DDTA143ECA-7-F

Overview

The DDTA143ECA-7-F is a PNP pre-biased small signal surface mount transistor manufactured by Diodes Incorporated. It features an epitaxial planar die construction in a SOT23 package with built-in biasing resistors where R1 equals R2, nominally 4.7 kOhms. The device supports a supply voltage of -50 V and a continuous collector current of -100 mA. Power dissipation is rated at 200 mW, with an operating temperature range from -55°C to +150°C. It is AEC-Q101 qualified for high reliability and RoHS compliant.

Feature Summary

• Integrated equal-value biasing resistors simplify circuit design
• Qualified to AEC-Q101 standards for automotive applications
• Totally lead-free and fully RoHS compliant construction

Applications

• Automotive electronic circuits requiring high reliability
• General-purpose switching applications
• Driver circuits for logic interfaces

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm compliance status and packaging details. Confirm that the component meets all required environmental regulations for the intended deployment region. Ensure compatibility with existing assembly processes regarding moisture sensitivity levels and solderability requirements before finalizing procurement orders.

Selection Notes

Select this component when a single PNP digital transistor with matched internal resistors is required. Verify that the nominal 4.7 kOhm resistance value aligns with the target input drive characteristics. Ensure the SOT23 package dimensions fit within the designated PCB footprint constraints and thermal management requirements.

Part Context

This part belongs to the DDTA (R1 = R2 Series) CA family of pre-biased transistors. It serves as a compact solution replacing discrete resistor networks with a single semiconductor device. The series includes complementary NPN types and various resistance values to accommodate different logic interface needs.

Replacement Considerations

Check for equivalent parts within the same manufacturer's portfolio or cross-reference with other suppliers ensuring identical pinout and electrical specifications. Verify that any substitute maintains the same AEC-Q101 qualification if automotive use is required.