Searching for replacement MOSFET for old design (TI EP2500)

Thread Starter


Joined Nov 24, 2016
I have a very old design of an ultrasonic cleaner which has 2 MOSFET transistors and I cannot locate the part number in TI. The parts clearly have the TI logo but the part number "EP2500" does not appear in TI's list of parts. The date code appears to be "A7949" which I am assuming to mean 1979 and week 49 which is inline with the age of the design. The part package size is a TO-220, the voltage rating is likely 200 or 300V, and it would have to be a N-channel device based on the circuit configuration. Unfortunately, the original design notes are long gone. Hopefully someone has an old TI data book to find out what this part's specs are.