DTA123JUBTL

Overview

The DTA123JUBTL is a digital transistor with built-in resistors manufactured by Rohm Semiconductor. It features an NPN polarity configuration housed in a UMT3F (SOT-323FL) surface-mount package. Key electrical parameters include a collector current of 0.1 A, a supply voltage of 50 V, and power dissipation of 0.2 W. The device incorporates input resistance (R1) ranging from 1 kΩ to 2.2 kΩ and emitter-base resistance (R2) from 1 kΩ to 47 kΩ. It operates within a storage temperature range of -55°C to 150°C and complies with RoHS standards.

Feature Summary

• Built-in biasing resistors enable inverter circuit configuration without external input resistors.
• Simplified circuit design requiring only on/off condition settings for operation.
• Compact surface-mount packaging suitable for space-constrained applications.

Applications

• General-purpose switching circuits
• Inverter logic configurations
• Digital signal processing interfaces

Procurement Notes

Verify the specific ordering suffix and package variant against official Rohm documentation before procurement. Confirm that the component meets the required environmental standards and that the supplier provides valid traceability records. Ensure compatibility with existing assembly processes and validate that the part status remains recommended for new designs.

Selection Notes

Select this component when an NPN digital transistor with integrated biasing is required for compact designs. Consider the specific resistance values of R1 and R2 to match the target logic levels and drive requirements. Verify that the UMT3F package dimensions align with the PCB footprint constraints and thermal management needs of the application.

Part Context

The DTA123JUBTL belongs to Rohm's standard digital transistor series, which integrates bipolar junction transistors with pre-biased resistors. This family simplifies circuit design by reducing component count and board space. The device is categorized as a standard-grade product intended for general electronic equipment rather than automotive or critical safety systems.

Replacement Considerations

The DTA123JU3 is listed as a similar specification replacement with a UMT3 package. Verify pinout compatibility and exact resistance tolerances before substitution. Ensure the alternative package size fits the existing footprint without mechanical interference.