DTC115EKAT146

Overview

The DTC115EKAT146 is a single NPN digital transistor manufactured by ROHM Semiconductor, housed in an SOT-346-3 surface-mount package. It integrates built-in bias resistors with a typical input resistance of 100 kOhms and a resistor ratio of 1. The device supports a maximum collector-emitter voltage (VCEO) of 50 V and a continuous collector current of 100 mA. Key electrical parameters include a minimum DC current gain (hFE) of 82 at 5 mA and 5 V, a maximum operating frequency of 250 MHz, and a power dissipation rating of 200 mW. The component operates within a temperature range up to +150°C and features a 3 V emitter-base voltage.

Feature Summary

• Integrates built-in bias resistors to simplify circuit design by eliminating the need for external input resistors.
• Configured as a single NPN unit suitable for inverter circuits where only on/off conditions require setting.
• Utilizes a compact SOT-346-3 surface-mount package for efficient space utilization.

Applications

• Inverter circuits
• Interface applications

Procurement Notes

Verify the specific suffix AT146 against the manufacturer's official datasheet to confirm packaging details and tape-and-reel specifications. Ensure compliance with RoHS directives and check for any automotive qualification requirements if intended for vehicle-mounted equipment, as standard grades may have usage restrictions in such environments.

Selection Notes

Select this component when a single NPN digital transistor with high input impedance is required. The 100 kOhm input resistance and 1:1 resistor ratio are suitable for general-purpose switching. Compare the 100 mA current capacity and 200 mW power dissipation against load requirements. Consider alternative packages like SOT-416 or SOT-323 if form factor constraints differ.

Part Context

This part belongs to the DTC115EKA series of standard digital transistors from ROHM. It shares characteristics with other variants in the family, such as DTC115EE and DTC115UB, which differ primarily in package type and thermal performance. The series is designed for general-purpose switching applications requiring simplified biasing networks.

Replacement Considerations

Direct substitutes include DTC115EKA without the reel suffix or other ROHM NPN digital transistors with identical 100 kOhm input resistance and 50 V rating. Verify pinout compatibility and thermal dissipation limits before substitution.