I'm looking at this Instructible:
https://www.instructables.com/id/3-channel-Dimmerfader-for-Arduino-or-other-microco/

I want to be able to dim a pair of bedside lamps with an Arduino.

The Instructible says to use this TRIAC:
https://www.eoo-bv.nl/triacs/1636-t1m5f600a.html
But I can't find that specific one anywhere. I've used relays a few times, but not TRIACS, so I want to make sure that I get the right one.

Is this one: https://www.digikey.com/scripts/DkSearch/dksus.dll?Detail&itemSeq=243118301&uq=636456428233666383 the same?
Or close enough?

The mains voltage is 120VAC (American) so I may be able to get away with something less than 600V.

 

The digikey link doesn't give a triac type number.
These are a very good match to the original - but check the pinouts.
https://www.digikey.com/products/en...t=0&page=1&quantity=0&ptm=0&fid=0&pageSize=25

[EDIT] But they haven't got any

 

Try this one (again check the pinout): https://www.digikey.com/product-detail/en/ween-semiconductors/Z0107MA0412/1740-1209-ND/2780435