DTC114EKAT146

Overview

The DTC114EKAT146 is a single NPN digital transistor manufactured by ROHM Semiconductor, housed in an SMT3 (SOT-23-3) surface-mount package. It integrates bias resistors with a typical input resistance of 10 kOhms and a typical resistor ratio of 1. The device supports a maximum collector-emitter voltage of 50 V and a continuous collector current of 50 mA. Key electrical parameters include a minimum DC current gain of 30 at 5 mA and 5 V, a transition frequency of 250 MHz, and a power dissipation rating of 200 mW. The component operates within a temperature range up to +150 C.

Feature Summary

• Integrates built-in bias resistors to simplify circuit design and reduce board space requirements.
• Provides high-speed switching capabilities suitable for interface and driver applications.
• Features low saturation voltage for efficient power management.

Applications

• Inverter circuits
• Interface logic drivers
• General-purpose switching applications

Procurement Notes

Verify the specific suffix AT146 to confirm the SMT3 tape-and-reel packaging configuration. Ensure compatibility with standard SMD/SMT assembly processes. Confirm RoHS compliance status through official manufacturer documentation before integration into regulated products.

Selection Notes

Select this component for designs requiring a compact NPN digital transistor with integrated base and emitter resistors. The 10 kOhm input resistance offers a balanced drive requirement. Consider the 50 mA current limit and 200 mW power dissipation when determining thermal management needs for the target application environment.

Part Context

This part belongs to the DTC114EK series of pre-biased transistors from ROHM Semiconductor. It serves as a standard discrete solution for replacing multiple discrete components, including a BJT and two resistors, into a single three-terminal package. The SMT3 footprint provides a small form factor compared to larger transistor packages.

Replacement Considerations

Direct substitutes may include other ROHM parts in the DTC114 family with different packaging or resistor values, such as DTC114EKA variants. Cross-manufacturer equivalents require verification of pinout, voltage ratings, and internal resistor ratios to ensure functional parity.