DTC124ECA-TP

Overview

The DTC124ECA-TP is an NPN digital transistor in a SOT-23 package, manufactured by Micro Commercial Components (MCC). It integrates bias resistors to simplify circuit design. Key electrical parameters include a maximum collector-emitter voltage of 50V and a continuous collector current of 30mA, with a peak DC collector current rating of 100mA. The device features a typical transition frequency of 250MHz and a minimum DC current gain of 56. Internal resistors R1 and R2 are typically 22kΩ each, providing a resistance ratio of 1. Power dissipation is rated at 200mW, operating within a temperature range of -55°C to +150°C.

Feature Summary

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

Applications

• Inverter circuits
• Driver circuits for relays and solenoids
• Switching applications

Procurement Notes

Verify the authenticity of the DTC124ECA-TP component through authorized MCC distributors or direct procurement channels. Counterfeit semiconductor parts pose significant risks; ensure traceability and adherence to MCC quality standards. Confirm that the ordering suffix '-TP' corresponds to the Tape & Reel packaging format containing 3000 pieces per reel as specified in official documentation.

Selection Notes

Select the DTC124ECA-TP when a compact NPN switching solution with integrated biasing is required. The SOT-23 package suits surface-mount applications with space constraints. Ensure the design accounts for the 30mA continuous collector current limit and 200mW power dissipation. Verify compatibility with the 22kΩ internal resistor values for proper logic level interfacing.

Part Context

The DTC124ECA belongs to the DTC124 series of single NPN digital transistors. This series is designed to replace discrete resistor-transistor combinations, reducing board space and assembly costs. The device marking for this component is '25'. It is part of MCC's portfolio of pre-biased transistors intended for general-purpose switching and logic interface tasks.

Replacement Considerations

Check pinout compatibility and electrical ratings against potential substitutes. Verify if alternative components offer similar internal resistor ratios and transition frequencies. Ensure any replacement maintains the SOT-23 form factor and meets the required voltage and current specifications for the specific application.

FAQ

What is the function of the internal resistors in the DTC124ECA?

The internal resistors (R1 and R2) act as bias resistors, allowing the transistor to be configured as an inverter without requiring external input resistors. They also facilitate negative biasing of the input.

What is the typical value of the base resistor R1?

The typical value of the base resistor R1 is 22 kΩ, with a range from 15.4 kΩ to 28.6 kΩ.

Can the DTC124ECA handle negative input voltages?

Yes, the built-in thin-film resistors provide complete isolation, allowing for the negative biasing of the input terminal.