BAT54-HE3-18

Single Diodes Overview

The BAT54-HE3-18 is a single small signal Schottky diode manufactured by Vishay General Semiconductor - Diodes Division. It features a repetitive peak reverse voltage of 30 V and a forward continuous current rating of 200 mA. The device operates within an ambient temperature range of -55 °C to +125 °C, with a junction temperature limit of 125 °C. Electrical characteristics include a maximum leakage current of 2 μA at 25 V and a typical reverse recovery time of 5 ns. The component is housed in a SOT-23 surface-mount package.

Single Diodes Feature Summary

• Features very low turn-on voltage and fast switching capabilities
• Protected by a PN junction guard ring against excessive voltage such as electrostatic discharges
• RoHS-compliant and AEC-Q101 qualified automotive grade construction

Single Diodes Applications

• General purpose small signal rectification
• Automotive electronic circuits requiring AEC-Q101 qualification
• Low voltage switching applications

Single Diodes Procurement Notes

Verify the specific ordering code suffix matches the required packaging option, as the datasheet lists both 08 (3K per reel) and 18 (10K per reel) codes for this part family. Confirm that the HE3 designation aligns with the necessary AEC-Q101 automotive qualification requirements for your specific application environment. Ensure compatibility with standard SOT-23 footprint layouts during PCB design.

Single Diodes Selection Notes

Select this component when a single Schottky diode with low forward voltage drop and high-speed switching is required in a compact SOT-23 package. The HE3 variant is specifically chosen over the E3 commercial grade version when automotive reliability standards and AEC-Q101 qualification are mandatory for the target system. Consider the thermal resistance of 430 K/W for heat dissipation calculations.

Single Diodes Part Context

This component belongs to the Vishay BAT54 series of small signal Schottky diodes, which includes single and dual configurations. The BAT54-HE3-18 represents the single diode variant within this family. Other members of the series include dual common anode (BAT54A), dual common cathode (BAT54C), and dual serial (BAT54S) configurations, all sharing similar electrical performance profiles.

Single Diodes Replacement Considerations

Direct replacements within the same Vishay family include BAT54-E3-18 for non-automotive applications or other BAT54 variants like BAT54A-HE3-18 if a dual diode configuration is acceptable. Cross-manufacturer equivalents should be verified against the 30 V reverse voltage and 200 mA forward current limits.