DTA124TCAT116

Overview

The DTA124TCAT116 is a single PNP digital transistor from the ROHM DTx series, housed in an SOT-23-3 surface-mount package. It integrates bias resistors to simplify circuit design. Key electrical parameters include a collector-emitter voltage (VCEO) of -50 V and a continuous collector current of -100 mA. The device features a typical input resistance of 22 kOhms with a resistor ratio of 2.1. It supports a maximum operating frequency of 250 MHz and has a power dissipation rating of 350 mW. The minimum DC current gain (hFE) is specified as 68 at -5 mA and -5 V, with a maximum operating temperature of +150°C.

Feature Summary

• Integrates internal bias resistors to eliminate external components for inverter circuits
• Optimized for high-speed switching applications with a 250 MHz transition frequency
• Designed for compact surface-mount assembly in space-constrained PCB layouts

Applications

• General-purpose signal inversion and logic level shifting
• Driver circuits for small-signal loads requiring pre-biased control
• High-frequency switching stages in consumer electronics

Procurement Notes

Verify the specific suffix CAT116 against the manufacturer's latest datasheet to confirm packaging details and RoHS compliance status. Ensure that the ordering quantity aligns with the standard factory reel size of 3000 units if bulk procurement is required. Cross-reference the part number with authorized distributors to confirm availability and lead times prior to finalizing purchase orders.

Selection Notes

Select this component when a PNP configuration with integrated biasing is required for low-current switching tasks. The 22 kOhm input resistance suits applications driven by standard logic outputs. Consider the -50 V voltage rating and -100 mA current limit to ensure operation within safe boundaries. Verify thermal management requirements given the 350 mW power dissipation capability in the SOT-23-3 package.

Part Context

This part belongs to the ROHM DTx series of digital transistors, which combine bipolar junction transistors with on-chip resistors. The DTA124TCA variant specifically denotes a PNP type with a 22 kOhm base resistor. The CAT116 suffix indicates the specific tape-and-reel packaging format used for automated surface-mount assembly processes.

Replacement Considerations

Direct pin-compatible substitutes within the same family include DTA123TCAT116 (2.2 kOhm resistor) or DTA125TCAT116 (47 kOhm resistor). For NPN equivalents, consider the DTC series such as DTC124TCAT116. Verify that alternative parts match the -50 V rating and SOT-23-3 footprint before integration.