DTA123JUAT106

Overview

The DTA123JUAT106 is a PNP digital transistor manufactured by ROHM Semiconductor, featuring built-in bias resistors within a UMT3 (SOT-323) surface-mount package. It operates with a collector-emitter voltage of -50 V and a continuous collector current of -100 mA. The device includes an internal base resistor (R1) of 2.2 kΩ and an emitter-base resistor (R2) of 47 kΩ. Key electrical characteristics include a transition frequency of 250 MHz, a maximum power dissipation of 200 mW, and a DC current gain (hFE) of at least 100 at -1 mA and -5 V. The component is AEC-Q101 qualified for automotive applications.

Feature Summary

• Integrates base and emitter bias resistors to simplify circuit design and reduce board space.
• AEC-Q101 qualified for reliability in automotive electronic environments.
• High-speed switching capability supported by a 250 MHz transition frequency.

Applications

• Automotive interface circuits requiring level shifting or signal buffering.
• Driver circuits for low-current loads in vehicle control modules.
• Logic level translation between microcontrollers and peripheral devices.

Procurement Notes

Verify the specific suffix AT106 against the official ROHM datasheet to confirm tape-and-reel packaging specifications and marking codes. Ensure the procurement channel provides traceability documentation required for AEC-Q101 qualified components. Confirm that the received parts match the exact ordering code to avoid substitution errors in automotive-grade assemblies.

Selection Notes

Select this component when a compact PNP digital transistor with integrated biasing is required for automotive applications. The UMT3 package suits high-density PCB layouts. Compare the 2.2 kΩ input resistance and 47 kΩ emitter-base resistance against circuit requirements to ensure proper drive current and leakage performance. Verify thermal constraints align with the 200 mW power dissipation rating.

Part Context

This part belongs to the ROHM DTA123 series of pre-biased NPN/PNP transistors designed for replacing discrete resistor-transistor combinations. The JUAT106 designation specifies the PNP polarity, UMT3 package, and specific taping configuration. It serves as a direct replacement for standard discrete BJT configurations where space saving and simplified biasing are priorities.

Replacement Considerations

DTA123JU3HZGTL is a similar pinout and package alternative within the same family. DTA123JUA is the non-taped version of the same device but is not recommended for new designs.