BAT54C-G3-18

Overview

The BAT54C-G3-18 is a small signal Schottky diode manufactured by Vishay Semiconductors, housed in an SOT-23 surface-mount package. It features a dual common cathode circuit configuration with two silicon elements. Key electrical parameters include a repetitive peak reverse voltage of 30 V and a forward continuous current rating of 200 mA. The device exhibits a maximum reverse leakage current of 2 µA at 25 V and a typical forward voltage of 240 mV at 0.1 mA. Thermal characteristics specify a junction-to-ambient thermal resistance of 430 K/W on an FR-4 board, with an operating temperature range from -55 °C to +125 °C.

Feature Summary

• Features very low turn-on voltage and fast switching capabilities for efficient signal processing.
• Incorporates a PN junction guardring structure designed to protect against excessive voltage events such as electrostatic discharges.
• Utilizes molding compound that meets UL 94 V-0 flammability ratings for enhanced safety compliance.

Applications

• General purpose switching applications requiring fast response times
• Power management circuits within portable electronic devices
• Signal rectification in high-frequency communication equipment

Procurement Notes

Verify the specific ordering code suffix to confirm packaging quantities and reel dimensions. Confirm whether AEC-Q101 automotive qualification is required, as it is available upon request but not standard for this base part number. Ensure compatibility with RoHS directives and check material categorization documentation for environmental compliance requirements before finalizing procurement orders.

Selection Notes

Select this component when a compact SOT-23 footprint is necessary for dual common cathode Schottky configurations. Consider the 30 V reverse voltage limit and 200 mA current capacity for suitability in low-power signal paths. Evaluate the 5 ns reverse recovery time against circuit speed requirements. Verify thermal dissipation limits based on the specific PCB copper area and ambient temperature conditions during operation.

Part Context

This component belongs to the BAT54 series of small signal Schottky diodes produced by Vishay Semiconductors. The series includes variants with different internal circuit configurations, such as single, common anode, and dual serial arrangements. The BAT54C specifically denotes the dual common cathode topology, distinguishing it from other series members while sharing similar physical packaging and general electrical performance characteristics.

Replacement Considerations

BAT54C-G3-08 serves as a direct functional substitute differing only in packaging quantity per reel.

FAQ

Is the BAT54C-G3-18 qualified for automotive applications?

AEC-Q101 qualification is available for this series but must be requested separately; it is not included as standard for the base part number.

What is the maximum operating junction temperature?

The maximum junction temperature (Tj) is specified as 125 °C under absolute maximum ratings.

How does the PN junction guardring benefit the device?

The guardring protects the device against excessive voltage stresses, specifically providing defense against electrostatic discharge events.