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The DDTC143TCA-7-F is an NPN pre-biased transistor from Diodes Incorporated, housed in a SOT23 package. It features built-in biasing resistors with R1 only, having a nominal value of 4.7 kΩ and a tolerance of ±30%. The device supports a maximum collector current of 100 mA and withstands collector-emitter voltages up to 50 V. Power dissipation is rated at 200 mW, with a thermal resistance of 625 °C/W. The DC current transfer ratio (hFE) ranges from 100 to 600 at IC = 1 mA, VCE = 5 V. Operating temperatures span from -55 °C to +150 °C.
Verify the exact ordering suffix against official documentation to ensure correct packaging and marking codes. Confirm that the component meets all relevant environmental compliance standards required for your specific application before finalizing procurement decisions.
Select this component when a single NPN pre-biased transistor with a 4.7 kΩ input resistor is needed in a compact SOT23 package. Ensure the design accommodates the specified power dissipation limits and operating temperature range for optimal reliability.
This part belongs to the DDTC (R1-only series) CA family, which includes various resistor values for different biasing requirements. The DDTC143TCA variant specifically provides a 4.7 kΩ input resistor, making it suitable for applications requiring moderate base drive currents.
Check for compatible parts within the same DDTC series or other manufacturers offering similar NPN pre-biased transistors in SOT23 packages. Verify electrical parameters such as hFE, VCEO, and PD to ensure functional equivalence.