DDTA144EE-7-F

Overview

The DDTA144EE-7-F is a PNP pre-biased transistor manufactured by Diodes Incorporated, housed in an SOT523 surface-mount package. It features built-in biasing resistors with nominal values of R1 = 47 kΩ and R2 = 47 kΩ. The device supports a supply voltage (VCC) of 50 V and a continuous collector current (IC) of -100 mA. Key electrical parameters include a DC current gain (hFE) minimum of -68 at IO = -5 mA, a transition frequency (fT) of 250 MHz, and a power dissipation rating of 150 mW. Operating temperatures range from -55°C to +150°C.

Feature Summary

• Integrates dual biasing resistors (R1 and R2) within the package to simplify circuit design and reduce component count.
• Utilizes epitaxial planar die construction for high reliability and consistent performance characteristics.
• Complies with RoHS 3 standards and is halogen-free, ensuring environmental safety and regulatory adherence.

Applications

• General-purpose switching applications requiring integrated base biasing.
• Driver circuits for small-signal loads where space constraints favor compact SOT523 packaging.
• Logic interface circuits utilizing the pre-biased configuration for level shifting or buffering.

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm packaging details such as reel size and tape width. Ensure compliance with moisture sensitivity level requirements during storage and handling. Confirm that the selected variant meets all necessary automotive or industrial qualification standards if applicable to the end-use environment.

Selection Notes

Select this component when a PNP pre-biased transistor with a 47 kΩ internal resistor ratio is required. Compare the -100 mA collector current limit and 50 V breakdown voltage against load requirements. Consider the SOT523 footprint dimensions and thermal resistance characteristics relative to available board space and heat dissipation capabilities.

Part Context

This part belongs to the DDTA (R1 = R2 Series) EE family from Diodes Incorporated. It is functionally complementary to the DDTC144EE series, which provides NPN configurations. The 'EE' designation indicates the specific resistor tolerance and matching characteristics defined in the datasheet.

Replacement Considerations

Direct substitutes within the same series include DDTA123EE-7-F, DDTA143EE-7-F, DDTA114EE-7-F, DDTA124EE-7-F, and DDTA115EE-7-F, which share identical packaging and electrical ratings but differ in nominal resistor values.

FAQ

What are the nominal values for the internal resistors R1 and R2?

For the DDTA144EE-7-F, both R1 and R2 have a nominal value of 47 kΩ.

What is the maximum power dissipation rating?

The maximum power dissipation (PD) is 150 mW at an ambient temperature of +25°C.

Is this component suitable for high-reliability applications?

Yes, the part is qualified to JEDEC standards for high reliability and is available for automotive applications requiring AEC-Q100/101/104/200 qualification upon request.