Marshall Amp GR100RCD Transistor Help

[pmonti244]

I need to replace two transistors in my Marshall GR100RCD Amp, they are 2SA1386-P and 2SC3519-P. I searched on the web and was only able to find a datasheet for the 2SA1386-P which called for negative values for VCBO, VCEO and VEBO. All the other datasheets I found were for 2SA1386-2SA1386A and 2SC3519/2SC3519A which calls for positive VCBO, VCEO and VEBO values.



This is where I get confused can anyone tell me what the –P means.



In addition if anyone can tell me where I can get replacement transistors and what part number I should be looking for. I would greatly appreciate it.


Thanks

[nigelwright7557]

-p probably means plastic cased.

Look up the other numbers and see if they look like your transistors, if they do they will likely work ok.

You need to put your location on so we know how to help you better finding components.

[Enzo]

The NPN vs PNP-ness of a transistor is indicated by the 2SC or 2SA starting the part number.

Some transistor makers spec PNP types with negative voltages. Others just list all voltages as positive - or at least no polarity indicated. Nothing cosmic there, you can;t install an NPN with the negative at the collector and positive at the emitter and expect it to work. SO don;t read more into it than is needed. They are all the same part.

And I'd agree that P probably means plastic. Are your old ones of the fully insulated tab variety? Similar to a TO3P?

Wherever you find those type numbers, the parts will be right.


MCM has both for a little over $3 each.