DDTA123JUA-7-F

Overview

The DDTA123JUA-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 SOT-323 case. The device integrates built-in biasing resistors with nominal values of R1 = 2.2 kΩ and R2 = 47 kΩ, resulting in a resistance ratio of approximately 0.046. Key electrical characteristics include a maximum collector current of -100 mA, a supply voltage rating of -50 V, and a power dissipation of 200 mW at 25°C. The DC current gain (hFE) has a minimum value of 80, and the transition frequency is typically 250 MHz.

Feature Summary

• Integrates two internal biasing resistors to simplify circuit design
• Utilizes epitaxial planar die construction for reliability
• Available in a compact SOT-323 surface mount package

Applications

• General-purpose switching applications
• Driver circuits for logic interfaces
• Inverter circuits requiring integrated biasing

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm RoHS compliance status based on manufacturing date codes, as early production units may utilize non-green molding compounds. Ensure proper handling procedures are followed during assembly to maintain moisture sensitivity level 1 integrity.

Selection Notes

Select this component when a PNP configuration with specific resistor ratios is required. Compare against the complementary DDTC123JUA series for NPN requirements. Verify that the SOT-323 package dimensions and thermal resistance parameters align with the target PCB layout and operating temperature constraints.

Part Context

This part belongs to the DDTA123 series within the broader DDTA family of pre-biased transistors. It shares the same physical footprint and general electrical ratings as other variants in the series but differs in internal resistor values. The 'UA' suffix denotes the SOT-323 package type.

Replacement Considerations

DDTA123YUA-7-F offers different resistor values (R1=2.2k, R2=10k). DDTC123JUA-7-F is the NPN complement. Verify pinout compatibility and electrical parameter alignment before substitution.

FAQ

What are the nominal values of the internal resistors?

The internal base resistor (R1) is nominally 2.2 kΩ, and the emitter-base resistor (R2) is nominally 47 kΩ.

What is the maximum power dissipation?

The maximum power dissipation is 200 mW at an ambient temperature of 25°C.

Is this component suitable for high-frequency applications?

Yes, it has a typical transition frequency (fT) of 250 MHz under specified test conditions.