DDTA143XCA-7-F

Overview

The DDTA143XCA-7-F is a PNP pre-biased small signal surface mount transistor manufactured by Diodes Incorporated. It features an epitaxial planar die construction with built-in biasing resistors where R1 is not equal to R2. The device is housed in an SOT-23-3 package and operates within a temperature range of -55°C to +150°C. Key electrical parameters include a maximum collector-emitter voltage (VCEO) of 50 V, a continuous collector current of -100 mA, and a power dissipation of 200 mW. The typical input resistor value is 4.7 kOhms, with a minimum DC current gain (hFE) of 30.

Feature Summary

• Integrates built-in biasing resistors with unequal values to simplify circuit design.
• Utilizes epitaxial planar die construction for reliable performance.
• Offers a compact surface mount form factor suitable for automated assembly.

Applications

• General-purpose switching applications
• Driver circuits for logic interfaces
• Signal inversion stages

Procurement Notes

Verify the specific suffix against official documentation to confirm packaging and compliance details. Ensure that the ordering information matches the required tape and reel specifications. Cross-reference the manufacturer's part number with authorized distributor listings to confirm authenticity and availability status before finalizing procurement plans.

Selection Notes

Select this component when a PNP configuration with integrated biasing is required. The 4.7 kOhm input resistor and 50 V rating define its operational limits. Compare the hFE minimum and power dissipation requirements against the application load to ensure adequate margin. Verify that the SOT-23-3 footprint aligns with the PCB layout constraints.

Part Context

This part belongs to the DDTA143 series of pre-biased transistors from Diodes Incorporated. It serves as a complement to NPN types within the DDTC family. The series provides various resistor combinations to accommodate different drive requirements while maintaining a consistent physical package and thermal profile.

Replacement Considerations

Direct substitutes include other DDTA143 variants such as DDTA143FUA or DDTA143ZUA if resistor ratios differ. Verify pinout compatibility and electrical ratings before substitution. Check for equivalent packages like SOT-323 if mechanical constraints allow.