I have a 500W switched mode power supply and a pair of J13009 transistors have failed. I mistakenly thought a J13009 was a J13009. What arrived was TO220 instead of TO247. Can J13009 really have two different specs for the same model number? I can only find a datasheet for the TO220 I bought, not the original TO247 size. The power supply is only a couple of years old.
Should I fit them anyway?