Infineon BAS21UE6327HTSA1 High-Speed Switching Diode: Datasheet, Applications, and SOT-23 Package Overview

The Infineon BAS21UE6327HTSA1 is a high-performance, high-speed switching diode designed for a wide range of general-purpose applications. As part of Infineon's robust portfolio of discrete semiconductors, this component is engineered for efficiency and reliability in compact electronic designs. This article provides a detailed overview of its datasheet specifications, key applications, and the advantages of its SOT-23 surface-mount package.

Datasheet Overview and Key Specifications

The BAS21UE6327HTSA1 is characterized by its very fast switching speed, which is crucial for high-frequency circuits. Key electrical parameters from its datasheet include a repetitive peak reverse voltage (V_RRM) of 250 V and a maximum average forward rectified current (I_F) of 200 mA. Its low reverse recovery time ensures minimal switching losses, making it highly efficient.

A defining feature of this diode is its low forward voltage drop, typically around 1.25 V at a forward current of 100 mA. This contributes to higher overall circuit efficiency by reducing power dissipation. Furthermore, it boasts a very high surge current capability (I_FSM) of 2 A, enhancing its durability against transient currents. The device is also characterized by its excellent thermal performance and stability across a wide operating temperature range from -65 °C to +175 °C.

Primary Applications

Due to its electrical characteristics, the BAS21UE6327HTSA1 is exceptionally versatile. Its primary applications include:

High-Speed Switching: It is ideal for use in high-frequency rectification circuits, such as those found in switch-mode power supplies (SMPS) and DC-DC converters.

Protection Circuits: The diode is commonly used for clipping and clamping to protect sensitive ICs from voltage spikes and electrostatic discharge (ESD).

General-Purpose Rectification: It serves well in low-current rectification tasks in power supplies, battery-powered devices, and consumer electronics.

Signal Demodulation: Its fast switching speed makes it suitable for RF and signal demodulation applications in communication systems.

SOT-23 Package Advantages

The device is housed in a SOT-23 (Small Outline Transistor) package, a industry-standard surface-mount technology (SMT) package. This compact three-lead package offers significant benefits:

Space Efficiency: Its small footprint (approximately 2.9 x 1.3 x 0.95 mm) is critical for miniaturized PCB designs in modern electronics.

Automated Assembly: The SOT-23 package is perfectly suited for high-volume, automated PCB assembly, streamlining the manufacturing process.

Good Power Dissipation: Despite its small size, the package provides effective thermal characteristics, allowing the diode to operate reliably within its specified power limits.

ICGOODFIND Summary

The Infineon BAS21UE6327HTSA1 is a highly reliable and efficient high-speed switching diode. Its robust electrical characteristics, including a high reverse voltage, fast switching speed, and low forward voltage, make it an excellent choice for a broad spectrum of applications from power management to signal processing. Encased in the ubiquitous and practical SOT-23 package, it delivers performance and durability ideal for space-constrained, modern electronic designs.

Keywords: High-Speed Switching Diode, SOT-23 Package, Clamping Circuit, Reverse Recovery Time, Low Forward Voltage