2N3866 PDF

This LC Meter allows to measure incredibly small inductances making it perfect tool for making all types of RF coils and inductors. The circuit includes an auto ranging as well as reset switch and produces very accurate and stable readings. The meter is a perfect addition to any power supply, battery chargers and other electronic projects where voltage and current must be monitored. It is a very useful bench test equipment for testing and finding out the frequency of various devices with unknown frequency such as oscillators, radio receivers, transmitters, function generators, crystals, etc.

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It is an HBT Darlington gain block. There are tons of equivalent parts available from distributors. You can use their parametric search tools to try to narrow it down. You will find you can often buy an MMIC amplifier for less than you could put together one from discretes. Well, 2n have a complement 2n and both cost pennies to buy in quantity. The only reason multi GHz smd transistors are available at low cost is because of mobile phone manufacture which has significantly reduced the price of these transistor devices.

Another important point of these transistors is that they are characterized for the GHz band only limiting there use other than what they are supposed to be used for. Most of the applications the OP mentions are above MHz.

But I understand it may be great for some applications. For RF, surface mount is your friend and becomes a necessity at higher frequencies. None of these transistors are used in mobile phones. Yes, mobile phones have spurred the technology development that has led to lower prices. But the semiconductor die is often the cheapest part of a discrete transistor. A wafer has maybe , die, all batch processed at once. So divide the cost of the wafer and process by , The die costs pennies, maybe less than one cent.

The cost is in the packaging and testing and handling. Of course for power devices the price goes up because die are bigger and packages are more expensive. It may not cost more and it might be easier and better.

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It is an HBT Darlington gain block. There are tons of equivalent parts available from distributors. You can use their parametric search tools to try to narrow it down. You will find you can often buy an MMIC amplifier for less than you could put together one from discretes. Well, 2n have a complement 2n and both cost pennies to buy in quantity. The only reason multi GHz smd transistors are available at low cost is because of mobile phone manufacture which has significantly reduced the price of these transistor devices. Another important point of these transistors is that they are characterized for the GHz band only limiting there use other than what they are supposed to be used for.

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2N3866 RF Transistor x 2

My preferred measurement is the point where the input impedance starts to significantly deviate from its mid- frequency value which is what I have shown above. Item 2 shows the output signal compression commencing at an input voltage of 1V pk- pk. A 2N has been used in place of the 2N with very similar results but the noise figure has not yet been measured. A small heatsink is required to cool the transistor. The dots show the phase of each winding. Inductors wound on toroids using the grade 43 material exhibit a small absorption notch of about 5 - 8dB at around KHz which almost disappears when the windings are fixed down with an adhesive.

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2N3866 Datasheet, Equivalent, Cross Reference Search

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