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Old 24th January 2007, 01:05 AM   #1
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Default Transistor Equivalents

I'm looking to replace some toasted-looking transistors in a Musical Fidelity B200 but am having trouble sourcing two of the small transistors. Here's the schematic:

Click the image to open in full size.

The offenders are TR1 through TR4, but I can easily find the TIP32C and TIP31C. The ones I'm asking about are:

TR2 - BC416C
TR4 - BC414C

Here's a shot of TR4. TR2 is the exact same package.

Click the image to open in full size.

Any help would be greatly appreciated.
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Old 24th January 2007, 02:28 AM   #2
CBS240 is offline CBS240  United States
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Well, seeing as how they are uses as a CCS, they could probably be replaced with any small signal part such as a BC850 or BC856, just make sure the pins are the same. If you use a fast transistor, you might include small cap(100pf) across collector to emitter to prevent oscillations.

All the trouble I've ever been in started out as fun......
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Old 24th January 2007, 02:32 AM   #3
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Hopefully this datasheet displays.It has both BC414 & 416...Nuts it dont . Register at this site.Its free factsheets ,search # 83 for BC416 and both 414 and 416 come up
Ret. USAF... AKA- Avionic *** Solder slinger for hire...***
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Old 24th January 2007, 03:18 AM   #4
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ok, thanks turns out the amp works after all, don't need to get replacements, but this might help someone else who needs help with their musical fidelity...
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