MMBD4448HTA-7

Overview

The MMBD4448HTA-7-F is a surface mount fast switching diode manufactured by Diodes Incorporated. It features a dual common anode configuration housed in an SOT523 package. The device supports a peak repetitive reverse voltage of 80 V and a forward continuous current of 500 mA. Power dissipation is rated at 150 mW with a thermal resistance of 833 °C/W. Electrical characteristics include a maximum reverse recovery time of 4.0 ns, a total capacitance of 3.5 pF, and a forward voltage ranging from 0.62 V to 1.25 V depending on current. Operating temperature ranges from -55°C to +150°C.

Feature Summary

• Dual common anode configuration for general-purpose switching applications
• Ultra-small SOT523 surface mount package design
• Fast switching speed with 4.0 ns reverse recovery time
• High conductance performance

Applications

• General-purpose switching circuits
• DC-DC converter output rectification
• Signal demodulation
• Clamping and protection circuits

Procurement Notes

Verify the specific ordering suffix '-7-F' corresponds to tape and reel packaging containing 3,000 units per carrier. Confirm compliance requirements such as RoHS, halogen-free, and antimony-free status against project specifications. Ensure the SOT523 footprint matches the PCB layout guidelines provided in the datasheet. Validate that the 150 mW power dissipation rating aligns with the thermal management strategy for the intended operating environment.

Selection Notes

Select this component when a dual common anode topology is required within a compact SOT523 form factor. The 80 V reverse voltage rating suits low-voltage signal processing and power supply applications. Consider the 4.0 ns reverse recovery time for high-frequency switching operations where minimal charge storage is critical. Evaluate the 500 mA forward current capability against peak load requirements to ensure reliable operation without exceeding thermal limits.

Part Context

This part belongs to the MMBD4448HT series, which includes variants like MMBD4448HT, MMBD4448HTC, and MMBD4448HTS. These devices share identical electrical characteristics but differ in internal diode configurations (single, dual common cathode, quad). The HTA variant specifically provides two diodes connected at a common anode terminal, offering flexibility in circuit design compared to single or common cathode options.

Replacement Considerations

Direct substitutes within the same family include MMBD4448HT-7-F (single diode), MMBD4448HTC-7-F (dual common cathode), and MMBD4448HTS-7-F (quad diode). Cross-family replacements must match the SOT523 package, 80 V rating, and 4 ns recovery time. Verify pinout compatibility if substituting with different configurations to prevent circuit malfunction.

FAQ

What is the internal configuration of the MMBD4448HTA-7-F?

It contains two independent diodes arranged in a dual common anode configuration.

What is the maximum reverse recovery time specified for this device?

The maximum reverse recovery time (trr) is 4.0 ns under standard test conditions.

Is the MMBD4448HTA-7-F compliant with environmental directives?

Yes, it is totally lead-free, fully RoHS compliant, and halogen and antimony free.