DTC144TU3T106

Overview

The DTC144TU3T106 is a single NPN digital transistor manufactured by ROHM Semiconductor, housed in an SOT-323-3 surface-mount package. It integrates a bias resistor network with a typical input resistance of 47 kOhms. The device supports a collector-emitter voltage of 50 V and a continuous collector current of 100 mA. Key electrical characteristics include a minimum DC current gain (hFE) of 100 at 1 mA and 5 V, and a maximum operating frequency of 250 MHz. Power dissipation is rated at 200 mW, with a maximum operating temperature of +150 C and an emitter-base voltage of 5 V.

Feature Summary

• Integrates a single bias resistor to simplify circuit design
• Optimized for high-speed switching applications up to 250 MHz
• Designed for low-power consumption with 200 mW power dissipation

Applications

• General-purpose signal switching
• Driver circuits for small loads
• Logic level translation interfaces

Procurement Notes

Verify the specific suffix TU3T106 against the manufacturer's latest datasheet to confirm packaging details and revision status. Ensure compatibility with SOT-323-3 footprint requirements during PCB layout. Confirm RoHS compliance documentation is available for regulatory adherence. Check for any obsolescence notices or lifecycle changes directly from ROHM Semiconductor before finalizing procurement plans.

Selection Notes

Select this component when a single NPN digital transistor with a 47 kOhm base resistor is required in a compact SOT-323-3 package. It is suitable for applications needing a 50 V collector-emitter rating and 100 mA current capacity. Consider the hFE minimum of 100 for gain requirements. Compare against other DTC144 variants if different resistor values or packages like SOT-23 are needed.

Part Context

This part belongs to the ROHM DTC144 series of Bias Resistor Built-in Transistors (BRBTs). These devices combine a single bipolar transistor with a built-in resistor to reduce board space and assembly costs. The TU3 designation indicates the SOT-323-3 package type. This series is widely used in portable electronics and consumer appliances where space efficiency is critical.

Replacement Considerations

Direct substitutes within the same family include DTC144EU3HZGT106 and DTC144GUAT106, though they may differ in gain or package. Verify pinout compatibility and electrical ratings before substitution. Cross-reference with other manufacturers' NPN digital transistors only if specifications match exactly.