MMBD1504

Overview

The MMBD1504 is a dual common cathode switching diode manufactured by Fairchild Semiconductor in an SOT-23 surface-mount package. It features a maximum repetitive reverse voltage of 100 V and supports a maximum average forward current of 0.2 A. The device exhibits a low recovery time of 4 ns, enabling high-speed switching applications. Key electrical characteristics include a peak reverse surge current rating of 2 A and a maximum forward voltage drop of 1.1 V at the rated current. The component operates within a junction temperature range from -55 °C to +150 °C.

Feature Summary

• Dual common cathode configuration for efficient circuit design
• Ultra-fast switching speed with minimal recovery time
• Low leakage current for improved signal integrity

Applications

• High-speed switching circuits
• Clamping and protection stages
• General purpose rectification in compact designs

Procurement Notes

Verify the specific manufacturer suffix against official datasheets to confirm pinout compatibility and electrical tolerances. Ensure the sourcing channel provides original documentation rather than third-party summaries. Cross-reference the RoHS status and environmental compliance data directly with the manufacturer's latest release notes before finalizing procurement decisions.

Selection Notes

Select this component when space constraints require a dual-diode solution in an SOT-23 footprint. The 100 V reverse voltage rating suits low-voltage logic and signal processing environments. Consider the 4 ns recovery time for applications requiring rapid transition between conducting and blocking states without significant signal distortion.

Part Context

Fairchild Semiconductor, now part of onsemi, produces the MMBD1504 as part of its small-signal diode portfolio. This series is designed for general-purpose applications where size and switching speed are critical. The device utilizes silicon epitaxial planar technology to ensure reliable performance across industrial and consumer electronics markets.

Replacement Considerations

Direct substitutes include the MMBD1503A and MMBD1501A from compatible manufacturers. Verify that alternative parts maintain the same SOT-23-3 package outline and electrical ratings to ensure mechanical and functional interchangeability without redesigning the PCB layout.

FAQ

What is the recovery time specification for the MMBD1504?

The MMBD1504 has a specified recovery time of 4 ns, making it suitable for ultra-fast switching applications.

How is the internal structure configured?

The device contains two independent diodes connected in a common cathode configuration within a single SOT-23 package.

What is the maximum operating junction temperature?

The maximum operating junction temperature for the MMBD1504 is +150 °C.