DTB114EKT146

Overview

The DTB114EKT146 is a digital transistor manufactured by ROHM Semiconductor, featuring an NPN configuration within the DTD114EK series. It integrates bias resistors to facilitate simple on/off switching operations in digital circuits. The device supports a collector continuous current of 500 mA and operates with a maximum operating frequency of 200 MHz. Key electrical parameters include a typical input resistance of 10 kOhms, a DC collector/base gain (hfe) minimum of 56 at 50 mA and 5 V, and a power dissipation rating of 200 mW. It is housed in an SOT-346-3 surface-mount package.

Feature Summary

• Integrates built-in bias resistors for simplified digital circuit design
• Supports high-speed switching with a maximum operating frequency of 200 MHz
• Provides robust current handling capability up to 500 mA

Applications

• Digital interface circuits
• Driver applications requiring pre-biased switching
• General-purpose digital logic level translation

Procurement Notes

Verify component authenticity through authorized distribution channels or direct manufacturer confirmation. Ensure the specific suffix matches the required packaging format, such as reel or cut tape, as indicated in official ordering information. Cross-reference the full part number against current datasheets to confirm active status and compliance with relevant standards before finalizing procurement.

Selection Notes

Select this component when an NPN digital transistor with integrated biasing is required for medium-current applications. The 10 kOhm input resistance offers a standard impedance match for many logic families. Consider the SOT-346-3 package dimensions for PCB layout constraints and verify that the 200 MHz frequency response meets the system's switching speed requirements.

Part Context

This part belongs to the DTD114EK series of digital transistors from ROHM Semiconductor. These devices are designed to replace discrete resistor-transistor combinations, reducing board space and assembly complexity. The series typically includes variants with different resistor ratios, but this specific model features a 1:1 ratio configuration suitable for general-purpose switching tasks.

Replacement Considerations

Publicly confirmed substitute part numbers for DTB114EKT146 were not identified in the provided source material. Designers should consult official ROHM documentation or distributor databases for equivalent components with matching pinouts, electrical characteristics, and package types.