DDTC114EUA-TP

Overview

The DDTC114EUA-TP is a pre-biased NPN digital transistor manufactured by Micro Commercial Components (MCC). It integrates a single NPN bipolar junction transistor with internal biasing resistors within an SOT-23-3 surface-mount package. The device features a collector-emitter breakdown voltage of 50 V and a continuous collector current rating of 100 mA. Key electrical specifications include a transition frequency of 250 MHz, a maximum power dissipation of 200 mW, and a minimum DC current gain (hFE) of 30 at 5 mA and 5 V. The unit weighs approximately 5 mg.

Feature Summary

• Integrates a single NPN transistor with dual internal biasing resistors to reduce component count and board space.
• Provides simplified circuit design through built-in base and emitter resistance networks.
• Supports high-speed switching applications with a transition frequency of 250 MHz.

Applications

• General-purpose switching circuits in consumer electronics.
• Driver stages for relays, solenoids, and small motors.
• Logic level translation and buffer interfaces in embedded systems.

Procurement Notes

Verify the specific suffix 'EUA' against the manufacturer's latest datasheet to confirm pinout orientation and resistor values, as variations exist within the DDTC114 family. Confirm RoHS compliance status directly with the supplier or via the official documentation before integration into regulated products.

Selection Notes

Select this component when a compact NPN digital switch with integrated biasing is required. Ensure the 50 V collector-emitter voltage and 100 mA current ratings exceed the application's peak demands. Compare the internal resistor ratios against other variants like DTC114 or DTA114 if PNP polarity or different resistance values are needed.

Part Context

This part belongs to the DDTC114 series of pre-biased transistors from MCC. It serves as a solid-state alternative to discrete resistor-transistor networks, offering improved reliability and reduced assembly time. The SOT-23-3 package allows for automated surface-mount placement in space-constrained designs.

Replacement Considerations

Direct substitutes include DTC114EUA-TP (NPN, SOT-323) and DTA114EUA-TP (PNP, SOT-323), though package differences require layout adjustments. Cross-brand equivalents such as the BC847BQ with external resistors may be used but will increase board area.