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Product Detailed Parameters
- Description：TRANS PREBIAS PNP 50V SOT23-3
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR)
- Resistors Included：R1 and R2
- 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)：10 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce：56 @ 50mA, 5V
- Vce Saturation (Max) @ Ib, Ic：300mV @ 2.5mA, 50mA
- Current - Collector Cutoff (Max)：500nA
- 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 DDTB122LC-7 is a PNP pre-biased single transistor manufactured by Diodes Incorporated. It features an epitaxial planar die construction and integrates built-in biasing resistors within a surface-mount SOT-23 package. The device supports a maximum collector-emitter voltage of -50V and a continuous collector current of -500mA, with a power dissipation rating of 200mW at +25°C. Electrical characteristics include a minimum DC current gain (hFE) of 56 at -50mA/-5V and a typical gain-bandwidth product of 200MHz. Internal resistor values are nominally R1 = 0.22kΩ and R2 = 10kΩ.
Feature Summary
- Integrates built-in biasing resistors to simplify circuit design
- Utilizes epitaxial planar die construction for reliability
- Complementary NPN types available in the same series
Applications
- General-purpose switching applications
- Driver circuits for low-power loads
- Logic interface buffering
Procurement Notes
This component is officially marked as obsolete and discontinued by the manufacturer. Verification of availability requires direct contact with Diodes Incorporated or authorized representatives. Standard procurement channels may not support new orders. Engineering teams should initiate replacement strategies immediately to ensure long-term supply continuity for production schedules.
Selection Notes
Select this part only if legacy compatibility is required, as it is no longer in active production. Verify that the SOT-23 footprint and pinout match existing board layouts. Ensure the -50V voltage rating and -500mA current capacity meet the specific load requirements. Confirm that the integrated resistor values align with the target logic levels.
Part Context
The DDTB122LC-7 belongs to the DDTB series of PNP pre-biased transistors from Diodes Incorporated. This series is designed to replace discrete resistor networks driving BJT bases. The 'LC' suffix specifically denotes the internal resistor configuration of 0.22kΩ and 10kΩ. It is part of a broader family including complementary NPN devices like the DDTD series.
Replacement Considerations
DDTB142JC-7-F
FAQ
What are the nominal values of the internal biasing resistors?
For the DDTB122LC variant, the base resistor (R1) is nominally 0.22kΩ and the emitter resistor (R2) is nominally 10kΩ.
Is this component suitable for automotive applications?
Standard versions are not automatically qualified for automotive use. For AEC-Q100/101/200 qualification and IATF 16949 manufacturing, customers must contact Diodes Incorporated directly.
What is the maximum operating temperature range?
The junction and storage temperature range is specified from -55°C to +150°C.
