This place is incredible! Thanks to all for your answers.? Yes, I guessed also either a transistor or a MMIC but lazily I tried here first and I was right!
Andreas it looks exactly like in your
Rainer, They look similar but mine have 3 equal legs, yours have one longer so my money's rather on Andreas fet. (maybe)
Frank, awesome it is indeed! Unfortunately there's no known TEK576 around but I would happily send you some if you know where to do it.
Andreas again, pm me your address and I'll happily send you a couple for your HP8405A, free of charge of course.
Renaud
