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Product Detailed Parameters
- Description：TRANS PREBIAS NPN 200MW SOT23-3
- Series：*
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Tape & Reel (TR)
- 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 DDTC143FCA-7 is an NPN pre-biased small signal surface mount transistor manufactured by Diodes Incorporated. It features built-in biasing resistors with nominal values of R1 = 4.7 kΩ and R2 = 22 kΩ. The device operates within a supply voltage range up to 50 V and supports a continuous collector current of 100 mA. Power dissipation is rated at 200 mW, with a thermal resistance (junction to ambient) of 625 °C/W. The unit utilizes SOT-23 packaging and functions across an operating temperature range from -55°C to +150°C.
Feature Summary
- Epitaxial planar die construction for reliable performance
- Integrated unequal biasing resistors simplify circuit design
- Qualified to AEC-Q101 standards for high reliability applications
Applications
- Switching circuits requiring integrated base drive components
- Automotive electronics systems meeting AEC-Q101 requirements
- General-purpose digital logic interface applications
Procurement Notes
Verify the specific ordering suffix against official documentation to confirm package type and reel specifications. Confirm RoHS compliance status and automotive qualification requirements prior to procurement. Ensure the selected variant matches the required resistor ratio and power dissipation limits for the target application environment.
Selection Notes
Select this component when a single NPN transistor with fixed internal biasing resistors is required to reduce board space and external component count. Verify that the 4.7 kΩ input resistor value aligns with the driving source impedance. Ensure the 22 kΩ output resistor meets the pull-down requirements for the connected load or subsequent logic stage.
Part Context
This part belongs to the DDTC (R1≠R2 Series) CA family of pre-biased transistors. It serves as the NPN counterpart to the DDTA series PNP devices. The 'CA' designation indicates the specific case style and resistor configuration. This series provides a compact solution for replacing discrete resistor-transistor networks in modern electronic designs.
Replacement Considerations
DDTC143ZCA-7-F: Features different resistor values (4.7 kΩ / 47 kΩ).
FAQ
What are the nominal values of the internal biasing resistors?
The internal biasing resistors have nominal values of R1 = 4.7 kΩ and R2 = 22 kΩ.
Is this component qualified for automotive applications?
Yes, the device is qualified to AEC-Q101 standards for high reliability.
What is the maximum power dissipation rating?
The maximum power dissipation is 200 mW at an ambient temperature of +25°C.
