B5819W

Overview

The B5819W is a Schottky barrier rectifier manufactured by Shenzhen Slkormicro Semicon Co., Ltd. It features a maximum repetitive peak reverse voltage of 40 V and an average forward rectified current of 1 A. The device utilizes SOD-123 surface-mount packaging. Key electrical characteristics include a maximum forward voltage drop of 600 mV at 1 A and a maximum reverse leakage current of 1 mA at 40 V. The component operates within a junction temperature range of -55°C to 125°C.

Feature Summary

• Schottky technology provides extremely fast switching speeds with negligible reverse recovery time.
• Low forward voltage drop minimizes conduction losses for improved efficiency.
• Surface-mount SOD-123 package enables compact circuit board layouts.

Applications

• Switch mode power supplies
• High frequency DC to DC converters
• Free wheeling diodes in inductive circuits
• Polarity protection circuits

Procurement Notes

Verify the manufacturer designation on the component marking, as multiple vendors produce this standard part number. Confirm the specific package variant matches the required footprint. Ensure the selected supplier provides valid RoHS compliance documentation. Cross-reference the datasheet parameters against the specific application requirements before finalizing procurement orders.

Selection Notes

Select this component when low forward voltage and high-speed switching are critical for the design. The 40 V rating suits low-voltage applications requiring efficient rectification. The SOD-123 package is appropriate for space-constrained surface-mount designs. Evaluate thermal management capabilities based on the expected forward current and ambient operating conditions.

Part Context

This component belongs to the category of discrete semiconductor diodes, specifically Schottky rectifiers. It serves as a fundamental passive-active hybrid element in power electronics. The SOD-123 form factor is widely adopted in consumer electronics and industrial control systems for its balance of current handling and physical size.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify pinout compatibility and electrical ratings if considering alternative manufacturers' equivalents for this specific function.