Infineon BAT5404E6327HTSA1 Schottky Diode: Key Features and Application Circuits

The Infineon BAT5404E6327HTSA1 is a surface-mount Schottky barrier diode, representing a critical component in modern electronic design where efficiency, speed, and space are paramount. This diode is part of a family of devices engineered for high-performance switching and power management applications. Its primary advantage lies in the Schottky barrier principle, which results in a lower forward voltage drop and faster switching speeds compared to standard PN-junction diodes. This makes it an indispensable solution for improving efficiency in a wide array of circuits.

Key Features

The BAT5404E6327HTSA1 is packaged in a compact SOT-23-3 housing, making it ideal for high-density PCB designs. It is configured as a common-cathode dual-diode array, integrating two independent diodes within a single package. This configuration saves board space and simplifies circuit layout. Key electrical characteristics include:

A remarkably low forward voltage (typically 380mV at IF=0.1A), which minimizes power loss and heat generation.

A high maximum average forward current of 200mA per diode.

An extremely low reverse leakage current.

A fast switching response, enabling operation in high-frequency circuits without significant recovery time penalties.

These features collectively ensure enhanced energy efficiency and robust performance in demanding environments.

Application Circuits

1. Power OR-ing and Redundancy Circuits: In systems with multiple power inputs (e.g., a main adapter and a battery backup), the BAT5404E6327HTSA1 is perfect for OR-ing diodes. Its low forward voltage ensures minimal voltage drop, preserving valuable power and extending battery life. The common-cathode configuration allows it to seamlessly steer current from the highest voltage source to the load.

2. Reverse Polarity Protection: A fundamental use is protecting sensitive circuitry from accidental reverse connection of the power supply. A single diode placed in series with the positive supply line will block current flow if the voltage is reversed. The low VF of the Schottky diode is crucial here, as it reduces the voltage loss and power dissipation compared to using a standard diode.

3. High-Frequency Rectification: Due to its fast recovery characteristics, this diode is excellent for high-frequency rectification in switch-mode power supplies (SMPS), DC-DC converters, and RF detectors. It efficiently converts AC to DC at frequencies where standard diodes would suffer from excessive switching losses.

4. Freewheeling and Clamping Diodes: In inductive load circuits, such as those driving motors or relays, the BAT5404E6327HTSA1 serves as a freewheeling diode. It provides a safe path for the current to decay when the driving switch turns off, protecting other components from voltage spikes caused by the collapsing magnetic field.

ICGOODFIND: The Infineon BAT5404E6327HTSA1 Schottky diode stands out as a superior choice for designers seeking to optimize for efficiency, speed, and space. Its dual-diode common-cathode design and exceptional low forward voltage make it a versatile component for critical functions like power management, protection, and high-frequency rectification, proving essential in portable, automotive, and industrial applications.

Keywords:

Schottky Diode

Low Forward Voltage

Common-Cathode

Power OR-ing

Reverse Polarity Protection