BAS21-HE3-18

Single Diodes Overview

The BAS21-HE3-18 is a silicon planar high-speed switching diode manufactured by Vishay Semiconductors. It features a peak repetitive reverse voltage of 250 V and an average forward current rating of 250 mA, with a maximum non-repetitive peak forward surge current of 1 A. The device exhibits a typical reverse recovery time of 4 ns and a maximum junction capacitance of 4 pF at zero bias. Operating characteristics include a maximum DC forward current of 250 mA and a forward voltage drop of 1.25 V at 200 mA. The component supports a wide operating temperature range from -55 °C to +150 °C and is housed in the SOT-23 surface-mount package.

Single Diodes Feature Summary

• High-speed switching capability with a typical reverse recovery time of 4 ns for efficient signal processing
• Robust thermal performance supporting junction temperatures up to 150 °C
• Miniature SOT-23 surface-mount package designed for automated insertion and space-constrained layouts

Single Diodes Applications

• General-purpose signal switching circuits
• High-frequency rectification applications
• Clamping and protection in data line interfaces

Single Diodes Procurement Notes

Verify the specific HE3-18 suffix against the manufacturer's official datasheet to confirm compliance with RoHS directives and Halogen-free status. Confirm that the SOT-23 package dimensions match the design footprint requirements. Ensure the selected variant meets the required peak reverse voltage and forward current ratings for the target application environment.

Single Diodes Selection Notes

Select this component when a fast-switching silicon diode is required in a compact SOT-23 form factor. The 250 V reverse voltage rating provides sufficient margin for many low-voltage logic and signal lines. Consider the 4 ns reverse recovery time for high-frequency operations where standard diodes may introduce excessive delay or distortion.

Single Diodes Part Context

This part belongs to the Vishay BASxx series of small-signal switching diodes. These devices are engineered for general-purpose use in consumer electronics and industrial equipment. The HE3 designation indicates an environmentally compliant product line adhering to strict material restrictions.

Single Diodes Replacement Considerations

Compatible substitutes include the BAV21W-HE3-18 and BAS21H. Verify that alternative components maintain identical pin configurations and meet or exceed the 250 V reverse voltage and 250 mA forward current specifications.