DTA144TT1

Overview

The DTA144TT1 is a PNP silicon Bias Resistor Transistor (BRT) from onsemi, housed in the SC-59 surface mount package. It integrates a single transistor with a monolithic bias network consisting of a series base resistor and a base-emitter resistor. Key electrical parameters include a maximum collector current of 100 mA, collector-emitter voltage of 50 Vdc, and total device dissipation of 230 mW at 25°C. The internal resistors are R1 = 47 kΩ and R2 = infinity. The device operates within a junction temperature range of -55 to +150 °C.

Feature Summary

• Integrates a single transistor with a monolithic bias network containing two resistors to replace individual components.
• SC-59 package features modified gull-winged leads designed to absorb thermal stress during soldering.
• Available in 8 mm embossed tape and reel packaging for automated assembly.

Applications

• Inverter circuits
• Interface circuits
• Driver circuits

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm shipping quantity and packaging type. Confirm that the component meets required environmental standards such as RoHS compliance before finalizing procurement specifications.

Selection Notes

Select this component when circuit design requires a PNP digital transistor with integrated biasing to reduce board space and component count. Ensure the application supports the SC-59 package dimensions and the specified 47 kΩ input resistance value.

Part Context

This part belongs to the DTA144 series of PNP silicon digital transistors manufactured by onsemi. These devices are classified as preferred choices for future use, offering best overall value and simplified circuit design through the integration of bias resistors.

Replacement Considerations

Check for alternative BRTs with identical pinouts and electrical characteristics if supply constraints exist. Verify that any substitute maintains the same SC-59 package footprint and resistor values to ensure compatibility.

FAQ

What is the function of the internal resistors in the DTA144TT1?

The device contains a monolithic bias network with a series base resistor (R1) and a base-emitter resistor (R2), eliminating the need for external discrete resistors.

How does the SC-59 package handle thermal stress?

The SC-59 package utilizes modified gull-winged leads that absorb thermal stress during the soldering process, protecting the die from damage.

What is the typical DC current gain (hFE) for this device?

The typical DC current gain is 350, measured at VCE = 10 V and IC = 5.0 mA.