DTC123YCA-HF

Overview

The DTC123YCA-HF is a digital transistor manufactured by Comchip Technology, classified as an NPN type with a maximum collector current of 100 mA and a collector-emitter voltage rating of 50 V. It integrates biasing resistors with values of 2.2 kΩ for the input resistor (R1) and 10 kΩ for the emitter-base resistor (R2). The component utilizes a SOT-23 surface-mount package and operates within a temperature range of -55°C to +150°C. Designed for standard applications, it features a power dissipation capacity of 200 mW and a DC current gain (hFE) of at least 33.

Feature Summary

• Integrates built-in biasing resistors to simplify circuit design by eliminating the need for external input resistors.
• Enables straightforward configuration of inverter circuits where only on/off conditions require setting.
• Provides complementary PNP type availability for balanced design requirements.

Applications

• Inverter circuits
• Interface logic circuits
• Driver applications

Procurement Notes

Verify the manufacturer designation carefully, as the DTC123YCA part number is primarily associated with Rohm Semiconductor. Confirm that the specific 'Comchip Technology' listing corresponds to the exact electrical specifications and pinout required for your design, ensuring no functional discrepancies exist between different manufacturers offering this identifier.

Selection Notes

Select this component when a compact NPN digital transistor solution is needed for low-current switching tasks. Ensure the application does not require automotive-grade qualification, as standard versions are typically designated for general-purpose use rather than high-reliability automotive environments.

Part Context

This device belongs to the family of digital transistors which combine a single transistor with integrated bias resistors. This integration reduces board space and simplifies schematic design compared to discrete resistor-transistor networks. The SOT-23 package offers a small footprint suitable for dense PCB layouts.

Replacement Considerations

Direct substitutes include DTC123Y from Rohm or equivalent NPN digital transistors with identical 2.2kΩ/10kΩ resistor ratios and SOT-23 packaging. Verify pin compatibility and thermal characteristics before substitution.