DDTC125TUA-7-F

Overview

The DDTC125TUA-7-F is an NPN pre-biased small signal surface mount transistor from Diodes Incorporated, belonging to the DDTC (R1-only) series. It features a built-in biasing resistor with a nominal value of 200 kΩ and operates in a single configuration within an SOT-323 package. The device supports a maximum collector-emitter voltage of 50 V and a continuous collector current of 100 mA, with a power dissipation rating of 200 mW. It exhibits a DC current transfer ratio (hFE) ranging from 100 to 600 at IC = 1mA and VCE = 5V, and a gain-bandwidth product of 250 MHz. The operating temperature range spans from -55°C to +150°C.

Feature Summary

• Epitaxial planar die construction for reliable performance
• Integrated single biasing resistor simplifies circuit design
• Surface mount package optimized for automated assembly processes
• Fully compliant with RoHS directives and halogen/antimony-free standards

Applications

• General-purpose switching applications
• Driver circuits for low-power loads
• Logic level translation interfaces

Procurement Notes

Verify component status before procurement as this specific part number is listed as obsolete in official documentation. Confirm availability through authorized distributors or secondary markets if immediate sourcing is required. Ensure compatibility with existing supply chain protocols given the end-of-life designation.

Selection Notes

Select alternative models from the same DDTC R1-only series when redesigning, such as those with different nominal resistance values like 1kΩ, 2.2kΩ, or 4.7kΩ. Consider the DDTA series for PNP configurations requiring similar electrical characteristics and packaging constraints.

Part Context

This component is part of the DDTC UA series manufactured by Diodes Incorporated. The series includes various NPN pre-biased transistors with different internal resistor values, all sharing the SOT-323 package and similar electrical specifications for small-signal applications.

Replacement Considerations

Official substitutes include other active members of the DDTC1xxTUA family, such as DDTC113TUA-7-F, DDTC123TUA-7-F, DDTC143TUA-7-F, DDTC114TUA-7-F, DDTC124TUA-7-F, DDTC144TUA-7-F, and DDTC115TUA-7-F.