BAR43S

Diode Arrays Overview

The BAR43S is a single-element Schottky barrier rectifier manufactured by Fairchild Semiconductor, housed in a SOT-23 surface-mount package. It features a maximum repetitive reverse voltage of 30 V and an average rectified forward current rating of 200 mA. The device supports a non-repetitive peak forward surge current of 750 mA with a pulse width of 1.0 second. Electrical characteristics include a maximum forward voltage of 800 mV at 100 mA and a reverse leakage current of 100 μA at 25 V and 100°C. Thermal resistance from junction to ambient is 430 °C/W, with a power dissipation capability of 290 mW.

Diode Arrays Feature Summary

• Utilizes Schottky barrier technology for low forward voltage drop and high switching speed
• Features guard ring design for enhanced stress protection and reliability
• Encapsulated in epoxy material compliant with UL94 VO flammability ratings

Diode Arrays Applications

• General purpose rectification in consumer electronics
• Freewheeling diodes in switched-mode power supplies
• DC-DC converter output rectification

Diode Arrays Procurement Notes

Verify the manufacturer origin, as the datasheet indicates Fairchild Semiconductor. Confirm the specific marking code DA5 corresponds to the BAR43S variant within the SOT-23 package. Ensure compliance with RoHS directives if required by your application standards. Check for any process change notifications regarding packaging or material composition updates prior to final procurement decisions.

Diode Arrays Selection Notes

Select this component for applications requiring compact surface-mount solutions with moderate current handling capabilities. The SOT-23 package is suitable for space-constrained designs. Consider the thermal resistance and power dissipation limits when designing heat management strategies. Verify that the 30 V reverse voltage rating aligns with the peak inverse voltage present in the target circuit environment.

Diode Arrays Part Context

This component belongs to the BAR43/A/C/S family of Schottky rectifiers produced by Fairchild Semiconductor. The 'S' suffix denotes the specific electrical characteristic variant within this series, distinguished by its marking code DA5. These devices are designed for general-purpose rectification tasks where low forward voltage and fast switching are beneficial.

Diode Arrays Replacement Considerations

Direct replacements must match the SOT-23 package, 30 V reverse voltage, and 200 mA forward current ratings. Verify equivalent forward voltage and reverse leakage specifications to ensure circuit performance compatibility. Cross-reference marking codes to confirm functional identity among potential substitute parts.