BC BC BC VCEO. – – – Vdc. Collector-Base Voltage . “ Typical” parameters which may be provided in SCILLC data sheets and/or. BC PNP General Purpose Amplifier. • This device is designed for general . This datasheet contains the design specifications for product. Part Category: Transistors Manufacturer: Motorola Solutions, Inc. Description: Small Signal Bipolar Transistor, A I(C), 50V V(BR)CEO, 1-Element, PNP, Silicon.
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In transistorr they are higher gain, lower noise types. Both transistors come in a variety of pinouts depending upon end letter so you need to ensure a match. Again I have plenty of the L variety. Aug 15, 6. Apr 5, 18, 3, The transistors in question are not actually necessary for the operation it should work perfectly without them.
Aug 15, 9. From that view I thought it was EBC? Nov 9, 5, Aug 17, Quote of the day.
BC Datasheet(PDF) – SEMTECH ELECTRONICS LTD.
Their function in the circuit puts a different light on which parameters are important. Studiot as soon as I can get to 10 posts I will PM you with the info.
Each year, new students are trying to make the same simple door phone. So please check if the centre terminal of TR12 is connected to the junction of R and Traansistor and not D5 or earth, and similarly the centre wire of TR11 to the junction of R and R Given the age of the amp and the usage it has had I have decided to replace the transistors and diodes that were affected in this circuit. How is the rest of the refurb going?
They work by monitoring the output darlington emitter currents across the emitter resistors, R and R You May Also Like: Aug 15, 4. What do you think and what circuit information do you have? On your drawing of the That is ratasheet makes AAC special – The high level of cooperation between members. They did not read short but as a precaution I feel that changing them would be better so that I don’t have to go back in it at a later date.
You transistoe log in or register to reply here. First of all hello to everyone and this is my 1st post here. To send a PM, left click a user’s name and choose send a private message. You like Yapanese parts? So the other transistors may be fine as they will not see the full rail. Studiot It is a model Current rating may be transistorr matter and why Marshall went for a mA transistor rather than the more usual mA small signal job, so we should stick with that.
Edit a rethink on the trahsistor ratings The output followers will have a voltage gain of about 1 so the earlier voltage amp stages gransistor the power amp will need to swing the bases of the darlingtons, depending upon the load For 8 ohms the peak required is about 40 volts for watts and 35 for 80watts For 4 ohms the peak is 28 and 25 volts For 2 ohms it is 20 volts and 18 volts.
Is there much difference and will it work in place of the BC?
First let me say that I have never worked on this particular model, so anyone with personal knowledge is welcome to chip in pun intended here. Posted by samy in forum: Your name or email address: I have an order transitor Mouser Electronics and this is the last item I need.
Now did you say you are refurbishing this amp? They form part of the protection circuit so if you are refurbishing you can remove them to get the main parts working properly.
But I have been staring at data sheets till I’m crossed eyed and have just one question. Frequency rating and gain will also not be a critical issue in this application. That was foolish datasyeet me. I did some scouting on the internet and found dataseet recommendation of using a BC as a substitute.
BC212 Transistor Question (Marshall amplifier repair)
Here’s a scheme for 9 voltages from 2. You should have an email to reply to. I’m replacing a BC transistor and of course they are obsolete. Welcome to our site!
Aug 15, 5. May 3, The and were complementary.
The BC has a current rating of mA and a frequency Ft of MHz, whereas the has a currrent rating of only mA and and Ft of MHz so you need to check the application here.