DDTA124TUA-7-F

Overview

The DDTA124TUA-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 = 22 kΩ and R2 = 47 kΩ. The device supports a maximum collector-emitter voltage (VCC) of -50 V and a continuous output current (IC) of -100 mA. Power dissipation is rated at 200 mW, with an operating temperature range spanning from -55°C to +150°C. The component utilizes epitaxial planar die construction and includes a gain-bandwidth product (fT) of approximately 250 MHz.

Feature Summary

• Integrates two distinct biasing resistors (R1 ≠ R2) within a single compact surface-mount package to simplify circuit design.
• Constructed using epitaxial planar die technology for reliable performance in small signal applications.
• Designed as a complement to NPN types within the DDTC series for matched pair configurations.

Applications

• General-purpose switching circuits requiring integrated base drive components.
• Driver stages for logic interfaces where resistor count reduction is beneficial.
• Small signal amplification tasks within consumer electronics and industrial control systems.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct packaging and shipping configuration. Confirm that the requested quantity aligns with standard tape and reel requirements specified by Diodes Incorporated. Cross-reference the date code and marking information on received units with the datasheet tables to validate authenticity and manufacturing batch details prior to integration into production lines.

Selection Notes

Select this component when a PNP pre-biased transistor with a 22 kΩ input resistor and 47 kΩ emitter resistor is required. Ensure the application voltage does not exceed the -50 V rating and current demands remain within the -100 mA limit. Consider the SOT-323 footprint constraints and thermal resistance characteristics during PCB layout planning to maintain safe operating temperatures under maximum power dissipation conditions.

Part Context

This part belongs to the DDTA (R1≠R2 Series) UA family of pre-biased transistors manufactured by Diodes Incorporated. The 'UA' designation indicates the SOT-323 case style. This series provides various combinations of internal resistors to accommodate different logic levels and drive requirements without external discrete components.

Replacement Considerations

Direct functional equivalents within the same series include DDTA124XUA-7-F and DDTA124WUA-7-F, which share the SOT-323 package but differ in internal resistor values. Verify pinout compatibility and electrical ratings before substituting any alternative part numbers.