B340LB-M3/5BT

Overview

The B340LB-M3/5BT is a single Schottky barrier rectifier manufactured by Vishay General Semiconductor - Diodes Division. It features a 40 V maximum repetitive peak reverse voltage and a 3 A average forward rectified current rating. The device utilizes a DO-214AA (SMB) surface-mount package. Key electrical parameters include a low forward voltage drop of 700 mV at rated current and a maximum non-repetitive peak forward surge current of 80 A. The component supports a maximum operating junction temperature of +150 °C and complies with RoHS directives.

Feature Summary

• Guardring structure provides overvoltage protection for enhanced reliability
• Extremely fast switching characteristics enable high-frequency operation
• Low forward voltage drop minimizes conduction losses
• Compliant with RoHS directive 2002/95/EC and WEEE 2002/96/EC standards

Applications

• Primary circuits in low voltage high frequency inverters
• Freewheeling diode applications in power supplies
• DC-to-DC converter output rectification
• Polarity protection circuits

Procurement Notes

Verify the specific suffix /5BT against the manufacturer's official datasheet to confirm the reel packaging quantity and tape specifications. Ensure the ordering part number matches the exact DO-214AA case style and terminal finish requirements for your assembly process. Cross-reference the M3 suffix to confirm lead-free composition and compliance with current environmental regulations before finalizing procurement orders.

Selection Notes

Select this component when a surface-mount Schottky rectifier with a 3 A current rating and 40 V blocking capability is required. The DO-214AA package offers a compact footprint suitable for space-constrained PCB designs. Consider the low forward voltage and fast switching speeds for efficiency optimization in high-frequency DC-DC conversion or freewheeling applications where reduced heat dissipation is critical.

Part Context

This part belongs to the Vishay B3xx series of Schottky barrier rectifiers, designed for general-purpose rectification in low-voltage environments. The M3 suffix indicates a lead-free terminal finish compliant with international environmental standards. The LB variant typically denotes specific mechanical or performance optimizations within the SMB package family, distinguishing it from standard DO-214AC counterparts.

Replacement Considerations

Direct substitutes include the B340A-E3/5AT and B340LB-E3/5BT, which share identical electrical ratings and package dimensions. Verify that any replacement maintains the same DO-214AA footprint and thermal characteristics to ensure compatibility with existing board layouts and soldering profiles.