MMBD4448DW-HF

Overview

The MMBD4448DW-HF is a dual common-anode switching diode array manufactured by Comchip Technology. It features two independent silicon planar junctions housed in an ultra-small SOT-363 (SC-88) surface-mount package. The device supports a maximum repetitive peak reverse voltage of 75V and an average forward rectified current of 200mA per diode. Key electrical characteristics include a maximum DC reverse leakage current of 100nA at 70V and a typical reverse recovery time of 4ns, ensuring fast switching performance for general-purpose applications.

Feature Summary

• Dual configuration with common-anode topology for efficient circuit design
• Ultra-small SOT-363 surface-mount package for space-constrained layouts
• Fast switching speed with low reverse recovery time
• Low forward voltage drop and minimal reverse leakage current

Applications

• General-purpose signal switching circuits
• High-speed digital logic interface protection
• Clamping and steering applications in data lines

Procurement Notes

Verify the specific manufacturer datasheet for the MMBD4448DW-HF to confirm pinout compatibility and absolute maximum ratings before integration. Ensure the component meets RoHS compliance requirements for your target market. Cross-reference the part number with authorized distributors to validate authenticity and supply chain integrity, as generic listings may not reflect the exact Comchip Technology specification.

Selection Notes

Select this component when a compact dual-diode solution is required for high-speed switching tasks. The common-anode arrangement simplifies biasing compared to discrete single diodes. Consider the SOT-363 footprint constraints and thermal dissipation capabilities relative to the expected forward current load. Verify that the 75V reverse voltage rating exceeds the peak inverse voltage present in the application circuit.

Part Context

This component belongs to the family of surface-mount switching diode arrays designed for high-density PCB assembly. It serves as a compact alternative to discrete diode configurations, reducing board space and assembly complexity. The technology utilizes silicon epitaxial planar chips optimized for fast response times and reliable operation across standard industrial temperature ranges.

Replacement Considerations

Compatible substitutes include the MMBD4448DW from other manufacturers such as Diodes Incorporated or Micro Commercial Components, provided they share the SOT-363 package and identical electrical parameters like 75V VRRM and 200mA IO.