DDTA124TUA-7

Overview

The DDTA124TUA-7 is a PNP pre-biased transistor from Diodes Incorporated, housed in an SOT-323 package. It features built-in biasing resistors with R1 only, having a nominal value of 22 kOhms. The device supports a collector-emitter voltage (VCEO) of -50 V and a continuous collector current of -100 mA. Power dissipation is rated at 200 mW, with an operating temperature range spanning from -55°C to +150°C. The DC current transfer ratio (hFE) ranges from 100 to 600 at IC = -1mA and VCE = -5V. The component utilizes epitaxial planar die construction and is fully RoHS compliant.

Feature Summary

• Epitaxial planar die construction for reliable performance
• Built-in single biasing resistor (R1) simplifies circuit design
• Totally lead-free and fully RoHS compliant
• Halogen and antimony free "Green" device

Applications

• Switching applications requiring simplified bias networks
• Driver circuits for low-power loads
• General-purpose digital logic interfacing

Procurement Notes

Verify the specific ordering suffix against official documentation, as standard variants may include additional characters such as '-F'. Confirm availability status directly with the manufacturer or authorized distributors, as production lifecycles can change. Ensure compliance with relevant environmental directives applicable to your region before procurement.

Selection Notes

Select this component when a PNP configuration with a 22 kOhm base resistor is required. Verify that the -50 V voltage rating and -100 mA current capacity meet the application's peak demands. Consider the SOT-323 package dimensions for PCB layout constraints. Check thermal resistance requirements if operating near maximum power dissipation limits.

Part Context

This part belongs to the DDTA series of pre-biased transistors from Diodes Incorporated. It is specifically designed as an R1-only variant within the UA package family. Complementary NPN types are available in the DDTC series. The series offers various resistor values to suit different drive requirements while maintaining a compact surface-mount footprint.

Replacement Considerations

Direct substitutes must match the PNP polarity, SOT-323 package, and 22 kOhm internal resistor value. Verify equivalent electrical ratings for VCEO, IC, and PD. Cross-reference with other manufacturers' pre-biased transistor offerings ensuring identical pinout and mechanical dimensions for drop-in replacement.