DTC044TUBTL

Overview

The DTC044TUBTL is an NPN pre-biased digital transistor manufactured by ROHM Semiconductor, housed in a UMT3F (SOT-723) surface-mount package. It integrates a single base resistor of 47 kOhms with a typical resistance ratio of 1. Key electrical specifications include a maximum collector-emitter voltage (VCEO) of 50 V, a continuous collector current of 60 mA, and a power dissipation of 200 mW. The device features a minimum DC current gain (hFE) of 80 at 5 mA and 10 V, with a transition frequency of 250 MHz. It operates within a temperature range up to +150°C and includes a 3 V emitter-base voltage rating.

Feature Summary

• Integrates a single 47 kOhm base resistor for simplified biasing circuitry
• High-speed switching capability with a 250 MHz transition frequency
• Compact SMD packaging suitable for automated surface-mount assembly

Applications

• General-purpose switching applications in consumer electronics
• Driver circuits for low-current loads such as LEDs or relays
• Logic level translation and signal buffering in digital systems

Procurement Notes

Verify the specific suffix 'TUBTL' corresponds to the UMT3F package and tape-and-reel quantity when sourcing. Confirm RoHS compliance status and moisture sensitivity level requirements for your manufacturing process. Ensure the supplier provides official datasheets matching the ROHM Semiconductor part number to avoid counterfeit components. Check lead times against production schedules as availability may vary by distributor.

Selection Notes

Select this component when a compact NPN digital transistor with integrated biasing is required for space-constrained designs. The 47 kOhm input resistance offers a standard balance between drive current and noise immunity. Consider the 50 V breakdown voltage and 60 mA current limit to ensure adequate headroom for the target application's electrical demands.

Part Context

This part belongs to the DTC044 series of pre-biased bipolar transistors from ROHM Semiconductor. These devices are designed to replace discrete resistor-transistor combinations, reducing board space and assembly costs. The UMT3F package is part of ROHM's lineup of small-form-factor surface-mount packages optimized for high-density PCB layouts.

Replacement Considerations

Compatible substitutes include DTC044EUBTL (SOT-323FL-3 package) and DTC144EUBTL (SOT-323FL-3 package). Verify pinout compatibility and thermal characteristics when substituting across different package types.