BZT55B47 L1G

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

Application Field and Working Principle of BZT55B47 L1G Diode

Diodes, Zener for single configuration, such as the BZT55B47 L1G, are a type of semiconductor device which falls under a larger family of devices used for passing electric current in one direction and preventing the flow of current in the opposite direction. Their capability makes them useful components of electricity related technologies and projects. BZT55B47 L1G is such a device, used across a wide range of applications, where its working principle is described below.

Design of BZT55B47 L1G Diode

BZT55B47 L1G is a short can diode that includes a Zener diode in a single type package, with a maximum Zener voltage of 5.6V and maximum Zener current of 4mA. It’s designed for surface-mount application, with a package size of 0.8 x 0.8mm, and with a height between the board and its contact of 0.2mm. The parasitic inductance of BZT55B47 L1G is quite low, being many times smaller than that of a wire-bonded diode. The diode’s maximum junction-to-ambient thermal resistance is only 60°C/W.

Applications of BZT55B47 L1G Diode

The Zener diode configuration of BZT55B47 L1G makes it suitable for the protection of circuits from over-voltage. It can be used as an input clamp in boost converters and in other high frequency circuits, where its EMI (electro-magnetic interference)-resistant feature is useful. This feature prevents its current from spiking during power up, protecting the converters and sensitive points of the circuits. In addition, BZT55B47 L1G’s short-can diode configuration means that it usually doesn\'t require heatsinking, which makes it great for use in portable and small electronic devices.

Working Principle of BZT55B47 L1G Diode

The working of BZT55B47 L1G is regulated by the Zener diode and its gate electron structure. This structure creates an ideal situation for the diode in which its breakdown voltage, also referred to as its Zener voltage, is held at a pre-defined point. In this state, electrons flow directly from the cathode part of the diode to the anode. As the applied voltage increases above the breakdown voltage, in a region known as the ‘Zener’ region, a reversely biased breakdown, or Zener breakdown occurs. This causes the diode to act as a voltage regulator, allowing current to "flow through" it in the reverse direction, while maintaining the voltage drop across it at the Zener voltage.

As it’s a short can diode, the BZT55B47 L1G’s current-handling capability is quite low, defined at 4mA. This current-handling limitation mainly comes from the tiny package size, as the package size makes it difficult for the current to dissipate heat generated from the diode. Despite this limitation, the diode’s current and voltage capability are ideal for most applications, providing sufficient protection for circuits from over-voltage.

Conclusion

The BZT55B47 L1G diode is a useful component to a range of electricity-related technologies and projects. Its Zener and short can configuration makes it ideal for the protection of circuits from over-voltage and also makes it EMI-resistant. As it has an efficient thermal management capability, this diode can be used without heatsinking. Despite its current-handling limitation, the diode’s current and voltage capabilities are sufficient for many applications.

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