DTA124XCAT116

Overview

The DTA124XCAT116 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 (R1) of 22 kOhms and an emitter-base resistance (R2) of 47 kOhms, yielding a resistor ratio of 2.1. Minimum DC current gain (hFE) is specified at 68 under test conditions of -5 mA and -5 V. Maximum power dissipation is 350 mW, with a maximum operating temperature of +150°C and a transition frequency of 250 MHz.

Feature Summary

• Integrates bias resistors to eliminate external components for inverter circuits
• Optimized for low-voltage operation with high-speed switching capabilities
• Designed for surface-mount assembly in compact electronic devices

Applications

• Inverter circuits for logic interfaces
• Driver circuits for small-signal applications
• Switching applications in portable consumer electronics

Procurement Notes

Verify the specific ordering code against the manufacturer's latest datasheet to ensure compatibility with required packaging formats such as cut tape or reel. Confirm RoHS compliance status and moisture sensitivity level prior to integration into production workflows. Cross-reference pinout configurations to prevent installation errors during surface-mount placement processes.

Selection Notes

Select this component for applications requiring a PNP digital transistor with integrated biasing in a compact SOT-23 form factor. Ensure the -50 V collector-emitter voltage rating aligns with the system's supply constraints. Verify that the 22 kOhm input resistance matches the driving source impedance requirements for the intended logic interface speed and power consumption targets.

Part Context

This part belongs to the ROHM DTx series of bias resistor built-in transistors. The 'X' suffix typically denotes specific internal resistor values, distinguishing it from variants like DTA123 or DTC124 which may have different resistance ratios or NPN polarity. The CAT116 suffix indicates the specific tape-and-reel packaging configuration used for automated assembly.

Replacement Considerations

Direct pin-compatible substitutes within the same family include DTA124ECA or DTA124XE3HZGTL, though verification of exact resistor values and voltage ratings is required. Alternative manufacturers offer similar PNP digital transistors in SOT-23 packages, but functional equivalence must be confirmed via detailed parameter comparison.