BAT30AWFILM Discrete Semiconductor Products

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Diodes - Rectifiers - Arrays

Rectifiers are important electrical components that are often used in power supplies to convert alternating current (AC) to direct current. Diodes are an essential component of rectifier circuits, and rectifier arrays offer ready-made combinations of rectifier diodes to simplify the design of rectifier circuits.

A BAT30AWFILM is an epitaxial planar type high-speed rectifier diode array, developed by STMicroelectronics. The forward voltage drop (Vf) for the device is 800mV, and the reverse voltage breakdown voltage is 80V. Each package contains two common cathode diodes in series.

The device can be used in a variety of applications, such as direct rectification of DC motor and motor driver circuits, and high-speed rectification in LED driver power supplies. It is also suitable for use in low-voltage switch mode power supplies, such as those used in computers and other digital devices. The device is also suitable for use in automotive systems, particularly in high-current applications.

Working Principle

The BAT30AWFILM is a rectifier diode array that works by allowing an electric current to flow in one direction, and blocking it from flowing in the opposite direction. To do this, the diode array is constructed using two common cathode diodes, with each diode facing the opposite direction. This allows for current to flow in the direction of the arrow, but prevents it from flowing in the opposite direction. This is known as the “rectification” process.

Each of the two diodes in the BAT30AWFILM is made of a PN junction, which is a type of diode. It is formed by sandwiching a thin layer of very lightly doped P-type semiconductor between two thicker layers of very heavily doped N-type semiconductor. This creates a “barrier” between the layers of semiconductors, which prevents current from flowing in the opposite direction.

When a positive voltage is applied to the P-type side of the diode, electrons in the N-type side are attracted to the positive voltage. As they move toward the positive voltage, they create a hole in the N-type side, allowing current to flow across the PN junction. If the positive voltage is removed, the electrons in the N-type side will return to their original positions, and the barrier will be re-created, preventing current from flowing in the opposite direction. This is how the BAT30AWFILM diode array works in a rectifier circuit.

Conclusion

The BAT30AWFILM is an epitaxial planar type high-speed rectifier diode array, developed by STMicroelectronics. Its low forward voltage drop (Vf) makes it an ideal device for low voltage switch mode power supplies, in addition to its suitability for direct rectification and high-speed rectification in various types of applications. The device works by allowing electric current to flow in one direction, while blocking it from flowing in the opposite direction, thanks to PN junctions in each diode.

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