Phase 90: Matched 2N5952 or just any J201

[JackSkellington]

Thank you, I'm considering right that. I still have to do some calculations because I think I can spend less if I buy the single part somewhere else.
Probably I'll buy the matched transistors. I just have to wait the availability there or in another shop.

[Marshall Arts]

In my experience, the smd j201s are extremely accurate in that they are pretty well all the same tolerances. Again, that's just in my experience, I used them in a harmonic tremolo.

Just wanted to confirm that experience: I just measured 10 SMD (MMBF201) and 10 TO-92 J201 and the tolerances on MMBFJ201 (SMD) are much tighter than on the traditional TO-92 J201. Measured using the runnoffgroove-Method (http://www.runoffgroove.com/fetzervalve.html).

The Range of the ROG measurement was:
average Vp: -0.83V (spanning from -0.57 to -0.97)
average Idss: 0.64mA (spanning 0.30mA to 0.83mA)

My Result:
100% of the SMDs are in the ROG-range.
0% of the "traditional J201 are in the range (probably all fake...)

Might be a question of sourcing as well, the SMDs are from Musikding (for sure), the J201 I am not sure about. Just ordered cheap ones from ebay, will measure those, when they arrive.

[JackSkellington]

I could order the MMBFJ201, eventually, from Tayda, just because they are cheaper than the ones from Musikding.
I'm not talking about my Phase 90, but for any other project.

Meanwhile, I ordered a quartet of 2N5952. Not cheap, but it will work for sure.

[stringsthings]

In my experience, the smd j201s are extremely accurate in that they are pretty well all the same tolerances. Again, that's just in my experience, I used them in a harmonic tremolo.

Just wanted to confirm that experience: I just measured 10 SMD (MMBF201) and 10 TO-92 J201 and the tolerances on MMBFJ201 (SMD) are much tighter than on the traditional TO-92 J201. Measured using the runnoffgroove-Method (http://www.runoffgroove.com/fetzervalve.html).

The Range of the ROG measurement was:
average Vp: -0.83V (spanning from -0.57 to -0.97)
average Idss: 0.64mA (spanning 0.30mA to 0.83mA)

My Result:
100% of the SMDs are in the ROG-range.
0% of the "traditional J201 are in the range (probably all fake...)

Might be a question of sourcing as well, the SMDs are from Musikding (for sure), the J201 I am not sure about. Just ordered cheap ones from ebay, will measure those, when they arrive.

Cool.  I'll have to get some SMDs on my next Mouser order.