I got an amp in to check over to make sure everything is ok with it before installing .
The amp is using IRFP3206 as the power supply fets with A1275,C3228 as the drivers .
There are a total of 6 banks of power supply fets in this amp each bank has its own drivers .
I noticed the power supply fets are not all the same date code in 1 bank they have one date code and another bank has a completely different date code . This amp has never been worked on before .
So my question is is this ok to run the amp like this or should all the fets have the same date code and be from the same lot ? There are 3 different date codes
The owner said he didn’t mind if they need to be switched out
The amp is using IRFP3206 as the power supply fets with A1275,C3228 as the drivers .
There are a total of 6 banks of power supply fets in this amp each bank has its own drivers .
I noticed the power supply fets are not all the same date code in 1 bank they have one date code and another bank has a completely different date code . This amp has never been worked on before .
So my question is is this ok to run the amp like this or should all the fets have the same date code and be from the same lot ? There are 3 different date codes
The owner said he didn’t mind if they need to be switched out
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This is 2 fets pulled from 1 bank .
They both say 818P but 1 of them says
LN PJ while the other says LN PL
Wondering would these be from the same batch or are the different ? Just wondering since one says pl and the other pj or is the 818 the number im looking for
Even the part number looks different as far as how it’s stamped
They both say 818P but 1 of them says
LN PJ while the other says LN PL
Wondering would these be from the same batch or are the different ? Just wondering since one says pl and the other pj or is the 818 the number im looking for
Even the part number looks different as far as how it’s stamped
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You probably have sticks of transistors that you purchased from a reputable distributor. In each stick, they should all be from the same batch. How do the markings from the individual sticks vary?
The sticks I have here I bought from mouser electronics all the markings on the fets match perfectly .
The ones that were in the amp however there are slight differences
The ones that were in the amp however there are slight differences
The 818 is the date code but the numbers below it could mean that they are from a different wafer. I'd prefer to see all of the numbers matching.