J201 Subs??? Cobalt Drive aka Blues Driver

EZS

Well-known member
Theres a total of 4. Has anyone built or know of a successful substitute in this circuit?
Thanks in advance.
 
I used the smd versions Robert mentioned in my bd clone worked great. The pre soldered ones in the store make it easy.
 
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Antique tube supply has the Fairchild J201 in stock, oddly enough the MMBFJ201's are not. I have a wholesale with their sister company CE Dist, and I've been buying from them since they opened 24 years ago. Reputable company!!!


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Why are these $4.95 but smallbear has some for $1.49 ? Are the ones at small bear questionable? Mouser used to have Fairchild’s but they are all gone now.
 
Antique tube supply has the Fairchild J201 in stock, oddly enough the MMBFJ201's are not. I have a wholesale with their sister company CE Dist, and I've been buying from them since they opened 24 years ago. Reputable company!!!

$5 for a piece? You can buy ten MMBFJ201 for $5...
 
$5 for a piece? You can buy ten MMBFJ201 for $5...
You are aware the mmbf are smd? So most people can't use them unless they've been soldered to an adapter. Adapters on PPCB sell for 50 cents, and then there's labor. I was able to find some adapters at CE Dist 0.22 each for 100 and got 100 of the mmbf's for 0.37 each both figures include freight. Now that's .59 each and they still need to be soldered together, so no labor $ for me since I'm retired and the government pays me whether I watch tv or solder, lol.

This was back in November, and NO body had them in stock. Since then CE Dist does, and from reading smallbear they found about 1000 of them and put them on sale for a *great* price. Kudos to them, but NOS discontinued products have wildly varying prices....
 
Why are these $4.95 but smallbear has some for $1.49 ? Are the ones at small bear questionable? Mouser used to have Fairchild’s but they are all gone now.
It says at smallbear that they found them in their old stock section, they didn't have any a couple months ago when I looked. And they have 1000+, when they are gone, THEY ARE GONE. CE Dist is buying them *someplace* and of course has to pass the cost on to the customer to stay profitable.
 
Since the pro-soldered ones are currently sold out. these


soldered to these


If you’d prefer pre-soldered and can’t wait for the restock, Aion’s got stock of theirs right now

If pedal pcb is out or the pre soldered ones. Aion does offer them as well.
 
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If you can get the SMT ones you can get these adapter boards for super cheap on oshpark. Also the original didn't use J201, so you could find the original transistor as well which I believe is 2sk117/2sk184/2sk209 depending on package.
 
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