DTA144TCAT116

Overview

The DTA144TCAT116 is a single PNP digital transistor from the ROHM DTx series, housed in an SOT-23-3 (SST3) surface-mount package. It integrates bias resistors to simplify circuit design. Key electrical parameters include a collector-emitter voltage of -50 V and a continuous collector current of -100 mA. The device features a typical base input resistance of 47 kOhms with a resistor ratio of 1. It supports a maximum operating frequency of 250 MHz and has a power dissipation rating of 350 mW. The DC current gain is specified at a minimum of 100 under standard test conditions.

Feature Summary

• Integrates built-in biasing resistors to eliminate external components for basic switching applications.
• Designed for high-speed operation with a transition frequency up to 250 MHz.
• Utilizes a compact SOT-23-3 surface-mount package for efficient PCB space utilization.

Applications

• General-purpose signal inversion and buffering in digital logic circuits.
• Switching applications for low-power loads in consumer electronics.
• Interface circuits between microcontrollers and peripheral devices requiring level shifting or isolation.

Procurement Notes

Verify the specific suffix CAT116 to confirm the tape-and-reel packaging configuration and quantity per reel. Ensure compatibility with RoHS directives if required by the target market regulations. Cross-reference the manufacturer's latest datasheet for any updates on recommended soldering profiles and moisture sensitivity levels prior to assembly.

Selection Notes

Select this component when a PNP configuration with a 47 kOhm base resistor is required. Compare against alternative resistor ratios if different drive currents are needed. Consider the 350 mW power dissipation limit relative to the expected thermal environment and duty cycle of the application to ensure reliable long-term operation within specified temperature ranges.

Part Context

This part belongs to the ROHM DTx series of Digital Transistors with Built-in Resistors. These devices combine a single bipolar transistor with internal biasing networks to reduce board space and assembly costs. The DTA144TCA variant specifically denotes the PNP polarity with a 47 kOhm base resistor value, standardized across the family for consistent performance characteristics.

Replacement Considerations

Publicly confirmed substitute part numbers were not identified in the provided source material. Verify pinout compatibility and electrical parameter equivalence before considering any third-party alternatives.