DTA144EE-TP

Overview

The DTA144EE-TP is a PNP digital transistor manufactured by Micro Commercial Components (MCC) in the SOT-523 surface-mount package. It integrates bias resistors to facilitate inverter circuit configurations without external components. Key electrical specifications include a maximum supply voltage of -50 V, a continuous collector current of -100 mA, and a power dissipation rating of 150 mW at 25°C. The device features a typical input resistance (R1) of 47 kΩ with a resistance ratio (R2/R1) of 1.0. It operates within a junction temperature range up to 150°C and offers a transition frequency of 250 MHz.

Feature Summary

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

Applications

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

Procurement Notes

Verify authenticity through authorized MCC distributors or direct purchase from Micro Commercial Components Corp. to avoid counterfeit parts. Ensure the ordering suffix matches the required packaging format, as the standard tape and reel contains 3000 pieces per reel. Confirm compliance with specific environmental requirements such as halogen-free status during the sourcing process.

Selection Notes

Select this component when a compact PNP digital transistor with integrated biasing is required for space-constrained designs. The SOT-523 package suits high-density PCB layouts. Verify that the -50 V supply voltage and -100 mA current ratings align with the target application's load requirements. Consider the 47 kΩ input resistance value for appropriate base drive calculations.

Part Context

This part belongs to the DTA series of pre-biased transistors from Micro Commercial Components. These devices combine NPN or PNP transistors with internal bias resistors to simplify circuit design. The DTA144EE specifically utilizes the SOT-523 footprint, offering a smaller alternative to larger packages like SOT-23 while maintaining similar functional characteristics for general-purpose switching.

Replacement Considerations

Check datasheets for equivalent PNP digital transistors in the SOT-523 package with comparable -50 V ratings and ~47 kΩ input resistance. Verify pinout compatibility (IN, OUT, GND) before substitution. Ensure thermal performance and current handling capabilities meet or exceed the original specifications.

FAQ

What is the function of the internal resistors in the DTA144EE?

The internal resistors are built-in bias resistors that allow the device to function as an inverter circuit without requiring external input resistors, simplifying the design and reducing board space.

What is the maximum supply voltage for the DTA144EE?

The maximum supply voltage (VCC) for the DTA144EE is -50 V.

Does the DTA144EE support negative biasing?

Yes, the bias resistors consist of thin-film resistors with complete isolation, which allows for the negative biasing of the input.