DTB123ESTP

Overview

The DTB123ESTP is a PNP digital transistor with built-in resistors manufactured by ROHM Semiconductor. It features an SPT package (EIAJ SC-72) and operates with a supply voltage of -50V and a collector current of -500mA. The device includes two 2.2kΩ thin-film bias resistors, enabling inverter circuit configuration without external components. Key electrical parameters include a transition frequency of 200MHz, DC current gain of 39 minimum, and power dissipation of 200mW at 25°C.

Feature Summary

• Built-in bias resistors allow for simplified inverter circuit design without external input resistors.
• Thin-film resistors provide complete isolation to eliminate parasitic effects and support positive input biasing.

Applications

• Inverter circuits
• Interface applications
• Driver circuits

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging details such as tape and reel specifications. Confirm that the component meets standard electronic equipment requirements rather than high-reliability safety applications. Ensure compatibility with surface mount assembly processes for the SPT package type.

Selection Notes

Select this component when a PNP digital transistor with integrated biasing is required for space-constrained designs. The SPT package offers distinct pinout configurations compared to standard SOT-59 packages. Verify that the -50V supply rating and -500mA current capacity align with the target application's operational limits.

Part Context

This part belongs to the DTB123 series of digital transistors from ROHM Semiconductor. It shares functional similarities with the DTB123EK but utilizes the SPT package variant. The series is designed for general-purpose switching and logic inversion tasks in consumer and office automation electronics.

Replacement Considerations

The DTB123EK serves as a functional equivalent within the same series, differing primarily in package type (SMT3 vs. SPT). Verify pinout compatibility before substitution, as the SPT package assigns different functions to pins 2 and 3 compared to the SC-59 package.