Bo Hansen DI layout

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Whoops

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BC560C and BC550C

and many others small signal BJT transistors, these are just a few

BC550C = BC550B, BC549B/C, BC548B/C, BC547B/C, BC414B/C, BC337-25/40, BC237B/C, BC184B/C, 2N3391A, 2N3904, 2N4401, 2N5088, 2N5210, MPSA18, 2N3707, 2SC1775-AE, 2SC1815-GR/BL, 2SC2240-GR/BL

BC560C = BC560B, BC559B/C, BC558B/C, BC557B/C, BC416B/C, BC327-25/40, BC307B/C, BC214B/C, 2N3906, 2N4403, 2N5087, 2N3703, 2N4058, 2SA872-AE, 2SA1015-GR/BL, 2SA970-GR/BL
 

johnsmith1234

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BC560C and BC550C

Your post came at the perfect time, I was just about to start soldering. Yes, I mistakenly thought I had read that the two are interchangeable but I don't believe this to be the case in reality. One is a PNP and the other is an NPN

Oh well, one more part to order I guess and then I can get down to building this DI :).

No doubt this post saved me a few hours in troubleshooting time.

Thanks.
 

rsasgtr

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and many others small signal BJT transistors, these are just a few
Of course. Just wanted to make sure they don't put two of the same transistor.
Your post came at the perfect time, I was just about to start soldering. Yes, I mistakenly thought I had read that the two are interchangeable but I don't believe this to be the case in reality. One is a PNP and the other is an NPN
Exactly. I've seen that mistake before, so I replied as soon as I saw your summary.
It's good that you edited the original post.
No doubt this post saved me a few hours in troubleshooting time.

Thanks.
Good luck with your build!
 

mhelin

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How much amplification would you get if you swapped the NPN and PNP (using BC560C and BC550C for an example, obviously the collectors to emitters as well)?
 

[silent:arts]

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This year I've been in a few situations where I would have liked a Stereo Bo Hansén DI. As small as possible, and with an optional external PSU if there is no Phantom power available at the venue.
So for Christmas, I did this present for myself:

00DEE1F2-95CE-4378-A49B-877D6ACC366E.JPG

Happy new year everyone, and thank you @Bo Hansen for this fantastic sounding DI Box.
 

5v333

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Jun 30, 2013
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I made theese a couple of years ago and been using them at live gigs (bc (before covid)) . Really cool sound on acc.
 

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