Infineon BAS140WE6327HTSA1: Datasheet, Application Circuit, and SOT-323 Package Overview

The Infineon BAS140WE6327HTSA1 is a high-performance Schottky barrier diode renowned for its ultra-low forward voltage and minimal switching losses. As a critical component in modern electronics, it is engineered for applications requiring high efficiency and fast switching speeds. This article provides a detailed overview of its datasheet specifications, a typical application circuit, and the advantages of its compact SOT-323 package.

A thorough examination of the datasheet reveals the diode's key electrical characteristics. The BAS140WE6327HTSA1 features a low typical forward voltage (Vf) of just 315 mV at 0.1 mA, which is pivotal for enhancing energy efficiency, especially in low-voltage circuits. Its extremely low reverse leakage current ensures minimal power loss during the off-state. The device is rated for a repetitive reverse voltage (VRRM) of 40 V and an average forward current (IF) of 200 mA. Furthermore, its fast switching capability makes it an ideal choice for high-frequency applications, preventing performance degradation in circuits like RF detectors and signal mixers.

A common application circuit for the BAS140WE6327HTSA1 is in a half-wave rectifier configuration for low-power AC-to-DC conversion. In this setup, the diode is placed in series with the load. The AC input is applied, and during the positive half-cycle, the diode conducts with its low Vf, allowing the positive portion of the waveform to pass to the output. A smoothing capacitor is often placed in parallel with the load to reduce ripple voltage. This circuit is exceptionally effective in harvesting energy from high-frequency sources or in precision signal demodulation due to the diode's swift response and low loss.

The device is housed in the SOT-323 surface-mount package, a defining feature for space-constrained designs. This package is significantly smaller than the common SOT-23, offering a footprint of only 2.0 x 1.25 mm. Despite its miniature size, it provides robust mechanical stability and is compatible with standard automated PCB assembly processes. The package's design ensures excellent thermal performance, allowing for efficient heat dissipation during operation, which is crucial for maintaining reliability and longevity in dense circuit boards.

ICGOOODFIND: The Infineon BAS140WE6327HTSA1 stands out as a superior Schottky diode, combining exceptional electrical performance—ultra-low Vf and fast switching—with the immense space-saving benefits of the SOT-323 package. It is an optimal solution for designers aiming to maximize efficiency and minimize the form factor in modern electronic devices.

Keywords: Schottky Barrier Diode, Ultra-Low Forward Voltage, Fast Switching, SOT-323 Package, High-Frequency Application.