TDTC124E,LM

Overview

The TDTC124E 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, with a power dissipation rating of 320 mW. Key electrical parameters include an input resistance (R1) of 22 kΩ, a resistance ratio (R2/R1) of 1.0, and a transition frequency (fT) of 250 MHz. The DC current gain (GI) is typically 49 at 5 mA collector current. It is housed in an SOT-23 package.

Feature Summary

• Integrated bias resistors reduce the number of external parts required, enabling system size reduction and assembly time savings.
• Complementary PNP type available as TDTA124E for paired applications.

Applications

• Switching
• Inverter Circuits
• Driver Circuits

Procurement Notes

Verify the specific ordering suffix and packaging configuration directly with Toshiba Electronic Devices & Storage Corporation or authorized distributors before procurement. Confirm that the selected variant meets all necessary environmental compliance standards, such as RoHS, for the intended application. Ensure that the final product design adheres to the reliability guidelines outlined in the Toshiba Semiconductor Reliability Handbook.

Selection Notes

Select the TDTC124E when a compact NPN digital transistor with integrated biasing is required for switching or driver circuits. The 22 kΩ input resistor value suits standard logic interface levels. Consider the complementary TDTA124E if a matched PNP counterpart is needed. Verify that the 320 mW power dissipation and 50 V supply voltage ratings align with the maximum operating conditions of the target system.

Part Context

The TDTC124E belongs to the TDTC series of digital transistors from Toshiba Electronic Devices & Storage Corporation. This series combines bipolar transistors with built-in bias resistors to streamline circuit design. The component was introduced to commercial production in February 2016. It serves as a standard discrete solution for replacing multiple discrete components in low-power switching and signal inversion applications.

Replacement Considerations

The datasheet identifies the TDTA124E as the complementary part. No other direct replacement part numbers are explicitly listed in the provided documentation. Designers should verify pinout compatibility and electrical parameter equivalence when considering alternative manufacturers' equivalents.