DDTC144EUAQ-13-F

Overview

The DDTC144EUAQ-13-F is an NPN pre-biased small signal surface mount transistor manufactured by Diodes Incorporated. It features built-in biasing resistors with a nominal value of 47 kΩ for both R1 and R2. The device operates with a maximum supply voltage (VCC) of 50 V and a continuous collector current (IC) of 100 mA. Electrical characteristics include a DC current gain (hFE) of 68 at IO = 5 mA, an input voltage threshold of 1.4 V to 3 V, and a transition frequency (fT) of 250 MHz. Power dissipation is rated at 200 mW with a thermal resistance of 625 °C/W. The component is housed in an SOT-323 package and complies with AEC-Q101 standards.

Feature Summary

• Epitaxial planar die construction with integrated biasing resistors where R1 equals R2.
• Qualified to AEC-Q101 automotive reliability standards and capable of PPAP submission.
• Totally lead-free and fully RoHS compliant, featuring halogen and antimony-free green molding compound.

Applications

• Automotive electronic circuits requiring high reliability components.
• General-purpose switching applications utilizing the integrated bias network.
• Surface mount assembly processes compatible with standard SOT-323 footprints.

Procurement Notes

Verify that the specific part number suffix indicates the 13-inch reel packaging containing 10,000 units per reel. Confirm the marking code corresponds to the intended production date. Ensure compliance requirements match project specifications for automotive or industrial environments. Check for any recent product change notifications regarding material composition or manufacturing location updates.

Selection Notes

Select this component when an NPN configuration with equal series biasing resistors is required. The 47 kΩ resistor value suits applications needing moderate base drive currents. Consider the 50 V collector-emitter breakdown voltage for low-voltage logic interfacing. Evaluate the 200 mW power dissipation limit against the expected thermal environment on the PCB layout.

Part Context

This device belongs to the DDTC (R1 = R2 Series) UA family from Diodes Incorporated. It serves as the NPN counterpart to the DDTA series PNP transistors. The 'Q' suffix denotes AEC-Q101 qualification, while the '-13-F' suffix specifies the 13-inch tape and reel packaging format. Standard versions without the 'Q' share identical electrical characteristics but lack automotive certification.

Replacement Considerations

DDTC144EUA-7-F: Electrically equivalent standard version in a 7-inch reel.

FAQ

What are the nominal values for the internal biasing resistors?

Both the base resistor (R1) and emitter resistor (R2) have a nominal value of 47 kΩ.

Is this component suitable for automotive applications?

Yes, the DDTC144EUAQ variant is qualified to AEC-Q101 standards and is PPAP capable.

What is the maximum power dissipation rating?

The maximum power dissipation is 200 mW when mounted on an FR-4 PC board with minimum recommended pad layout.