B5819WS

Overview

The B5819WS is a Schottky Barrier Rectifier manufactured by ANBON SEMICONDUCTOR (INT'L) LIMITED, housed in an SOD-323 surface-mount package. It features a maximum repetitive peak reverse voltage of 40V and supports an average forward rectified current of 1A. The device exhibits a typical junction capacitance of 110pF and operates within a temperature range of -55°C to +150°C. Key electrical characteristics include a maximum instantaneous forward voltage of 0.6V at 1A and 0.9V at 3A, with a maximum instantaneous reverse current of 1mA at rated DC reverse voltage under 25°C conditions.

Feature Summary

• Metal silicon junction utilizing majority carrier conduction for high efficiency
• Low forward voltage drop to minimize power loss
• High surge capability for robust performance
• Guarding functionality for overvoltage protection

Applications

• Low voltage, high frequency inverters
• Free wheeling circuits
• Polarity protection applications

Procurement Notes

Verify the specific manufacturer designation upon procurement, as the B5819WS part number appears across multiple semiconductor vendors including Born Semiconductor, ASEMI, and others. Confirm that the received component matches the ANBON Semiconductors datasheet specifications, particularly regarding the SOD-323 mechanical outline and marking code SL. Ensure the supplier provides documentation confirming compliance with the MIL-STD-750 solderability standards referenced in the official technical data.

Selection Notes

Select this component for designs requiring low forward voltage drop and high switching efficiency in compact layouts. The SOD-323 package is suitable for space-constrained PCBs. Consider the 40V reverse voltage rating and 1A current capacity against circuit requirements. Evaluate thermal management needs based on the derating curve provided in the datasheet, as performance depends on case temperature. Verify compatibility with high-frequency inverter or polarity protection topologies.

Part Context

The B5819WS belongs to a series of Schottky Barrier Rectifiers that includes the B5817WS and B5818WS variants. These components share similar physical dimensions and operational principles but differ primarily in their maximum repetitive peak reverse voltage ratings, which are 20V, 30V, and 40V respectively. This series is designed for applications demanding high current capability and low power loss in small-scale, high-density circuit designs.

Replacement Considerations

Public confirmed substitute part numbers: PMEG4010CEJ.