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Product Detailed Parameters
- Description：TRANS PREBIAS NPN 200MW SOT323
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Tape & Reel (TR),Cut Tape (CT)
- Resistors Included：R1 and R2
- Transistor Type：NPN - 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：SC-70, SOT-323
- Supplier Device Package：SOT-323
Download product information
Overview
The DDTD122LU-7 is an NPN pre-biased transistor manufactured by Diodes Incorporated in a SOT323 surface-mount package. It integrates internal biasing resistors, specifically R1 at 0.22kΩ and R2 at 10kΩ, to simplify circuit design. The device supports a maximum collector-emitter voltage of 50V and a continuous collector current of 500mA. Electrical characteristics include a minimum DC current gain (Gl) of 56 and a gain-bandwidth product (fT) of 200MHz. Operating temperatures range from -55°C to +150°C with a power dissipation rating of 250mW.
Feature Summary
- Built-in biasing resistors for simplified circuit integration
- Totally lead-free and fully RoHS compliant construction
- Halogen and antimony free "Green" device formulation
- Qualified to JEDEC standards for high reliability applications
Applications
- Automotive electronic systems requiring specific change control
- High reliability industrial circuits
- General-purpose switching applications utilizing surface-mount assembly
Procurement Notes
Verify the exact ordering suffix when sourcing components, as variations exist within the series. Confirm that the received part matches the specified resistor values and package type. Check for any end-of-life status updates directly from the manufacturer before finalizing procurement plans.
Selection Notes
Select this component when an NPN configuration with integrated biasing is required. Ensure the 0.22kΩ base resistor and 10kΩ emitter resistor values align with the target circuit requirements. Verify that the SOT323 package dimensions fit the available board space constraints.
Part Context
This component belongs to the DDTD series of NPN pre-biased transistors offered by Diodes Incorporated. It serves as the complementary counterpart to the DDTB series, which provides PNP configurations. Both series share similar electrical characteristics and packaging options for balanced design flexibility.
Replacement Considerations
DDTD142JU-7-F
FAQ
What are the nominal values of the built-in resistors?
The DDTD122LU features a base resistor (R1) of 0.22kΩ and an emitter resistor (R2) of 10kΩ.
Is this component suitable for automotive applications?
Yes, it is qualified to JEDEC standards for high reliability. For specific automotive change control requirements, consult the related automotive grade parts.
What is the maximum power dissipation rating?
The maximum power dissipation is 250mW when mounted on an FR4 PC board with the minimum recommended pad layout.
