DTC144EBT2L

Overview

The DTC144EBT2L is an NPN digital transistor manufactured by ROHM Semiconductor, featuring built-in bias resistors in a compact surface-mount package. It operates with a collector-emitter voltage of 50 V and supports a continuous collector current of 100 mA. The device integrates two 47 kΩ resistors with a ratio of 1, eliminating the need for external input components. Key electrical parameters include a minimum DC current gain (hFE) of 68 at 5 mA and 5 V, a maximum operating frequency of 250 MHz, and a power dissipation rating of 150 mW. It functions reliably up to a maximum junction temperature of +150 °C.

Feature Summary

• Integrates thin-film bias resistors for simplified circuit design without external input components
• Provides complete isolation between resistors to allow negative input biasing
• Minimizes parasitic effects through integrated resistor architecture

Applications

• Inverter circuits
• Driver applications
• Interface logic

Procurement Notes

Verify the specific suffix BT2L against official ROHM documentation to confirm the exact tape-and-reel quantity and packaging configuration. Ensure the component meets RoHS compliance requirements for the target assembly process. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm active status and availability before finalizing procurement plans.

Selection Notes

Select this component when a single NPN digital transistor with 47 kΩ base resistors is required for low-power switching or logic inversion. The 150 mW power dissipation and 50 V rating suit general-purpose signal processing. Verify that the SOT-323FL footprint matches the PCB layout constraints and that the 250 MHz frequency response aligns with the application speed requirements.

Part Context

This part belongs to the ROHM DTC144 series of Bias Resistor Built-in Transistors (BRBTs). The series offers various packages and resistance values to accommodate different design needs. The DTC144EBT2L specifically utilizes the BT2L package variant, providing a small form factor suitable for space-constrained consumer and industrial electronics designs requiring reliable NPN switching.

Replacement Considerations

Check for direct pin-compatible alternatives within the same ROHM series, such as DTC144EUBTL or DTC144EE3TL, ensuring identical electrical ratings and package dimensions. Verify that any substitute maintains the same 47 kΩ resistor ratio and hFE characteristics to ensure circuit compatibility.