SMBG48A-E3/5B

A TVS diode, also known as a transient voltage suppressor, is a type of semiconductor diode which, in addition to its conventional function as a rectifier, acts as a surge protector in order to protect electronic components from potential damage from overvoltage transients. The SMBG48A-E3/5B is an example of such a diode. This device is designed specifically for medium-power applications, and is suitable for lines up to 48 VAC and 5A DC/20 A surge current.

The device consists of two elements. The first is a silicon chip which acts as a Zener diode, providing a breakdown voltage of 12.8 V to 24.0 V, which depends on the part and the temperature. This provides protection against overvoltage transients, while allowing normal voltage to pass through the diode without disruption. The second element is a thermal-protection circuit that will prevent the temperature of the diode from becoming too high during large surges of current. This prevents damage to the device and any surrounding components.

In operation, the SMBG48A-E3/5B acts as a voltage regulator, clamping any voltage which is over the breakdown voltage of the diode. This prevents the device or any surrounding components from being damaged, while still allowing for a normal operating voltage. The thermal-protection circuit will kick in during instances of high current flow, limiting the amount of current that can pass through the diode in order to prevent the temperature of the device from becoming too high.

The SMBG48A-E3/5B is ideal for application in equipment which needs to be protected against overvoltage transients, such as HVAC equipment, lighting fixtures, and power supplies. It is also suitable for low-power applications like consumer electronics and telecommunications equipment. The device is available in 20 and 40A versions, allowing for greater current capacity when necessary. Furthermore, it is compatible with a wide range of voltage levels, providing protection for virtually any application.

The SMBG48A-E3/5B is a low power-consumption TVS diode which is designed for optimal performance in medium-power applications. It provides reliable protection against overvoltage transients, and its thermal-protection circuit ensures that the device does not become damaged in instances of large currents, ensuring reliable protection for any application in which it is used.