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The DDTA122TU-7-F is a PNP pre-biased transistor manufactured by Diodes Incorporated. It features an epitaxial planar die construction with a built-in base resistor (R1) of 0.22 kΩ and no collector resistor (R2). The device is housed in a surface-mount SOT-323 package. Maximum ratings include a supply voltage of -50 V, continuous collector current of -100 mA, and power dissipation of 200 mW at 25°C. Electrical characteristics specify a minimum DC current transfer ratio (hFE) of 100 at IC = -1mA and VCE = -5V, with a gain-bandwidth product of 200 MHz.
This component has been officially discontinued and is listed as obsolete by the manufacturer. Verification of availability should focus on surplus or secondary market sources rather than direct production channels. Engineering teams must confirm end-of-life status before finalizing designs to ensure long-term supply stability.
Select this part only if the specific 0.22 kΩ base resistance and PNP polarity match the design requirements. Verify that the SOT-323 footprint aligns with the PCB layout. Due to its discontinued status, alternative components with similar electrical parameters and pin configurations should be evaluated for new designs.
The DDTA122TU-7-F belongs to the DDTA series of pre-biased transistors from Diodes Incorporated. This series combines NPN and PNP types to offer complementary solutions. The 'TU' suffix indicates the PNP variant with a 0.22 kΩ base resistor in an SOT-323 package, distinct from other resistor values or packaging options within the same family.
Publicly confirmed substitute part numbers are not available in the provided documentation. Engineers should consult official replacement guides or contact the manufacturer directly for validated cross-reference data.