MMBD4448HTS-HF

Overview

The MMBD4448HTS-HF is a surface-mount fast switching diode array manufactured by Comchip Technology. It features two common anode diodes housed in a compact SOT-363 package. The device supports a maximum DC reverse voltage of 80 V and an average rectified current of 250 mA per diode. It exhibits a low forward voltage of 1.25 V at 150 mA and a rapid reverse recovery time of 4 ns. The component operates within a junction temperature range of -65°C to 150°C, ensuring reliability in high-speed switching applications.

Feature Summary

• Fast switching speed with low reverse recovery time for efficient signal processing
• Low forward voltage drop to minimize power loss during conduction
• Compact six-terminal surface mount package for space-constrained designs
• High thermal stability suitable for wide operating temperature ranges

Applications

• General purpose high-speed switching circuits
• Clamping and protection in digital logic interfaces
• Signal demodulation in communication equipment
• Pulse generation and timing circuits

Procurement Notes

Verify the manufacturer designation on the datasheet, as the base part number MMBD4448 is widely produced by multiple vendors including Diodes Incorporated. Confirm that the specific suffix HTS-HF corresponds to the SOT-363 package and RoHS compliance status required for your assembly process. Cross-reference the electrical parameters against the official Comchip Technology specification sheet to ensure compatibility with your circuit design requirements.

Selection Notes

Select this component when a dual common anode configuration is required in a minimal footprint. The SOT-363 package offers a smaller board area compared to discrete dual packages. Ensure the 80 V reverse voltage rating exceeds the peak inverse voltage in your application. The 4 ns reverse recovery time makes it suitable for frequencies where standard rectifiers would introduce excessive delay or heat.

Part Context

This component belongs to the family of surface mount fast switching diode arrays. It serves as a solid-state alternative to discrete diode pairs, reducing assembly complexity and parasitic inductance. The technology utilizes silicon epitaxial planar chips encapsulated in plastic for durability. It is designed for automated pick-and-place manufacturing processes typical in modern electronics production lines.

Replacement Considerations

Direct pin-compatible substitutes include MMBD4448 variants from other manufacturers such as Diodes Incorporated or Weitron, provided they share the SOT-363 package and identical electrical ratings. Verify that any replacement maintains the same reverse recovery time and forward voltage characteristics to ensure circuit performance consistency.