DTD543EE3TL

Overview

The DTD543EE3TL is an NPN digital transistor manufactured by ROHM Semiconductor, featuring built-in bias resistors in a compact SOT-416 (EMT3) surface-mount package. It integrates two 4.7 kΩ resistors with a ratio of 1:1 to simplify circuit design by eliminating external input components. Key electrical specifications include a maximum collector-emitter voltage (VCEO) of 50 V, a continuous collector current of 500 mA, and a DC current gain (hFE) minimum of 115 at 100 mA. The device supports a maximum operating frequency of 260 MHz and operates within a temperature range of -55°C to +150°C, with a power dissipation rating of 150 mW.

Feature Summary

• Integrates dual 4.7 kΩ bias resistors with a 1:1 ratio for simplified inverter circuit configuration without external input resistors.
• High-speed switching capability with a maximum operating frequency of 260 MHz suitable for digital logic applications.
• Compact SOT-416 surface-mount package designed for space-constrained PCB layouts.

Applications

• Inverter circuits requiring simplified input stages
• Digital logic interface buffers
• General-purpose switching applications

Procurement Notes

Verify the specific ordering suffix EE3TL against the manufacturer's latest datasheet to confirm pinout compatibility and RoHS status. Confirm that the component is not designated for automotive use if the application requires AEC-Q101 qualification. Ensure the reel or cut-tape packaging matches the assembly line requirements.

Selection Notes

Select this component when an NPN digital transistor with 50 V VCEO and 500 mA Ic is required. The integrated 4.7 kΩ resistor pair is optimal for standard TTL/CMOS logic levels. Consider the complementary PNP type DTA143E series if a negative logic solution is needed. Verify thermal management capabilities given the 150 mW power dissipation limit in the small SOT-416 package.

Part Context

The DTD543EE3TL belongs to ROHM's standard series of Bias Resistor Built-in Transistors (BRBTs). It is functionally related to the DTC143EE3 and DTC144EE models, sharing similar internal architectures but differing in specific electrical ratings or resistor values. This part is distinct from power transistors like the 2SCR542F3 and voltage regulators such as the BD54FA1FP3.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult ROHM's official cross-reference tools for compatible alternatives.