DTC144GKAT146

Overview

The DTC144GKAT146 is an NPN digital transistor manufactured by ROHM Semiconductor, belonging to the DTC144G series. It features a built-in potential divider bias resistor configuration with a typical input resistance of 47 kOhms and a resistor ratio of 1. The device is housed in a UMT3 (SOT-328) surface-mount package. Key electrical specifications include a maximum collector-emitter voltage (VCEO) of 50 V, a continuous collector current of 100 mA, and a power dissipation rating of 200 mW. It supports a maximum operating frequency of 250 MHz and operates within a temperature range up to +150°C.

Feature Summary

• Integrates bias resistors to simplify circuit design by eliminating external components
• Provides high-speed switching capabilities suitable for digital logic applications
• Offers compact surface-mount packaging for space-constrained designs

Applications

• General-purpose digital switching circuits
• Logic level translation interfaces
• Driver circuits for small-signal loads

Procurement Notes

Verify component status carefully as this specific part number may be designated as not recommended for new designs. Confirm availability through authorized distributors and check for end-of-life notifications. Ensure that the UMT3 package dimensions align with existing PCB footprints before finalizing procurement plans.

Selection Notes

Select this component when a single NPN digital transistor with integrated biasing is required. The 47 kOhm input resistance suits standard logic interface applications. Consider alternative packages like SOT-323 or SOT-23 if different form factors are needed, while maintaining similar electrical characteristics such as 50 V VCEO and 100 mA IC ratings.

Part Context

This component belongs to the DTC144G series of pre-biased transistors from ROHM Semiconductor. These devices combine an NPN bipolar transistor with internal bias resistors to reduce board space and assembly complexity. The series offers various package options including SOT-23, SOT-323, and UMT3, catering to diverse size and performance requirements in consumer and industrial electronics.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult official ROHM resources or distributor cross-reference tools for compatible alternatives.