DTC125TUAT106

Overview

The DTC125TUAT106 is a single NPN digital transistor manufactured by ROHM Semiconductor, housed in an SOT-323-3 surface-mount package. It features a built-in input resistor with a typical value of 200 kOhms. The device supports a maximum collector-emitter voltage (VCEO) of 50 V and a continuous collector current of 100 mA. Key electrical parameters include a minimum DC current gain (hFE) of 100 at 1 mA and 5 V, a maximum operating frequency of 250 MHz, and a power dissipation rating of 200 mW. The emitter-base voltage (VEBO) is rated at 5 V, and the component operates within a temperature range up to +150 C.

Feature Summary

• Integrates a bias resistor directly with the NPN transistor to simplify circuit design.
• Utilizes a compact SOT-323-3 surface-mount package for space-constrained applications.
• Designed for high-speed switching operations with a maximum frequency of 250 MHz.

Applications

• General-purpose signal switching in consumer electronics.
• Interface circuits between microcontrollers and peripheral devices.
• Level shifting and buffer stages in low-power digital logic systems.

Procurement Notes

Verify the current lifecycle status before integration, as this component is marked as Not Recommended for New Designs (NRND). Confirm availability through authorized distributors, noting that supply may be limited to existing customer support. Ensure compliance with RoHS directives and check for alternative lead times if immediate procurement is required for production runs.

Selection Notes

Select this component when a pre-biased NPN transistor with a high input resistance (200 kOhms) is required. Compare against similar models like the DTC124TUA if lower input resistance is needed. Consider the SOT-323-3 footprint constraints and verify that the 50 V voltage rating meets the specific circuit requirements. Evaluate thermal management needs given the 200 mW power dissipation limit.

Part Context

This part belongs to the DTC125TUA series of digital transistors from ROHM Semiconductor. It shares the same core specifications as the DTC125TUA but includes specific taping and packaging identifiers. The series represents standard digital transistors designed for replacing discrete resistor-transistor combinations in modern electronic assemblies.

Replacement Considerations

Publicly confirmed substitute part numbers are not explicitly listed in the provided documentation. Engineers should consult official ROHM resources or distributor cross-reference tools for compatible alternatives, keeping in mind the NRND status which may necessitate designing around available stock or newer equivalents.