onsemi

MBRS140LT3

MBRS140LT3 Description

The MBRS140LT3 from onsemi is a 40V, 1A Schottky diode in an SMB surface-mount package, designed for high-efficiency rectification in fast-switching circuits. This diode features ultra-fast recovery (<500ns) and low forward voltage drop (500mV max @ 1A), making it ideal for applications requiring minimal power loss and high-speed operation. Its Schottky technology ensures superior thermal performance and reduced switching noise compared to conventional PN-junction diodes. Packaged in Tape & Reel (TR), it is optimized for automated assembly, while its Moisture Sensitivity Level (MSL) 1 (Unlimited) rating ensures reliability in storage and handling.

MBRS140LT3 Features

• Low V_F (500mV max @ 1A): Enhances efficiency by minimizing conduction losses.
• Fast Recovery (<500ns): Reduces switching losses in high-frequency circuits.
• High Reverse Voltage (40V): Suitable for moderate-voltage applications.
• Low Reverse Leakage (400µA @ 40V): Improves power efficiency and thermal stability.
• Surface-Mount (SMB): Compact footprint for space-constrained designs.
• Schottky Technology: Delivers lower noise and better thermal performance than standard diodes.
• REACH Unaffected & ECCN EAR99: Compliant with environmental and export regulations.

MBRS140LT3 Applications

This diode is particularly suited for:

• Switching Power Supplies (SMPS): Efficient rectification in DC-DC converters.
• Reverse Polarity Protection: Low V_F minimizes voltage drop in protection circuits.
• High-Frequency Circuits: Fast recovery enables clean switching in RF and signal conditioning.
• Portable Electronics: Compact SMB package ideal for smartphones, tablets, and wearables.
• Automotive Systems: Reliable performance in infotainment and power management.

Conclusion of MBRS140LT3

The MBRS140LT3 stands out for its fast recovery, low forward voltage, and robust SMB packaging, making it a top choice for high-efficiency, high-speed rectification. While marked as obsolete, its performance remains competitive in applications demanding low power loss and compact design. Engineers should verify replacement options but can leverage its Schottky advantages in legacy or niche designs requiring 40V/1A capabilities.