Parenthesis transistors

[Sabardo]

Is there equivalents for Parenthesis transistors because all of those are either discontinued or atleast really hard to get in Europe?

 

[Nostradoomus]

www.uk-electronic.de seems to have them all

 

[Chuck D. Bones]

There are too many equivalents to list here and we don't know what you can get.
Q2 and Q4 can be any medium or high gain silicon NPN. Q3 can be any medium or high gain silicon PNP. Q1 and Q5 are used as source-followers, so most N-channel JFETs will work. Try subbing any low-power N-channel MOSFET for Q6. Use sockets. Read the datasheets to make sure that the pinouts are compatible.