Trying to get a Leader 100mhz scope back in action, the Y axis drifts and this post seems to say a dual FET could be a cause:
https://www.electro-tech-online.com/threads/2n30809-dual-fet.104271/?hig...
The number seems wrong, and could it be a 2N3809? Schematic seems to indicate Q23A/Q23B is that part number.
I have uploaded the SM for the LBO-518 scope to the manuals section.
Someone on a ham radio forum said they have a LBO-516 plus a parts unit and
turns out it uses the same kind of dual FET. In that drawing its a ITS3809 as per the
parts list of the SM. SM for this is also in the manuals section as well.
More searching says there is a mil spec type part under 1853-0269 that may be the same.
Can anyone confirm what the part number is to use or a sub part that would work
?
Hi!
Some suitable types for that position:
https://www.ebay.com/itm/124499147254
https://www.ebay.com/itm/300963337754
https://www.ebay.com/itm/AD3956-Analog-Devices-Dual-N-Channel-FET-6pin-G...
https://www.ebay.com/itm/303504377427
K und K
1
its30809
q9 q49 58.oldal
2
Thank you for the help. I got the AD3956 - 2 pcs. Turns out a 2N3956 is the same design. I will post results here once I install !
0