SM5S28-E3/2D

TVS (Transient Voltage Suppressor) diodes have become an increasingly popular choice for protection against damage caused by electrostatic discharge, power surges and other overvoltage situations. SM5S28-E3/2D, which is an unidirectional SMB/DO-214AA device, is an example among the many such diodes.

The SM5S28-E3/2D contains silicon avalanche diodes molded in a plastic body with a stud cathode. The device\'s cathode is connected to the power source and its anode is connected to the protected circuit. Its avalanche breakdown voltage is greater than 28.0V for unidirectional models. It is designed to protect circuits with power supply above 28V and it can handle the continuous rated power when there is power applied continuously.

SM5S28-E3/2D is widely used in applications such as automotive, communication systems, medical equipment, consumer electronics, home appliances and power supplies. It can protect circuits from over-voltage spikes up to 28V and can also be used in motor, battery and solar-cell driver applications. It is rated for power up to 500W, depending on the application. It also has an operating temperature range of -40 to 125 °C.

SM5S28-E3/2D has a working principle based on avalanche breakdown. It works by emitting electron-hole pairs when the electric field within the device exceeds the breakdown voltage. The emitted electrons and holes are attracted by the opposite electrode and move in opposite directions, producing a large current.

The current is limited by the current-limiting resistor, so that it does not increase too quickly. The avalanche breakdown voltage is primarily dependent on the device\'s size and construction, as well as the type of silicon used. The larger or thicker the device, the higher the breakdown voltage.

The SM5S28-E3/2D also has a low leakage current, which indicates its high reverse breakdown voltage. Moreover, its clamping voltage is quite low, which makes it suitable for use in sensitive circuits. Moreover, it also has a fast response, making it suitable for use in applications that require fast response.

SM5S28-E3/2D is a widely used TVS diode and is suitable for use in many different applications. It provides protection against overvoltage and power surges, and its fast response time and low leakage current make it suitable for use in sensitive circuits. It is available in various package sizes and has an operating temperature range of -40 to 125 °C.