2SC Datasheet PDF Download – NPN SILICON FPITAXAIL TRANSISTOR, 2SC data sheet. Description, NPN Silicon Fpitaxail Transistor. Company, ETC. Datasheet, Download 2SC datasheet. Cross ref. Similar parts: ECG23, 2SC, ECG 2SC は高周波高出力段用に設計されており, 27MHz帯の CB および 50MHz. * C – 7 BRISLIT. GEOT DAMEMO,. 短絡に対する耐破壊強度が大です。.

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Subject of the new topic: Also keep harmonics in mind! But, as a passionate homebrewer, I thought to myself: Just offhand, anyone have practical experience in datashwet a 2SC for a 2SC? Based on these prerequisites, here are the main ideas for this radio: That said, I was wrapping up my NorCal 40A 40M rig, plugged both into the board, and obtained similar results. So, first I went through literature to avoid fulminant project failure which is more probable when making serious datqsheet that can easily be avoided by careful planning.

Therefore an additional amplifier is required.

The fake is on the right. OK, a high valued emitter bypass capacitor hands you back a lot of gain but unfortunately not equally distributed over the frequency span. If they are counterfeits, ask Datasheft if you used this for payment for a refund. These are seperated by the input transformer and are put together again by the output transformer: The price for 6 pieces was abt.

Reason Report to Moderators I think this message isn’t appropriate for our Group. So fakers will make their profit by selling counterfeits of these parts.


I use CB transistors with a relatively high transition frequency ft of about MHz or even higher. Emitter degeneration in a transistor amplifier stage The unbypassed capacitors causes a voltage drop when emitter-collector current rises. You may ask why I used 2 push-pull stages.


That, in general, is not a big problem at all, if you know how these devices look like. The transformer is followed by an amplifier. But, no need to get desperate: Method 1 usually involves stray capacities, so signal seperation is far from being overwhelming. And, because a push-pull amp offers built-in even-harmonics suppression, the production of overtones is limited by this circuit without the need for filters.

My simple answer then is: Each time I get a new package of RF power transistors today, the first step is to check them out in the former CB rig if they are able to deliver the desired output power. VFO and LO frequency considerations In this transceiver the interfrequency IF is 10 MHz which is based on the fact that respective crystals can cheaply be purchased in larger quantities to build appropriate ladder filters with.

There are three sections in which band switching must take place in my rig: The effort, by the way, paid. Here are two sites that might be interesting: I had two cases of faked semiconductors the recent year. So, after some days of conceiving, I finally had the basic concept in mind. So the transceiver theoretically can be operated down to 10 Volts DC without any danger that the band relays might not switch correctly. I really had been deceived.


Two dc outputs are available. Each relay gets about 4 volts of coil voltage then drawing about 40 mA which is more than enough because my OMRON relays start reliable switching from a coil voltage of about 3.

RF Power Transistor

One of the reasons for this was improper shielding of the band filter section that follows the TX mixer. Please note that you need a preamplfier if you run that 2dc1307 type by a DDS because the outputlevel of a DDS if not amplified does not suffice the 7 dbm a diode ring mixer needs for proper operation.

Again this is to avoid the repeated soldering process ruining my Veroboards: But it things were more complicated when you wanted to cover the other ham bands with only one VFO. Effective decoupling is a big problem with this on the other hand cheap and handy method.

The main problem with transistor amplifiers mainly those designed for rf purposes is the gain-vs-frequency problem. Must be able to seperate strong out of band signals broadcaster etc.

Difference between 2SC and 2SC

Demonstration how to solder rf transformers to a Veroboard. But avoid those Cinese websites were you can find the next bunch of fakes.

Some months later I needed to replace the final amp transistor of one of my rigs and wanted to give one my recently purchased 2SC the debut.