DDTA143ZE-7-F

Overview

The DDTA143ZE-7-F is a PNP pre-biased small signal surface mount transistor from Diodes Incorporated, housed in an SOT-523 package. It integrates internal biasing resistors with nominal values of R1 = 4.7 kΩ and R2 = 47 kΩ. The device supports a maximum supply voltage (VCC) of -50 V and a continuous output current (IO) of -100 mA. Power dissipation is rated at 150 mW, with a junction-to-ambient thermal resistance of 833 °C/W. Operating and storage temperatures range from -55°C to +150°C. The component meets AEC-Q101 standards for high reliability.

Feature Summary

• Epitaxial planar die construction with built-in biasing resistors
• Qualified to AEC-Q101 standards for automotive applications
• Totally lead-free and fully RoHS compliant
• Halogen and antimony free "Green" device

Applications

• Automotive electronics requiring high reliability components
• General purpose switching applications
• Driver circuits for logic interfaces

Procurement Notes

Verify the specific ordering suffix '-7-F' corresponds to the AEC-Q101 qualified version with 3,000 units per reel. Confirm that the marking code 'P11' matches the required traceability standards. Ensure compliance with EU Directive 2002/95/EC (RoHS) requirements during procurement.

Selection Notes

Select this component when a PNP pre-biased transistor with 4.7 kΩ base resistor and 47 kΩ emitter resistor is required. The SOT-523 package offers a compact footprint suitable for space-constrained designs. Verify that the -100 mA current rating and -50 V voltage rating meet the circuit requirements.

Part Context

This part belongs to the DDTA (R1≠R2 Series) E family of pre-biased transistors. It is specifically designed as a PNP type, complemented by NPN types such as the DDTC series. The device utilizes molded plastic case material with a UL flammability classification rating of 94V-0.

Replacement Considerations

Direct substitutes within the same manufacturer's lineup include other DDTA143 variants with different resistor ratios, such as DDTA143XE or DDTA143FE. Cross-manufacturer replacements must match the PNP polarity, SOT-523 package, and electrical ratings.