BAT54ST-HF

Overview

The BAT54ST-HF is a Schottky barrier rectifier manufactured by Comchip Technology, designed for surface mount applications. It features a maximum repetitive peak reverse voltage of 30 V and a forward current capability of 0.2 A. The device utilizes an ultra-small SOT-523 package to facilitate compact circuit designs. Key electrical parameters include a reverse recovery time of 5 ns, ensuring fast switching performance. The component is RoHS compliant and lead-free, suitable for modern electronics requiring low forward voltage drop and high efficiency in signal or power rectification tasks.

Feature Summary

• Low forward voltage drop for improved energy efficiency
• Fast switching speed with 5 ns reverse recovery time
• PN junction guard ring structure for transient and ESD protection
• Ultra-small surface mount package design

Applications

• High-speed signal rectification in consumer electronics
• Power management circuits requiring low voltage drop
• Protection diodes in data communication interfaces
• Small-signal switching applications in portable devices

Procurement Notes

Verify the specific ordering suffix and package variant against the official Comchip Technology datasheet before procurement. Ensure that the received components match the required RoHS compliance status and lead-free specifications. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm authenticity and avoid counterfeit risks. Check for any recent product change notifications that may affect pinout or electrical characteristics.

Selection Notes

Select this component when space constraints require an ultra-small SOT-523 footprint combined with fast switching capabilities. It is appropriate for circuits where low forward voltage drop is critical for maintaining signal integrity or power efficiency. Consider the 30 V reverse voltage rating to ensure adequate margin for the operating environment. Evaluate the 0.2 A current limit against peak load requirements to prevent thermal overstress during continuous operation.

Part Context

This part belongs to the Schottky barrier rectifier category from Comchip Technology, specifically engineered for surface mount technology. It is part of a series designed to replace larger through-hole components in modern PCB layouts. The device complements other small-signal diodes in the manufacturer's portfolio, offering a balance between speed, voltage rating, and physical size for compact electronic assemblies.

Replacement Considerations

Direct substitutes may include BAT54S or BAT54C variants from other manufacturers, provided they share the SOT-523 package and similar electrical ratings. Verify compatibility regarding forward voltage drop and reverse recovery time. Ensure that any replacement maintains the same pin configuration and thermal dissipation characteristics to fit existing board layouts without modification.