DTC144TUA-TP

Overview

The DTC144TUA-TP is an NPN digital transistor manufactured by Micro Commercial Components (MCC) in a SOT-323 surface-mount package. It integrates a built-in bias resistor (R1) with a typical value of 47 kΩ, eliminating the need for external input resistors. Key electrical specifications include a collector-emitter breakdown voltage (VCEO) of 50 V, a continuous collector current (IC) of 100 mA, and a DC current gain (hFE) minimum of 100 at IC=1mA, VCE=5V. The device features a transition frequency (fT) of 250 MHz and a maximum power dissipation (PC) of 200 mW at 25°C.

Feature Summary

• Built-in thin-film bias resistors enable inverter circuit configuration without external input components.
• Resistors provide complete isolation to allow negative biasing of the input and minimize parasitic effects.
• Halogen-free "Green" device compliant with RoHS standards.

Applications

• Inverter circuits
• Switching applications requiring simplified design
• General-purpose digital logic interfacing

Procurement Notes

Verify authenticity by purchasing directly from Micro Commercial Components or authorized distributors listed on their official website. Unauthorized sources lack traceability and quality assurance. Confirm the ordering suffix "-TP" indicates tape-and-reel packaging containing 3,000 pieces per reel. Ensure compliance with specific project requirements regarding moisture sensitivity level and flammability ratings before procurement.

Selection Notes

Select this component when a compact NPN digital transistor with integrated base resistance is required. The 47 kΩ internal resistor simplifies circuit design by removing the need for discrete input resistors. Consider the SOT-323 package for space-constrained surface-mount applications. Verify that the 50 V collector-emitter voltage and 100 mA current ratings meet the operational demands of the target switching or inversion application.

Part Context

The DTC144TUA-TP belongs to the DTC144 series of pre-biased NPN transistors from MCC. It is designed to replace multiple discrete components (transistor plus resistors) with a single integrated device. This integration reduces board space and assembly complexity while maintaining consistent electrical characteristics due to the monolithic construction of the thin-film resistors.

Replacement Considerations

Direct substitutes within the same family include other DTC144 variants with different resistor values or packages, such as DTC144EUA-TP (SOT-323, different hFE) or DTC144TE-TP (SOT-523). Cross-manufacturer equivalents should be verified against the specific electrical parameters: 50 V VCEO, 100 mA IC, 47 kΩ R1, and SOT-323 package compatibility.