SMBJ5340B/TR13

The SMBJ5340B/TR13 is a silicon planar power Zener diode manufactured with high temperature MAXIMUM Rated VZ of 20V. It is specified for use as a shunt regulator to provide a highly stabilized reference voltage at the output. The devices are designed to provide voltage regulation up to +50°C with low noise and high reliability features.

Designers and engineers integrate SMBJ5340B/TR13 diodes in a broad array of applications, including in critical-performance industrial, automotive and aerospace systems. The device is suitable for operation up to 4 A continuous forward current, with peak continuous reverse and surge current of 10 A.

SMBJ5340B/TR13 offers a wide range of operational and environmental benefits to the user, such as superior reverse leakage current, superior forward voltage drop and superior high-temperature stability. Also, the device is cold-resistant and can be used in applications where temperatures drop below 0°C.

The working principle of the SMBJ5340B/TR13 is relatively simple. It is based on the principle of PN-junction. A PN junction is formed by joining two different types of semiconductor materials, and this junction conducts current only in one direction. The voltage at the PN junction is kept at the junction\'s breakdown voltage, which is referred to as the Zener voltage. In the SMBJ5340B/TR13, the Zener voltage is around 20V.

When a reverse bias voltage, greater than the Zener voltage, is applied to the diode, a reverse current starts flowing from the anode to the cathode. The current increases exponentially with the applied voltage. This current is known as reverse saturation current. When the voltage at the PN-junction exceeds the breakdown voltage of the diode, it will start conducting in the reverse direction and the current will become constant, which is known as the Zener current. This is how the Zener diode works.

The primary application of the SMBJ5340B/TR13 is as a voltage regulator, where it is used to regulate the voltage at the output of a power supply. For example, in an automotive system, the Zener diode is used as a clamping device to protect against overvoltage conditions. It can also be used to protect circuitry from voltage surges and spikes. Other applications include clock signal and data communication line protection, as well as circuit protection in industrial and laboratory equipment.

In conclusion, the SMBJ5340B/TR13 is a versatile and powerful power Zener diode that can be used in a wide variety of applications. It is designed to provide reliable and stable voltage regulation up to +50°C, with low noise and high performance. Its wide range of operational characteristics makes it well suited for use in industrial, automotive and aerospace systems, as well as for general circuit protection and signal line protection.