DTA015EUBTL

Overview

The DTA015EUBTL is a single NPN digital transistor manufactured by ROHM Semiconductor, featuring built-in biasing resistors to simplify circuit design. It operates with a collector-emitter voltage of -50 V and a continuous collector current of -100 mA. The device includes an input resistor (R1) and an emitter-base resistor (R2), both typically rated at 100 kOhms with a ratio of 1. Packaged in the SOT-323FL-3 surface-mount format, it supports a maximum power dissipation of 200 mW and functions up to a transition frequency of 250 MHz. The unit is RoHS compliant and suitable for general-purpose switching applications.

Feature Summary

• Integrated biasing resistors eliminate the need for external components, reducing board space and simplifying inverter circuit configuration.
• High-speed switching capability with a transition frequency of 250 MHz ensures reliable performance in high-frequency digital logic interfaces.
• Compact SOT-323FL-3 package design facilitates automated surface-mount assembly and minimizes footprint in dense electronic layouts.

Applications

• General-purpose digital logic level shifting and signal inversion
• Driver circuits for small-signal relays and solenoids
• Switching elements in portable battery-powered devices

Procurement Notes

Verify the specific suffix 'UBTL' against the manufacturer's official datasheet to confirm the exact reel quantity and tape-and-reel specifications. Ensure that the ordering documentation explicitly references the full part number to avoid confusion with non-taped variants or older packaging formats. Cross-reference the component marking code on received units with the official identification guide to prevent counterfeit substitution.

Selection Notes

Select this component when a PNP digital transistor with equal internal bias resistors is required for compact designs. Compare the 100 kOhm input resistance against other series members like DTA014EUBTL if lower drive current is needed. Verify that the -50 V collector voltage rating exceeds the maximum load voltage in the target application to ensure adequate safety margins during operation.

Part Context

This component belongs to the DTA015EUB family of standard digital transistors from ROHM Semiconductor. It serves as the pre-biased counterpart to discrete bipolar junction transistors, offering a drop-in replacement solution. The EMT3F/SOT-323FL-3 package variant provides a standardized footprint compatible with existing PCB footprints designed for small-signal transistors.

Replacement Considerations

Direct functional substitutes within the same ROHM lineup include DTA015TEBTL, which shares similar electrical characteristics but utilizes the EMT3F (SOT-416FL) package. Designers must verify pinout compatibility and thermal dissipation requirements when swapping between SOT-323FL and SOT-416FL packages.