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SMD SMT surface mount replacement or equivalent for 2SC992 KSA992 2SC1845 KSC1845 BC549 BC550 BC559 BC560 low noise BJT transistors

I made adaptor boards for Fets, like the 2SK100 using the JFE2140



And this version

52726259026_da5b2997df_b.jpg


Im sure it will work with other Fet's and possibly the BJT's mentioned above if they come in a SOIC8 package .

Athanasios
 
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tarior said:
I'm sure there are cheaper ones out there, but I like these:


No affiliation.
Click to expand...
thanks. i was hoping for boards with the pins on one edge but if the pins are on 2 edges, the ones i have on hand for the sop8 seem like they would work just fine..they accommodate .65mm on one side and .95mm on the other.



15 cents each vs $1 each. plus i already have them so.....

i'll have to get some 2SA1873 on hand to be sure.(figures that i had just put in a mouser order before this came up.)

saved your choice in my watchlist just in case. thanks again.
 
There is a person on ebay that has them listed, cheap too. Ordered a bunch but got a notice that my order was canceled for the reason of none in stock.

The Tupelvo board is posted in the Sansui 217 Restore thread they did.


painttoad said:
would you happen to have a link for the proper breakout board?
Click to expand...
 
painttoad said:
thanks. i was hoping for boards with the pins on one edge but if the pins are on 2 edges, the ones i have on hand for the sop8 seem like they would work just fine..they accommodate .65mm on one side and .95mm on the other.



15 cents each vs $1 each. plus i already have them so.....

i'll have to get some 2SA1873 on hand to be sure.(figures that i had just put in a mouser order before this came up.)

saved your choice in my watchlist just in case. thanks again.
Click to expand...
I also would like a board with the pins on one side. One will probably show up sooner or later.
 
Warren-Oates said:
There is a person on ebay that has them listed, cheap too. Ordered a bunch but got a notice that my order was canceled for the reason of none in stock.

The Tupelvo board is posted in the Sansui 217 Restore thread they did.
Click to expand...
i searched ebay before i posted and the only ones i saw, were populated.

i'm working on acquiring a handful of empty boards now.
 
Just a little notation on the boards I linked. One thing I really like about that supplier is that he is in the US and has his stock in the US. When I order boards, they arrive in a couple of days, rather than in two or three weeks from overseas suppliers. It's worth a little extra, IMO.
 
painttoad said:
thanks. i was hoping for boards with the pins on one edge but if the pins are on 2 edges, the ones i have on hand for the sop8 seem like they would work just fine..they accommodate .65mm on one side and .95mm on the other
Click to expand...

If you’ll precisely state what you / we are looking for, I’ll call that out in the first post of the thread… and then point to whoever posts a solution.
 
gadget73 said:
I've done this using a pair of TO-92 parts stuck together but its pretty awkward and looks bad. This is a tidier solution and I wager the thermal tracking is much better being on a common die like the original through-hole part was.
Click to expand...
With the Toshiba part I referenced, the gain matching is super tight, <1% difference as measured. Naturally, the mutual thermal tracking would be about as good as it gets.
 
2SK184 J-Fet can be replaced with a 2SK209. It is the same die in a TO-236 package.
Note that the 209 is only rated at 150mW compared to 200mW for the 184.

I have successfully used the 2SK209's in my Denon amps.

:beerchug:,
James
 
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