DTB143ESTP

Overview

The DTB143ESTP is a PNP digital transistor manufactured by Rohm Semiconductor, featuring built-in bias resistors for simplified circuit design. It operates with a maximum collector-emitter voltage of -50 V and a continuous collector current of -500 mA. The device incorporates thin-film resistors with R1 and R2 values of 4.7 kΩ each, providing a resistance ratio of 1. Key electrical characteristics include a DC current gain (hFE) of at least 47 at -50 mA and -5 V, and a transition frequency of 200 MHz. Packaged in the SPT (SC-72) through-hole format, it dissipates up to 300 mW.

Feature Summary

• Built-in bias resistors enable inverter circuit configuration without external input resistors.
• Thin-film resistors provide complete isolation, allowing positive input biasing and minimizing parasitic effects.
• Simplified operation requires only setting on/off conditions for device design.

Applications

• Inverter circuits
• Interface applications
• Driver circuits

Procurement Notes

Verify component authenticity against official Rohm Semiconductor documentation. Confirm package type matches SPT specifications. Check RoHS compliance status as indicated in product datasheets. Ensure ordering suffixes align with specific packaging requirements such as tape and reel quantities.

Selection Notes

Select this component when a PNP digital transistor with integrated biasing is required for space-constrained designs. The SPT package suits through-hole applications needing compact form factors. Verify that the -50 V rating and -500 mA current capacity meet system operational limits before integration into final hardware.

Part Context

This part belongs to the DTB143 series of digital transistors from Rohm Semiconductor. The series includes variants like DTB143EK and DTB143EC, differing primarily in packaging styles such as SMT3 or SST3. All share identical internal structures and electrical characteristics, offering flexibility in mounting options while maintaining consistent performance metrics.

Replacement Considerations

Direct substitutes within the same family include DTB143EK and DTB143EC. These alternatives maintain identical electrical parameters but differ in physical packaging configurations. Ensure compatibility with existing board layouts when selecting alternative package types from the DTB143 series.

FAQ

What is the structure of the DTB143ESTP?

It is a PNP epitaxial planar silicon transistor with built-in resistors.

What are the values of the built-in resistors?

Both R1 and R2 have a value of 4.7 kΩ.

What is the transition frequency of this device?

The transition frequency is 200 MHz.