DTA144EBT2L

Overview

The DTA144EBT2L is a PNP digital transistor manufactured by ROHM Semiconductor, featuring built-in bias resistors within a compact SOT-323 (UMT3) surface-mount package. It operates with a collector-emitter voltage of -50 V and a continuous collector current of -100 mA. The device integrates a base resistor (R1) of 47 kΩ and an emitter-base resistor (R2) of 47 kΩ, providing a fixed resistance ratio of 1:1. Key electrical characteristics include a DC current gain (hFE) minimum of 68 at -5 mA and -5 V, a transition frequency of 250 MHz, and a power dissipation rating of 150 mW. The component supports a maximum operating temperature of +150°C.

Feature Summary

• Integrates dual bias resistors (R1 and R2) to simplify circuit design and reduce component count.
• Utilizes a small outline transistor package for efficient space-saving on printed circuit boards.
• Engineered for high-speed switching applications with a specified transition frequency of 250 MHz.

Applications

• General-purpose signal switching in consumer electronics.
• Driver circuits for logic level translation between microcontrollers and peripheral devices.
• Interface modules requiring compact PNP switching solutions.

Procurement Notes

Verify the specific suffix 'BT2L' against official ROHM documentation to confirm tape-and-reel packaging quantities and marking codes. Ensure compatibility with standard SMT reflow profiles and check for RoHS compliance status in the latest datasheet revision before finalizing procurement orders.

Selection Notes

Select this component when a PNP configuration with a 47kΩ input resistance is required. Compare the 150mW power dissipation limit against thermal constraints. Consider alternative packages like SOT-723 if higher current handling or different pinout geometry is needed for the target application layout.

Part Context

This part belongs to the DTA144 series of pre-biased transistors from ROHM. It shares functional similarities with variants such as DTA144EM and DTA144TU3 but differs in physical packaging dimensions and specific manufacturing lot markings associated with the UMT3/SOT-323 form factor.

Replacement Considerations

Direct substitutes may include DTA144EM or DTA144TU3, provided the package footprint matches the design. Verify that the replacement maintains the same 47kΩ/47kΩ resistor ratio and -50V voltage rating to ensure circuit functionality remains unchanged.