DTA144ECAT116

Overview

The DTA144ECAT116 is a single PNP digital transistor with built-in bias resistors, manufactured by Rohm Semiconductor. It features a collector-emitter voltage (Vceo) of 50 V and a continuous collector current (Ic) of 100 mA. The device includes two integrated resistors: R1 (base) and R2 (emitter), both valued at 47 kOhms. Key electrical parameters include a DC current gain (hFE) of at least 68 at 5 mA and 5 V, and a saturation voltage (Vce(sat)) of 300 mV maximum at 500 µA base current and 10 mA collector current. The transition frequency is 250 MHz, with a maximum power dissipation of 200 mW in the SST3 (SOT-23-3) surface-mount package.

Feature Summary

• Integrates dual bias resistors to simplify circuit design by eliminating external resistor requirements for inverter applications.
• Provides high-speed switching capability with a transition frequency of 250 MHz suitable for digital signal processing.
• Offers low saturation voltage to minimize power loss during conduction states.

Applications

• Inverter circuits
• Interface drivers
• Digital logic buffers

Procurement Notes

Verify the specific suffix CAT116 against the manufacturer's datasheet to confirm packaging details and marking codes. Ensure compatibility with standard SOT-23 footprint dimensions during PCB layout. Cross-reference RoHS compliance status with current regulatory requirements before finalizing component selection for production.

Selection Notes

Select this component when a PNP configuration with equal 47 kOhm bias resistors is required. Compare hFE minimums and Vce(sat) specifications against alternative manufacturers if tighter performance margins are needed. Verify thermal dissipation capabilities within the target enclosure environment to ensure operation remains within the 200 mW power limit.

Part Context

This part belongs to the DTx series of digital transistors from Rohm Semiconductor. The series combines bipolar junction transistors with internal biasing networks to reduce board space and assembly complexity. The DTA144 variant specifically denotes a PNP type with standardized resistor values, widely used in consumer electronics and industrial control systems.

Replacement Considerations

Publicly documented parameter-equivalent substitutes include DDTA144ECA-7-F from Diodes Incorporated and DTA144ECA-TP from MCC. Verify pinout compatibility and electrical tolerances before substitution.