DTD143EKFRAT146

Overview

The DTD143EKFRAT146 is a single NPN digital transistor manufactured by ROHM Semiconductor, designed for surface-mount applications in the SOT-346-3 package. It integrates bias resistors with a typical base resistance of 4.7 kOhms and an emitter-base resistance of 4.7 kOhms. The device supports a collector-emitter voltage (VCEO) of 50 V and a continuous collector current of 500 mA. Key electrical parameters include a minimum DC current gain (hFE) of 47 at 50 mA and 5 V, a transition frequency of 200 MHz, and a power dissipation rating of 200 mW. It operates within a temperature range up to +150°C and holds AEC-Q101 qualification.

Feature Summary

• Integrates built-in bias resistors to simplify circuit design by eliminating external resistor requirements.
• AEC-Q101 qualified for automotive reliability standards.
• High-speed switching capability with a transition frequency of 200 MHz.
• Compact SOT-346-3 surface-mount packaging for space-constrained designs.

Applications

• Automotive electronic systems requiring AEC-Q101 compliant components.
• General-purpose switching circuits in consumer electronics.
• Interface drivers for microcontrollers and logic gates.
• Level shifting applications in low-voltage digital circuits.

Procurement Notes

Verify the specific suffix FRAT146 against official ROHM documentation to confirm reel specifications and tape-and-reel dimensions. Ensure compatibility with automated pick-and-place equipment regarding the SOT-346-3 footprint. Confirm that the AEC-Q101 qualification meets the specific automotive grade requirements of the target application before finalizing procurement orders.

Selection Notes

Select this component when a single NPN digital transistor with integrated 4.7 kOhm bias resistors is required. Compare against the DTD143EKT146 if a different packaging option like SOT-346 without the specific FRAT146 tape configuration is needed. Consider the DTB143EKFRAT146 if a PNP polarity is required instead of NPN. Verify that the 500 mA current rating and 200 mW power dissipation are sufficient for the load conditions.

Part Context

This part belongs to the ROHM DTD143EK series of digital transistors. It shares core electrical characteristics with other variants in the series but differs in packaging and taping specifications defined by the FRAT146 suffix. It is distinct from the DTC143EK series which typically features lower current ratings or different resistance values.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Consult ROHM's official replacement guide or distributor cross-reference lists for verified equivalents.