1SMB28A TR13

Transient Voltage Suppressors (TVS) diodes, also known as “peak power diodes”, are semiconductor devices specifically designed to protect sensitive electronic circuits and components from transient voltages. The 1SMB28A TR13 is one type of TVS diode that is designed to protect electronic systems against transient voltage events in a specific application field. This article will explain the application field and working principle of the 1SMB28A TR13.

The 1SMB28A TR13 is capable of protecting electronics from a wide range of transient negative voltage events. It is designed to protect components operating in low voltage systems such as Alternating Current (AC) and Direct Current (DC) lines, communication and data networks, and computer peripherals. It can also be used in medical equipment to protect against high voltages generated during ESD events and lightning strikes.

The 1SMB28A TR13 provides protection by clamping voltage, which is the process of limiting the voltage across a sensitive component to a specified maximum value. It achieves this by using the avalanche breakdown of a heavily doped semiconductor region. When the magnitude of the voltage across the diode exceeds the intrinsic breakdown voltage, carriers are multiplied sufficiently to maintain a large current flow through the diode. This large current then produces a voltage drop across the diode that is equal to the breakdown voltage.

When the voltage across a protected component exceeds the diode’s breakdown voltage, the diode will turn on and rapidly reduce the voltage to a safe level. This is known as the clamping voltage, which is the maximum voltage across the protected component. Since the diode is designed to have a very low resistance when conducting, it can dissipate high levels of energy and reduce the voltage to a safe level in a matter of nanoseconds. This ensures that the sensitive electronic components are protected from damage from voltage spikes.

The 1SMB28A TR13 is designed to provide protection from negative voltage transients and is capable of withstanding voltages up to 28 V. It has a low capacitance of 2.5 pF and can handle pulse currents up to 400 A. It has an operating temperature range of -55°C to +125°C and is available in a DO-214AC (SMB) package. The 1SMB28A TR13 is RoHS compliant and is an excellent solution for protecting electronics from transient voltage events.

In summary, the 1SMB28A TR13 is a TVS diode specifically designed to provide protection for low voltage electronics from transient voltage events. It is able to rapidly clamp voltages up to 28 V and can handle pulse currents of up to 400 A. It is an ideal solution for protecting sensitive electronic systems from damage caused by voltage surges.