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SMD Transistors

Shourov001

Hello, I am making a digital logic project that requires SMD NPN transistors there are a lot of transistors but which transistor should I choose?BC847, BC817,2N3904, SS8550, SS8050 Please help me to choose one among them.

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  • Transistors are selected for speed, transfer parameters (hFE, etc.) voltage, and current requirements. What are the conditions your digital logic is working under?

    Just for completeness, listing a few additional selection criteria, primary used in non-digital circuits: noise, heat transfer, high frequency impedance parameters, capacitance, reverse voltage breakdown, leakage current. Many charted over various other conditions, like temperature.

  • in reply to ggabe

    I am planning to make 8-bit adder with those transistors! after reading all the datasheet I decided to buy ss8050. Should this transistor work for this application?

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