[sdiy] Another LM13700?

Gordonjcp gordonjcp at gjcp.net
Wed Jun 14 10:57:08 CEST 2023

On Wed, Jun 14, 2023 at 08:17:25AM +0000, Mike Bryant wrote:
> Actually a set of masks for a transistor or simple IC on a large process is under $10k now.  But yeah, if TI have subcontracted their manufacturing to you, then you may as well make some for yourself.  Almost every small-signal transistor in the world is now made in a large fab in Changjing where they turn out tens of millions an hour.  If that fab has a fire it won't be super-expensive SoCs or memory holding back the industry users, but 2N3904/BC547/name your favourite transistor.

I'm nearly halfway through my bag of 1000 BC548s that I bought off Some Dude In China On eBay for a fiver, nearly ten years ago now.

I should order more, just to be safe.


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