Infineon BAT68 Schottky Diode: Key Features and Application Circuits

The Infineon BAT68 is a high-performance Schottky barrier diode, renowned for its exceptional switching speed and low forward voltage drop. As a surface-mount device, it is widely used in high-frequency applications where efficiency and rapid response are critical. This article explores the key characteristics of the BAT68 and illustrates several common application circuits.

Key Features

The BAT68 stands out due to its ultra-low forward voltage (typically around 0.32V at 0.1mA), which minimizes power loss and improves efficiency in low-voltage circuits. Its very fast switching speed makes it ideal for high-frequency rectification, RF detection, and signal demodulation. Additionally, the diode offers low reverse leakage current and is housed in a compact SOD-323 package, suitable for space-constrained PCB designs. With a maximum reverse voltage of 30V and a continuous forward current of 100mA, it balances performance and reliability for a broad range of electronic applications.

Application Circuits

1. RF Detector: In radio frequency circuits, the BAT68 is often used as a demodulator or envelope detector due to its low capacitance and fast response. It efficiently converts AC RF signals to DC output, enabling signal strength measurement or audio demodulation in communication devices.

2. Voltage Clamping: The diode’s low forward voltage makes it effective in clamp circuits to protect sensitive components from voltage spikes. For instance, it can be used to limit overshoot in high-speed data lines or power supply rails.

3. ORing Diode: In power redundancy systems, the BAT68 can serve as an ORing diode to isolate multiple power sources. Its low voltage drop ensures minimal power dissipation, enhancing overall system efficiency.

4. Sample-and-Hold Circuits: The fast switching characteristic allows the BAT68 to be used in sampling circuits, where it quickly captures and holds analog signal values with high precision.

ICGOODFIND: The Infineon BAT68 Schottky diode is a versatile component optimized for high-speed, low-power applications. Its combination of low forward voltage, rapid switching, and compact form factor makes it indispensable in modern electronics, from RF systems to power management.

Keywords: Schottky Diode, RF Detection, Low Forward Voltage, Fast Switching, Voltage Clamping