DTB113ZKT146

Overview

The DTB113ZKT146 is a PNP digital transistor from ROHM Semiconductor, featuring built-in bias resistors for simplified circuit design. It operates with a collector-emitter voltage of -50 V and a continuous collector current of -0.5 A. The device includes a base resistor (R1) of 1 kΩ and an emitter-base resistor (R2) of 10 kΩ. Key electrical parameters include a minimum DC current gain (hFE) of 56 at -50 mA and -5 V, a transition frequency of 200 MHz, and a power dissipation rating of 200 mW. It is housed in an SMT3 (SOT-23-3) surface-mount package.

Feature Summary

• Integrates bias resistors to eliminate external input components for inverter circuits
• Utilizes thin-film resistors to minimize parasitic effects and ensure stable negative biasing
• Supports straightforward on/off switching operations without complex design requirements

Applications

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

Procurement Notes

Verify the specific suffix T146 corresponds to the tape and reel packaging configuration with a standard quantity of 3000 units per reel. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor datasheets before finalizing procurement specifications.

Selection Notes

Select this component when a PNP digital transistor with a 1 kΩ input resistance is required. Ensure the application voltage does not exceed -50 V and current limits remain within -0.5 A. Verify that the SMT3 package dimensions fit the available PCB footprint and thermal management constraints.

Part Context

This part belongs to the ROHM DTx series of digital transistors, which are designed to replace discrete resistor-transistor combinations. The DTB113ZKT146 specifically addresses PNP logic needs with integrated biasing, reducing board space and assembly complexity compared to traditional discrete solutions.

Replacement Considerations

Direct substitutes may include other ROHM PNP digital transistors with similar R1/R2 ratios, such as the DTB113EC or DTB113ZC, provided pin compatibility and electrical ratings match the original design requirements.