This is a library of perfboard and single-sided PCB effect layouts for guitar and bass. I'm not an electrical engineer by any stretch of the imagination, just a DIY'er who likes drawing layouts. It is meant for the hobbyist (so commercial use of any of these layout is not allowed without permission) and as a way to give back to the online DIY community.

Tuesday, October 17, 2017

SMD to Through-Hole Conversion

There are a lot of circuits (a lot) that use J201/2N5457 JFETs. Sadly, these components in the TO-92 package are out of production, and many of those that can be found online are either barely within spec or completely out of spec. So I thought it would be good to have a conversion board to use SMD transistors (that are current production and much more consistent) in through-hole layouts. Just solder some header pins to the holes of this board and you're good to go. I've also done a conversion board for BJTs, as some common through hole transistors are already being pulled from production.


If you don't feel like etching, you can pick these up on OshPark. On this version one side is for JFETs, and the other is for BJTs with shared through holes. I've made a pseudo-panel of 9 boards so when you order them, you'll actually get 27 conversion boards (3 panels of 9).

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11 comments:

  1. Cool... I was just about to order more of these from eBay but these are way better because with the other boards the pinout ends up being wrong unless you spin the smd SOT-23 part and then it's tricky to solder. Just ordered them..... Thanks again bro!!!!

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  2. Thanks! Exactly what I needed.

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  3. PET FET!!!! https://www.guitarristas.info/foros/hazte-j201-2n5457-autenticos-pata-negra-unos-centimos/291354

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  4. Very useful. How come you don't have a flanger layout?

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    1. There are 2... Click the flanger tag on the left

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  5. Bought a heap of these pcbs from http://www.diyguitarpedals.com.au/shop/
    Was so much easier to match jfets.

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  6. Hi! Is there a PDF layout of this for easy scaling? Thanks!

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    1. It's in the utility folder in the Transfer Image Library

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