DTD114EKT146

Overview

The DTD114EKT146 is a single NPN digital transistor manufactured by ROHM Semiconductor, housed in an SOT-346-3 surface-mount package. It integrates biasing resistors with a typical input resistance of 10 kOhms and a resistor ratio of 1. The device supports a collector continuous current of 500 mA and operates up to a maximum frequency of 200 MHz. Key electrical limits include a collector-emitter voltage of 50 V, an emitter-base voltage of 3 V, and power dissipation of 200 mW. Minimum DC current gain is specified at 56 under standard test conditions.

Feature Summary

• Integrates built-in biasing resistors to simplify circuit design
• Enables direct connection to logic gates without external components
• Provides high-speed switching capabilities for signal processing

Applications

• Logic level shifting between different voltage domains
• Driver circuits for small-signal loads
• Inverter configurations in digital control systems

Procurement Notes

Verify the specific suffix KT146 against the official datasheet to confirm packaging format and reel specifications. Ensure compatibility with RoHS directives if required by the target application. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and traceability before finalizing procurement orders.

Selection Notes

Select this component when a single NPN configuration with 10 kOhm base resistance is required. The 500 mA current rating suits moderate load applications. Verify that the SOT-346-3 footprint matches the PCB layout constraints. Confirm that the 200 MHz transition frequency meets the system's switching speed requirements.

Part Context

This part belongs to the DTD114EK series of pre-biased transistors from ROHM. It shares the same internal structure as other variants in the family but differs in packaging and tape-and-reel specifications defined by the KT146 suffix. It serves as a discrete solution for replacing multiple discrete components in compact designs.

Replacement Considerations

Check for DTD114EK variants with different suffixes for alternative packaging options. Verify pinout compatibility with existing layouts before substituting.