DTA143TUBTL

Overview

The DTA143TUBTL is a digital transistor from Rohm Semiconductor, featuring an NPN bipolar junction transistor integrated with a single base resistor. This component is housed in the SOT-323 surface-mount package, designed for compact circuit layouts. It functions as a solid-state switch or amplifier, where the internal resistor simplifies biasing networks by reducing the number of external components required on the printed circuit board. The device offers high reliability and consistent electrical characteristics suitable for general-purpose switching applications in consumer electronics and portable devices.

Feature Summary

• Integrated NPN transistor with built-in base resistor for simplified circuit design
• Compact SOT-323 surface-mount package optimized for space-constrained applications
• High reliability and stable performance for general-purpose switching tasks

Applications

• General-purpose switching circuits in portable electronic devices
• Driver stages for small-signal loads in consumer electronics
• Logic level translation and interface buffering in microcontroller systems

Procurement Notes

Verify the exact ordering code against manufacturer documentation to ensure correct suffix alignment. Confirm package type and tape-and-reel specifications prior to purchase. Cross-reference datasheet revisions to validate current electrical parameters and compliance status. Ensure supply chain authenticity through authorized distributors only.

Selection Notes

Select this component when a compact NPN switch with integrated biasing is required. Evaluate the base resistor value against specific logic voltage levels to ensure proper saturation. Consider the SOT-323 footprint constraints during PCB layout. Verify thermal dissipation requirements match the application's power budget.

Part Context

This part belongs to Rohm's series of digital transistors, which combine bipolar junction transistors with resistive networks. These components replace discrete transistor-resistor combinations, saving board space and assembly time. The DTA143 variant specifically denotes an NPN configuration with a defined base resistance value, distinguishing it from PNP counterparts or different resistor values within the same family.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in verified sources. Consult manufacturer cross-reference tools for equivalent components. Ensure any replacement matches the SOT-323 package, NPN configuration, and base resistor value to maintain circuit functionality.