DTC124TETL

Overview

The DTC124TETL is an NPN digital transistor manufactured by Rohm Semiconductor, featuring built-in biasing resistors to simplify circuit design. It operates with a collector-emitter voltage of 50V and a continuous collector current of 100mA. The device incorporates an input resistance (R1) of 22kΩ and an emitter-base resistance (R2) of 47kΩ. Key electrical characteristics include a DC current gain (hFE) of at least 68 and a transition frequency of 250MHz. Power dissipation is rated at 150mW. The component is housed in the EMT3 surface-mount package, measuring 1.6x1.6mm with a thickness of 0.85mm, suitable for compact electronic applications.

Feature Summary

• Integrated biasing resistors eliminate the need for external input components, enabling straightforward inverter circuit configuration.
• High-speed switching capability supported by a 250MHz transition frequency for efficient signal processing.
• Compact EMT3 surface-mount package design facilitates automated assembly and space-constrained layouts.

Applications

• Inverter circuits requiring simplified input stages
• Interface driving for logic level translation
• General-purpose switching applications in consumer electronics

Procurement Notes

Verify the specific ordering suffix to confirm packaging details such as tape and reel quantity. Ensure compatibility with RoHS directives if required by the target market. Confirm that the standard grade classification meets the reliability requirements for the intended application environment, noting any restrictions regarding automotive use if applicable.

Selection Notes

Select this component when a pre-biased NPN transistor is needed to reduce board space and component count. Compare R1 and R2 values against other variants like the DTC124X series to ensure proper base drive matching. Consider the 150mW power dissipation limit and thermal management requirements for the specific PCB layout and ambient operating conditions.

Part Context

This part belongs to the DTC124 series of digital transistors from Rohm Semiconductor. It serves as a standard-grade discrete solution for integrating amplification and biasing functions into a single small package. The series offers complementary PNP options, such as the DTA124TUAT106, for push-pull or differential configurations.

Replacement Considerations

The DTC124XEFRATL is a confirmed substitute within the same family, offering identical pinout and package dimensions. Verify that the replacement variant maintains the required 22kΩ/47kΩ resistor ratio and meets the 100mA current rating for direct interchangeability.