SMBT5551-TP

Overview

The SMBT5551-TP is an NPN general-purpose amplifier transistor manufactured by Micro Commercial Components (MCC). It is housed in a SOT-23-6L surface-mount package. The device supports a collector current of 600 mA and a collector power dissipation of 300 mW at 25°C. Key electrical ratings include a collector-emitter voltage of 160 V, a collector-base voltage of 180 V, and an emitter-base voltage of 6 V. DC current gain ranges from 80 to 250 depending on operating conditions. Transition frequency reaches up to 300 MHz, with a thermal resistance of 416°C/W junction to ambient.

Feature Summary

• Dual base configuration within a compact SOT-23-6L package for improved thermal performance
• RoHS compliant construction with lead-free finish
• Halogen-free option available via specific ordering suffix
• Moisture sensitivity level 1 classification

Applications

• General purpose amplification circuits
• Switching applications requiring high voltage tolerance
• Low-power signal processing stages

Procurement Notes

Verify the component authenticity by checking against authorized MCC distributors listed on the manufacturer's website. Ensure the ordering suffix matches the required environmental specifications, such as halogen-free status. Confirm that the tape and reel quantity aligns with production requirements before finalizing orders.

Selection Notes

Select this component when a dual-base NPN transistor is required for enhanced heat dissipation in space-constrained designs. The SOT-23-6L package offers higher power handling compared to standard three-terminal variants. Evaluate the 160V breakdown voltage against circuit peak transient requirements to ensure adequate safety margins during operation.

Part Context

This part belongs to the SMBT series of NPN transistors designed for general-purpose use. It shares functional similarities with other high-voltage small-signal transistors but distinguishes itself through the six-lead SOT-23-6L footprint. The dual-base structure facilitates better thermal management compared to traditional single-base packages.

Replacement Considerations

Direct pin-compatible replacements must match the SOT-23-6L package and dual-base architecture. Verify that substitute components meet or exceed the 160V collector-emitter voltage rating and 600mA current capacity. Electrical characteristics such as hFE and fT should be cross-referenced to ensure circuit compatibility.