DTA123JCAT116

Overview

The DTA123JCAT116 is a PNP bias resistor built-in transistor manufactured by ROHM Semiconductor. It integrates a single PNP transistor with internal bias resistors in an SOT-23-3 surface-mount package. Key electrical parameters include a maximum collector-emitter voltage (VCEO) of -50 V, a continuous collector current of -100 mA, and a power dissipation rating of 350 mW. The typical input resistance (R1) is 2.2 kOhms, with a typical resistor ratio of 21. The device features a minimum DC current gain (hfe) of 80 at -10 mA and -5 V, and supports a maximum operating frequency of 250 MHz. It is qualified under AEC-Q101 standards for automotive applications.

Feature Summary

• Integrates PNP transistor with built-in bias resistors to simplify circuit design
• AEC-Q101 qualified for automotive reliability requirements
• Leak absorption type configuration for enhanced noise immunity

Applications

• Inverter circuits requiring simplified input stages
• Automotive digital logic interfaces
• General-purpose switching applications in consumer electronics

Procurement Notes

Verify the specific suffix CAHZGT116 against standard CAAT116 variants if leak absorption is required. Confirm AEC-Q101 qualification status for automotive designs. Check RoHS compliance details on the official datasheet. Ensure SOT-23-3 footprint compatibility during PCB layout. Validate supply chain authenticity through authorized ROHM distributors.

Selection Notes

Select this component when a PNP digital transistor with 2.2 kOhm input resistance is needed. Compare hfe values against other DTA123 variants like DTA123TCA or DTA123ECA based on gain requirements. Consider the -50 V VCEO limit for voltage headroom. Evaluate thermal performance within the 350 mW dissipation constraint. Verify package size constraints against available SOT-23-3 land patterns.

Part Context

This part belongs to the ROHM DTx series of bias resistor built-in transistors. It shares the SOT-23-3 package form factor with other DTA123 variants but differs in internal resistor ratios and gain characteristics. The series is designed to replace discrete resistor-transistor combinations, reducing board space and assembly complexity.

Replacement Considerations

DTA123TCA offers similar functionality with different gain specifications. DTA123ECA provides alternative resistor ratios. Verify pinout compatibility and electrical parameter overlaps before substitution.