DTC143TUBTL

Overview

The DTC143TUBTL is a single NPN digital transistor manufactured by ROHM Semiconductor. It features an integrated bias resistor network with a resistance value of 4.7 kΩ, eliminating the need for external base components. The device supports a collector-emitter voltage (Vceo) of 50 V and a continuous collector current (Ic) of 100 mA. It operates within a power dissipation limit of 200 mW and offers a maximum operating frequency of 250 MHz. The component is housed in a compact SOT-323FL surface-mount package, designed for efficient space utilization in modern electronic circuits.

Feature Summary

• Integrates a 4.7 kΩ bias resistor directly with the NPN transistor to simplify circuit design
• Provides high-speed switching capability with a maximum operating frequency of 250 MHz
• Delivers reliable performance with a 50 V collector-emitter voltage rating
• Utilizes a compact SOT-323FL surface-mount package for automated assembly

Applications

• General-purpose digital switching circuits
• Interface driver applications
• Logic level translation stages
• Inverter control circuits

Procurement Notes

Verify the specific suffix 'BTL' against the official ROHM datasheet to confirm the exact tape-and-reel packaging configuration and quantity per reel. Ensure the procurement source provides valid traceability documentation. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm availability and authenticity before finalizing orders.

Selection Notes

Select this component when a pre-biased NPN solution is required for space-constrained designs. The integrated 4.7 kΩ resistor simplifies layout compared to discrete transistor-resistor combinations. Consider the 200 mW power dissipation limit and 250 MHz frequency response to ensure compatibility with the target application's thermal and speed requirements.

Part Context

This component belongs to the DTC series of digital transistors from ROHM Semiconductor. These devices combine bipolar junction transistors with internal bias resistors to reduce board space and component count. The DTC143TUBTL specifically utilizes the SOT-323FL package, offering a smaller footprint than standard SOT-23 variants while maintaining similar electrical characteristics for general-purpose switching.

Replacement Considerations

Compatible substitutes include other NPN digital transistors with 50 V rating, 100 mA current, and 4.7 kΩ internal resistance in SOT-323 packages. Verify pinout compatibility and thermal performance before substitution.