BAT43

Single Diodes Overview

The STMicroelectronics BAT43 is a general-purpose Schottky barrier diode housed in the DO-35 axial through-hole package. It features a maximum DC reverse voltage of 30 V and an average rectified current rating of 200 mA. The device exhibits a low forward voltage drop, specified as 1 V at 200 mA, and maintains a reverse leakage current of 500 nA at 25 V. Key electrical characteristics include a reverse recovery time of 5 ns and a junction capacitance of 7 pF at 1 V and 1 MHz.

Single Diodes Feature Summary

• Metal-to-silicon construction providing very low turn-on voltage for minimal conduction losses
• Fast switching capability with negligible switching losses suitable for high-frequency applications
• Integrated protection against excessive voltage events such as electrostatic discharges

Single Diodes Applications

• General purpose signal detection and mixing circuits
• Clamping and protection stages in RF and microwave systems
• Low-voltage power supply rectification

Single Diodes Procurement Notes

Verify the specific manufacturer designation on the component marking, as multiple vendors produce this part number. Confirm the package type matches the required DO-35 axial leaded form factor. Check the datasheet revision date to ensure compliance with current environmental standards. Note that availability may vary by distributor due to lifecycle status changes.

Single Diodes Selection Notes

Select this component when a robust axial through-hole Schottky diode is required for low-voltage signal processing. The 30 V reverse voltage rating provides adequate margin for standard low-voltage logic and power rails. Ensure the circuit design accommodates the 200 mA continuous current limit and the specific thermal dissipation requirements of the DO-35 package.

Single Diodes Part Context

This component belongs to the broader family of small-signal Schottky diodes designed for efficiency and speed. It serves as a common alternative to silicon PN junction diodes where lower forward voltage drop and faster recovery are critical. The DO-35 package offers reliable mechanical mounting for PCB assembly processes requiring axial leads.

Single Diodes Replacement Considerations

Public confirmed substitute part numbers include BAT43W-V, BAT43 X, and TMMBAT43 variants from other manufacturers.