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Product Detailed Parameters
- Description：TRANS PREBIAS PNP 200MW SOT323
- Series：*
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Tape & Reel (TR),Cut Tape (CT)
- Resistors Included：-
- Transistor Type：-
- Current - Collector (Ic) (Max)：-
- Voltage - Collector Emitter Breakdown (Max)：-
- Resistor - Base (R1)：-
- Resistor - Emitter Base (R2)：-
- DC Current Gain (hFE) (Min) @ Ic, Vce：-
- Vce Saturation (Max) @ Ib, Ic：-
- Current - Collector Cutoff (Max)：-
- Frequency - Transition：-
- Power - Max：-
- Grade：-
- Qualification：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
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Overview
The DDTA122LU-7 is a PNP pre-biased transistor manufactured by Diodes Incorporated, housed in an SOT-323 surface-mount package. It integrates biasing resistors with a nominal R1 of 0.22 kΩ and an open R2 configuration. Key electrical ratings include a maximum supply voltage (VCC) of -50 V, continuous collector current of -100 mA, and power dissipation of 200 mW at 25°C ambient temperature. The device operates within a junction temperature range of -55°C to +150°C and features a minimum DC current gain (hFE) of 56.
Feature Summary
- Integrates built-in biasing resistors for simplified circuit design
- Utilizes epitaxial planar die construction for reliability
- Complies with RoHS standards and utilizes green molding compound
Applications
- General-purpose switching applications
- Driver circuits requiring integrated biasing
- Low-voltage digital logic interfacing
Procurement Notes
This component is officially marked as obsolete and discontinued by the manufacturer. Verification of availability requires direct contact with authorized distributors or the manufacturer. Engineering teams should prioritize identifying qualified replacement components to ensure long-term supply chain stability and avoid production delays associated with end-of-life parts.
Selection Notes
Select this part only if legacy compatibility is required. Verify that the SOT-323 footprint matches the PCB layout. Confirm that the -50 V supply voltage rating meets system requirements. Ensure thermal management accommodates the 200 mW power dissipation limit under expected operating conditions.
Part Context
The DDTA122LU-7 belongs to the DDTA series of PNP pre-biased transistors from Diodes Incorporated. This series consolidates discrete transistors and resistors into single packages to reduce board space. The 'LU' suffix specifically denotes the 0.22 kΩ input resistor value and open output resistor configuration within the SOT-323 form factor.
Replacement Considerations
Verify cross-reference data sheets for equivalent PNP pre-biased transistors in SOT-323 packages. Check for matching R1 values (0.22 kΩ), hFE ranges, and voltage ratings. Validate pinout compatibility before substitution.
