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MBRD340

MBRD340 Description

The MBRD340 from onsemi is a Schottky diode designed for high-efficiency power applications, offering 40V reverse voltage (Vr) and 3A average rectified current (Io). Packaged in a DPAK (TO-252) surface-mount form factor, it is optimized for fast recovery (<500ns) and low forward voltage drop (600mV max @ 3A), making it ideal for switching power supplies and DC-DC converters. As part of the SWITCHMODE™ series, it combines low leakage (200µA @ 40V) with robust thermal performance, though it is now classified as obsolete by the manufacturer.

MBRD340 Features

• Fast Recovery: Sub-500ns switching for high-frequency applications.
• Low Forward Voltage: 600mV max at 3A reduces power losses.
• High Current Handling: 3A continuous current rating.
• Surface-Mount DPAK Package: Compact and suitable for automated assembly.
• Low Leakage: 200µA max at 40V enhances efficiency.
• Schottky Technology: Delivers minimal switching noise and high thermal stability.
• REACH Unaffected: Compliant with environmental regulations.

MBRD340 Applications

The MBRD340 excels in:

• Switching Power Supplies: Due to fast recovery and low Vf, it minimizes energy loss.
• DC-DC Converters: Efficient voltage regulation in step-down/step-up circuits.
• Reverse Polarity Protection: Low leakage ensures reliable circuit safeguarding.
• Freewheeling Diodes: Protects inductive loads in motor drives and relays.
• Portable Electronics: Compact DPAK package suits space-constrained designs.

Conclusion of MBRD340

While obsolete, the MBRD340 remains a high-performance Schottky diode for fast-switching, high-current applications. Its low forward drop, fast recovery, and DPAK packaging make it a legacy choice for power management in industrial, automotive, and consumer electronics. Designers seeking modern alternatives should verify compatibility, but its efficiency and reliability in demanding circuits underscore its historical value.