DDC124EU-7-F

Overview

The DDC124EU-7-F is an NPN pre-biased small signal dual surface mount transistor manufactured by Diodes Incorporated. It features epitaxial planar die construction and integrates built-in biasing resistors within a compact SOT363 package. The device operates with a collector-emitter breakdown voltage of 50 V, a continuous collector current of 100 mA, and a power dissipation rating of 200 mW. Each internal transistor includes a 22 kOhm input resistor (R1) and a 22 kOhm emitter resistor (R2). The component supports an operating temperature range from -55°C to +150°C and complies with RoHS standards.

Feature Summary

• Dual configuration integrating two independent NPN transistors with built-in biasing resistors for simplified circuit design.
• Epitaxial planar die construction utilizing totally lead-free materials that are fully RoHS compliant and halogen-free.
• Compact SOT363 surface-mount package designed to minimize PCB footprint while maintaining thermal stability.

Applications

• General-purpose switching applications in consumer electronics.
• Driver circuits requiring integrated base resistance for load control.
• Logic interface stages converting microcontroller signals to higher current loads.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm active status and packaging details. Confirm compliance requirements such as RoHS and halogen-free status prior to integration. Ensure the selected variant matches the required resistor values and polarity specifications for the target application design.

Selection Notes

Select this component when a dual NPN configuration with fixed 22 kOhm biasing resistors is required. Verify that the 50 V collector-emitter voltage and 100 mA current ratings exceed the maximum operational demands of the circuit. Consider the SOT363 package dimensions and thermal resistance characteristics during the layout phase to ensure adequate heat dissipation.

Part Context

This part belongs to the DDC series of NPN pre-biased dual transistors produced by Diodes Incorporated. It shares the same physical package and general electrical architecture as other members of the family, distinguished primarily by the specific resistance values of the integrated R1 and R2 components. The series provides a standardized solution for space-constrained digital switching designs.

Replacement Considerations

The datasheet identifies the DDC124EUQ-7-F as Not Recommended for New Design (NRND), suggesting the ADC124EUQ as a potential alternative. Verify compatibility with any complementary PNP types if a full bridge or push-pull configuration is needed.

FAQ

What are the nominal resistance values for the built-in resistors?

The DDC124EU-7-F contains two resistors: R1 (base resistor) is 22 kOhms and R2 (emitter resistor) is 22 kOhms.

Is this component suitable for automotive applications?

Standard versions are not explicitly qualified for automotive use. Only the DDC(XXXX)UQ variants are AEC-Q101 qualified and manufactured in IATF 16949 certified facilities for automotive applications.

What is the transition frequency of the transistor?

The typical transition frequency (fT) is 250 MHz, measured at VCE = 10V and IE = 5mA.