DDTA143XUA-7-F

Overview

The DDTA143XUA-7-F is a PNP pre-biased small signal surface mount transistor manufactured by Diodes Incorporated. It features an epitaxial planar die construction housed in an SOT-323 package. The device integrates internal biasing resistors with nominal values of R1 = 4.7 kΩ and R2 = 10 kΩ. Key electrical specifications include a maximum collector-emitter voltage (VCC) of -50 V, a maximum output current (IO) of -100 mA, and a power dissipation (Pd) of 200 mW. The DC current gain (Gl) has a minimum value of -30 at VO = -5 V and IO = -10 mA. The transition frequency (fT) is typically 250 MHz.

Feature Summary

• Integrates two distinct biasing resistors (R1 ≠ R2) to simplify circuit design
• Utilizes epitaxial planar die construction for reliable performance
• Available in a compact SOT-323 surface mount case

Applications

• Switching applications requiring integrated base drive
• Driver circuits for logic level translation
• General purpose amplification stages

Procurement Notes

Verify the component marking code 'P09' on the physical device to confirm it matches the DDTA143XUA-7-F specification. Ensure the ordering suffix '-7-F' corresponds to the tape and reel packaging format containing 3000 units per reel as defined in the manufacturer's ordering information table.

Selection Notes

Select this component when a PNP configuration with specific unequal resistor ratios (4.7k/10k) is required. Compare against other series members like DDTA143FUA or DDTA143ZUA if different resistance values are needed. Confirm that the SOT-323 footprint and thermal characteristics meet the system constraints.

Part Context

This part belongs to the DDTA (R1≠R2 SERIES) UA family from Diodes Incorporated. It serves as the PNP counterpart to the DDTC NPN pre-biased transistor series. The 'UA' suffix indicates the specific SOT-323 mechanical casing used for this product line.

Replacement Considerations

Direct substitutes within the same series include DDTA143FUA and DDTA143ZUA, provided their respective resistor values align with the design requirements. Verify pin compatibility and thermal ratings before substitution.