TDTC144E,LM

Overview

The TDTC144E is a silicon NPN epitaxial type digital transistor manufactured by Toshiba Electronic Devices & Storage Corporation. It integrates bias resistors to simplify circuit design and reduce component count. The device operates with a supply voltage of 50 V and supports an output current of 100 mA. Key electrical parameters include an input resistance (R1) of 47 kΩ, a DC current gain (GI) ranging from 77 to 61.1, and a transition frequency (fT) between 250 MHz and 500 MHz. Power dissipation is rated at 320 mW, with a junction temperature limit of 150 °C. It is housed in an SOT-23 package.

Feature Summary

• Integrated bias resistor reduces the number of external parts required, enabling system size reduction and assembly time savings.
• Complementary PNP type available as TDTA144E for paired circuit applications.

Applications

• Switching circuits
• Inverter circuits
• Driver circuits

Procurement Notes

Verify the specific ordering suffix and packaging configuration directly with authorized distributors or the manufacturer before purchase. Confirm that the component meets all necessary environmental compliance standards, such as RoHS, for the intended deployment region. Ensure that the supply chain source is reputable to guarantee product authenticity and traceability throughout the manufacturing process.

Selection Notes

Select this component when a compact NPN digital transistor with integrated biasing is required for switching or driver applications. Consider the 47 kΩ input resistance and 50 V supply voltage rating to ensure compatibility with the target logic levels and power constraints. Verify that the SOT-23 package dimensions fit within the available PCB space constraints.

Part Context

This component belongs to the series of pre-biased bipolar transistors designed to replace discrete resistor-transistor combinations. It simplifies the design of interface and driver stages by providing a single solution for signal inversion and amplification. The standard pinout facilitates easy integration into existing board layouts without requiring significant redesign.

Replacement Considerations

The complementary PNP version is the TDTA144E. For direct replacement, verify that the substitute part matches the SOT-23 package, 50 V supply voltage, and similar input resistance values to maintain circuit performance integrity.

FAQ

What is the typical value of the input resistance?

The typical input resistance (R1) is 47 kΩ.

What is the maximum power dissipation rating?

The maximum power dissipation (PD) is 320 mW.

Is there a complementary PNP type available?

Yes, the complementary PNP type is the TDTA144E.