DDTA123YUA-7-F

Overview

The DDTA123YUA-7-F is a PNP pre-biased small signal surface mount transistor from Diodes Incorporated, housed in an SOT-323 package. It features built-in biasing resistors with nominal values of R1 = 2.2 kΩ and R2 = 10 kΩ. The device supports a maximum supply voltage (VCC) of -50 V and a continuous collector current (IC) of -100 mA. Power dissipation is rated at 200 mW, with a junction-to-ambient thermal resistance of 625 °C/W. The DC current gain (hFE) has a minimum value of -33, and the transition frequency (fT) is typically 250 MHz. Operating and storage temperatures range from -55°C to +150°C.

Feature Summary

• Epitaxial planar die construction for reliable performance
• Integrated unequal biasing resistors simplify circuit design
• Lead-free plating with RoHS compliance and green molding compound

Applications

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

Procurement Notes

Verify component authenticity by checking the marking code 'P05' on the SOT-323 package against official Diodes Incorporated documentation. Confirm the datasheet revision matches the manufacturing date code. Ensure the ordering suffix '-7-F' corresponds to the tape and reel packaging format specified in the manufacturer's ordering information table.

Selection Notes

Select this component when a PNP digital transistor with specific 2.2 kΩ base resistor and 10 kΩ emitter resistor ratios is required. Compare the -100 mA collector current limit and -50 V breakdown voltage against circuit requirements. Consider the complementary NPN type DDTC123YUA-7-F if an NPN configuration is needed instead.

Part Context

This part belongs to the DDTA (R1≠R2 Series) UA family of pre-biased transistors. It serves as the PNP counterpart to the DDTC series. The 'YUA' designation specifically identifies the 2.2 kΩ/10 kΩ resistor combination within the SOT-323 form factor, distinguishing it from other variants like DDTA123JUA or DDTA143XUA.

Replacement Considerations

Direct substitutes include other DDTA123YUA variants from different manufacturers if pinouts and electrical characteristics match exactly. Complementary designs may require swapping to the NPN DDTC123YUA-7-F while adjusting circuit polarity.