DDTA143ECA-7

Overview

The DDTA143ECA-7-F is a PNP pre-biased small signal surface mount transistor from Diodes Incorporated, housed in an SOT23 package. It features built-in biasing resistors where R1 equals R2, with a nominal resistance of 4.7 kΩ. The device has a supply voltage rating of -50 V and a continuous collector current of -100 mA. Power dissipation is rated at 200 mW, with an operating temperature range spanning from -55°C to +150°C. It includes a minimum DC current gain (hFE) of 20 and a transition frequency of 250 MHz.

Feature Summary

• Integrates two internal biasing resistors with equal values to simplify circuit design.
• Constructed using epitaxial planar die technology for reliable performance.
• Qualified to AEC-Q101 standards for high reliability in automotive applications.
• Compliant with RoHS directives and manufactured as a halogen-free green device.

Applications

• Switching applications requiring integrated base biasing networks.
• Automotive electronic systems meeting AEC-Q101 qualification requirements.
• General-purpose digital logic interfacing and level shifting circuits.

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging details and compliance status. Ensure that the selected variant matches the required reel size and quantity per reel specifications provided by the manufacturer. Cross-reference the date code marking system to validate production timelines and traceability requirements for your assembly process.

Selection Notes

Select this component when a single PNP transistor with matched internal resistors is required. The 4.7 kΩ resistor value suits standard logic interface applications. Consider the thermal resistance and power derating curves if operating near maximum temperature limits. Verify that the SOT23 package dimensions align with your PCB footprint constraints.

Part Context

This part belongs to the DDTA143ECA series within the broader DDTA family of pre-biased transistors. It shares electrical characteristics with other variants in the CA series but differs in resistor values. The '7-F' suffix indicates active status, AEC-Q101 qualification, and specific tape-and-reel packaging parameters defined in the ordering information section.

Replacement Considerations

Direct substitutes include other DDTA143ECA variants with different suffixes if packaging or compliance requirements differ. For automotive applications, ensure any replacement maintains AEC-Q101 qualification. Standard NPN complements are available in the DDTC series but require circuit inversion adjustments.