DTA144EMT2L

Overview

The DTA144EMT2L is a PNP digital transistor manufactured by ROHM Semiconductor, featuring built-in bias resistors to simplify circuit design. It operates with a maximum collector-emitter voltage of -50 V and a continuous collector current of -100 mA. The device includes an input resistor (R1) and an emitter-base resistor (R2), both typically valued at 47 kOhms, resulting in a resistance ratio of 1. Key electrical characteristics include a minimum DC current gain (hFE) of 68 at -5 mA and -5 V, and a maximum operating frequency of 250 MHz. Power dissipation is rated at 150 mW, with a maximum junction temperature of +150°C. The component is housed in a compact SOT-723 (VMT3) surface-mount package.

Feature Summary

• Integrates pre-biased resistors to enable inverter circuit configuration without external components
• Optimized for high-speed switching applications with a 250 MHz transition frequency
• Designed for surface-mount assembly in space-constrained environments

Applications

• General-purpose logic level shifting and signal inversion
• Driver circuits for small-signal loads and relays
• Interface circuits between microcontrollers and peripheral devices

Procurement Notes

Verify the specific suffix 'T2L' against the manufacturer's official datasheet to confirm packaging details and tape-and-reel specifications. Ensure that the ordering information matches the exact RoHS compliance status and automotive qualification requirements if applicable to the target application. Cross-reference the part number with authorized distributors to confirm availability and authenticity.

Selection Notes

Select this component when a PNP digital transistor with equal bias resistors (R1=R2=47kΩ) is required. Consider the -50 V voltage rating and -100 mA current limit for load compatibility. The SOT-723 package is suitable for high-density PCB layouts. Verify thermal management needs against the 150 mW power dissipation rating under expected operating conditions.

Part Context

This part belongs to the ROHM DTx series of digital transistors, which integrate bipolar junction transistors with built-in biasing resistors. The series offers various configurations and resistance values to accommodate different logic families and drive requirements. The DTA144EMT2L specifically provides a standard 47 kΩ resistor configuration for general-purpose switching applications.

Replacement Considerations

Compatible substitutes include other PNP digital transistors with similar electrical ratings and built-in 47 kΩ resistors, such as those from ON Semiconductor or Diodes Inc., provided they fit within the SOT-723 footprint and meet the -50 V / -100 mA specifications.