BAT46W-HE3-18

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Diodes - Rectifiers - Single

BAT46W-HE3-18 is a single diode rectifier made of Schottky silicon. It has a height of at most 2.8mm, making it small enough to be used in miniature applications, or where limited space or height is available. This diode has an operating temperature range of -65°C to 150°C, meaning that it can be used in a variety of applications – from cold weather to tropical temperature environments, depending on their specific operating conditions.

Properties:

• Forward Voltage - Standing for “forward voltage drop”, this is the voltage that must be applied across the diode before electrons can pass from the cathode (positive) to the anode (negative) side of the diode. The forward voltage rating of this diode is typically between 0.32V - 0.36V
• PIV Rating - This stands for “Peak Inverse Voltage”, and is the maximum voltage the diode can withstand across its terminals in the reverse bias state, before breakdown occurs.
• Reverse Leakage Current - This is the current flowing through the diode in the reverse state, which is usually very small. The reverse leakage current rating of the BAT46W-HE3-18 is 0.1 μA.
• Forward Current - This is the maximum current that the diode can handle in the forward bias state before it is damaged. The forward current rating of this diode is rated up to 1.8A.

Application Fields and Working Principle

The BAT46W-HE3-18 is a general-purpose single diode rectifier, which is mainly used in power supplies, battery chargers, lighting controls and low-voltage DC electronics. It is also ideal for use in any circuit which requires a current-limited, reverse-biased diode protection switch and can serve to replace standard signal diodes in many applications.

The working principle of a single diode rectifier is fairly simple and includes three main components: a cathode (negative terminal), an anode (positive terminal) and a PN junction. Once a DC voltage is applied to the anode and the cathode, current flows directly from the anode to the cathode, with electrons traveling in the opposite direction. This process is called forward-bias conduction. However, when an opposite voltage is applied to the terminals, the current is blocked, since one side will be positively charged and the other negatively charged, creating an electric field that prevents electrons from flowing. This is called reverse-bias conduction.

With the given forward voltage and PIV rating, the BAT46W-HE3-18 can be used in a wide variety of circuit design applications. Furthermore, its small size and efficient thermal resistance (1.0 K/W) make it suitable for use in space-constrained applications where power dissipation needs to be kept at a minimum.

Conclusion

The BAT46W-HE3-18 is a single diode rectifier which is suitable for use in a variety of applications due to its relatively low forward voltage drop and PIV rating, as well as its small size and efficient thermal resistance. It can be used in power supplies, chargers, lighting controls, low-voltage DC electronics and any circuit which requires a reverse-biased diode protection switch. Overall, this diode is a prime example of how a single diode rectifier works and its many uses.

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