DTD113ZKT146

Overview

The DTD113ZKT146 is a single NPN digital transistor manufactured by Rohm Semiconductor, housed in an SMT3 (SOT-23) surface-mount package. It integrates bias resistors to simplify circuit design. Key electrical parameters include a collector-emitter breakdown voltage of 50 V and a continuous collector current of 500 mA. The device features a base resistor (R1) of 1 kOhms and an emitter-base resistor (R2) of 10 kOhms. It operates with a maximum power dissipation of 200 mW and has a transition frequency of 200 MHz. The DC current gain (hFE) is specified at a minimum of 82 under test conditions of 50 mA collector current and 5 V collector-emitter voltage.

Feature Summary

• Integrates thin-film bias resistors to enable inverter circuit configuration without external input components.
• Minimizes parasitic effects through the use of built-in negative biasing resistors.
• Simplifies design process by requiring only on/off condition settings for operation.

Applications

• Inverter circuits
• Interface logic circuits
• Driver applications

Procurement Notes

Verify the specific suffix T146 corresponds to the required tape-and-reel packaging format before ordering. Confirm that the SMT3 package dimensions align with the target PCB footprint. Ensure the 50V rating and 500mA current capacity meet the system requirements. Check for RoHS3 compliance if environmental regulations apply to the final assembly.

Selection Notes

Select this component when a compact NPN switching solution with integrated biasing is required. The 1k/10k resistor ratio provides a specific input impedance suitable for standard logic interfaces. Consider the 200MHz transition frequency for high-speed switching needs. Verify thermal management capabilities given the 200mW power dissipation limit in the small SMT3 package.

Part Context

This part belongs to the DTD113 series of digital transistors from Rohm Semiconductor. The series offers various resistor ratios and packages. The DTD113ZK variant specifically denotes the SMT3 package with T146 taping specifications. It is designed as a direct replacement for discrete resistor-transistor networks in space-constrained designs.

Replacement Considerations

Check DTD113ZUT106 for alternative packaging or resistor configurations within the same family. Verify compatibility with DTC113ZU3HZGT106 if lower current ratings are acceptable. Ensure substitute parts maintain the NPN polarity and similar voltage/current specifications.