MMBD4448HTS

Overview

The MMBD4448HTS is a single switching diode manufactured by Good-Ark Semiconductor, housed in an SOT-523 surface-mount package. It features a peak repetitive reverse voltage of 80 V and a forward continuous current rating of 500 mA. The device exhibits a maximum reverse recovery time of 4 ns and a typical junction-to-ambient thermal resistance of 833 °C/W. Electrical characteristics include a reverse breakdown voltage of 80 V at 2.5 μA, a maximum reverse current of 0.1 μA at 70 V, and a terminal capacitance of 3.5 pF at 6 V and 1 MHz.

Feature Summary

• Fast switching speed with a maximum reverse recovery time of 4 ns
• High conductance for efficient signal handling
• Designed for general-purpose switching applications

Applications

• General-purpose signal switching circuits
• High-speed digital logic interfaces
• Clamping and protection in low-voltage systems

Procurement Notes

Verify the specific suffix HTS against official Good-Ark Semiconductor documentation to confirm exact marking codes and packaging specifications. Ensure the sourcing channel provides valid traceability for the SOT-523 package variant. Cross-reference electrical limits with the target application environment to guarantee compliance with absolute maximum ratings during operation.

Selection Notes

Select this component when a compact SOT-523 footprint is required for high-speed switching tasks. The 80 V reverse voltage rating suits low-voltage digital environments. Evaluate the 500 mA forward current capability against load requirements. Consider the 3.5 pF capacitance for high-frequency signal integrity needs where minimal parasitic effects are critical.

Part Context

This part belongs to the MMBD4448Hxx series of switching diodes from Good-Ark Semiconductor. The series includes variants such as HTA, HTC, and HT, all sharing similar electrical profiles but differing in marking codes and specific packaging configurations. The MMBD4448HTS specifically denotes the SOT-523 package version with designated marking A7.

Replacement Considerations

Direct substitutes within the same family include MMBD4448HTA and MMBD4448HTC, provided the marking code difference is acceptable for the assembly process. Other manufacturers' equivalents must match the 80 V reverse voltage, 500 mA current, and SOT-523 package dimensions.