV.

The device provides protection against both ESD and EFT, using slightly different mechanisms. For ESD protection, the device clamps the voltage to a safe level when a voltage surge is present. For EFT protection, the diode provides an inductive delay for EFT pulses, so that they do not reach the circuit in time to cause any damage.

The 1.5SMC18AHR7G is designed to offer reliable protection to vulnerable components from ESD and EFT surges. Thanks to its wide range of working voltages, its ability to withstand high levels of surge current, and its low capacitance enables it to be used for a wide range of applications.

The specific data is subject to PDF, and the above content is for reference