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Product Detailed Parameters
- Description：TRANS PREBIAS NPN 200MW SOT323
- Series：*
- Mfr：Diodes Incorporated
- Package：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 DDTC144EUA-7 is an NPN pre-biased small signal surface mount transistor manufactured by Diodes Incorporated. It features built-in biasing resistors where R1 equals R2, with a nominal resistance of 47 kΩ each. The device operates with a supply voltage (VCC) up to 50 V and supports a maximum collector current of 100 mA. Electrical characteristics include a minimum DC current gain (hFE) of 68 at 5 mA output current and a transition frequency (fT) of 250 MHz. Power dissipation is rated at 200 mW, and the unit is housed in a SOT323 package.
Feature Summary
- Integrated biasing resistors eliminate the need for external input components, simplifying circuit design.
- Epitaxial planar die construction ensures high reliability and stable performance.
- Qualified to AEC-Q101 standards for automotive applications and capable of PPAP submission.
Applications
- Inverter circuits requiring integrated biasing
- Switching applications in automotive electronics
- General-purpose digital logic interfacing
Procurement Notes
Verify that the specific part number matches the required suffix configuration. Confirm compliance with RoHS 3 and REACH directives if environmental regulations apply to the assembly process. Ensure the ordering quantity aligns with standard reel sizes specified in the manufacturer's documentation.
Selection Notes
Select this component when an NPN pre-biased transistor with equal base and emitter resistors is required. Verify that the 47 kΩ internal resistance values suit the drive requirements. Check that the SOT323 package dimensions fit the available PCB space and thermal constraints.
Part Context
This component belongs to the DDTC (R1 = R2 Series) UA family from Diodes Incorporated. It serves as the NPN counterpart to the complementary PNP DDTA series. The device is designed for surface-mount technology applications requiring compact solutions for digital switching tasks.
Replacement Considerations
Complementary PNP types are available within the same product family. Other manufacturers offer equivalent digital transistors, but verification of pinout compatibility and electrical parameter matching is necessary before substitution.
FAQ
What is the relationship between the internal resistors R1 and R2?
For the DDTC144EUA-7, the internal biasing resistors R1 and R2 are equal, with a nominal value of 47 kΩ each.
Is this component suitable for automotive applications?
Yes, the device is qualified to AEC-Q101 standards and is PPAP capable, making it suitable for automotive use.
What is the maximum power dissipation rating?
The maximum power dissipation is 200 mW when mounted on an FR-4 PC board with the minimum recommended pad layout.
