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Product Detailed Parameters
- Description：TRANS PREBIAS PNP 50V SOT23-3
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Resistors Included：R1 Only
- Transistor Type：PNP - Pre-Biased
- Current - Collector (Ic) (Max)：500 mA
- Voltage - Collector Emitter Breakdown (Max)：50 V
- Resistor - Base (R1)：220 Ohms
- Resistor - Emitter Base (R2)：-
- DC Current Gain (hFE) (Min) @ Ic, Vce：100 @ 5mA, 5V
- Vce Saturation (Max) @ Ib, Ic：300mV @ 2.5mA, 50mA
- Current - Collector Cutoff (Max)：500nA (ICBO)
- Frequency - Transition：200 MHz
- Power - Max：200 mW
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3
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Overview
The DDTB122TC-7-F is a PNP pre-biased transistor manufactured by Diodes Incorporated, housed in an SOT-23 package. It features built-in biasing resistors with nominal values of R1 = 0.22 kΩ and R2 = 10 kΩ. The device supports a maximum collector current of -500 mA and a supply voltage of -50 V. Key electrical characteristics include a minimum DC current gain (hFE) of 100 at IC = -5 mA and a collector-emitter breakdown voltage (BVCEO) of -40 V. The component operates within a temperature range of -55°C to +150°C and has a power dissipation rating of 200 mW.
Feature Summary
- Integrates internal biasing resistors to simplify circuit design and reduce board space.
- Utilizes epitaxial planar die construction for reliable performance.
- Complies with RoHS standards and is halogen and antimony-free.
Applications
- General-purpose switching applications
- Driver circuits for loads requiring PNP control
- Logic interface circuits
Procurement Notes
This component is officially marked as obsolete and discontinued by the manufacturer. Verification of availability should focus on surplus or secondary market sources rather than direct production channels. Engineering teams must initiate replacement strategies immediately due to the lack of future manufacturing support from Diodes Incorporated.
Selection Notes
Select this part only if legacy compatibility is required, as it is no longer in active production. For new designs, consider alternative PNP digital transistors with similar resistor ratios and current ratings that are currently available. Verify that the SOT-23 footprint and pinout match the existing layout constraints before attempting any substitution.
Part Context
The DDTB122TC-7-F belongs to the DDTB series of PNP pre-biased transistors from Diodes Incorporated. This series is designed to replace discrete resistor networks and individual transistors, offering a compact solution for switching tasks. The 'TC' suffix specifically denotes the 0.22 kΩ input resistor configuration.
Replacement Considerations
Public confirmed substitute part numbers: None identified in verified documentation.
