Quick reminder that the little brother of the MicroFC-60035, the 3 mm version MicroFC-30035 ist back in stock! You can buy one on Mouser and use it just like the bigger 6 mm SiPM. The only real difference is the active size which is now 9 instead of 36 mm^2. Stock is currently only at ~380 pieces, so expect it to sell out sooner than later again.

Here's a link to Mouser.com: https://mou.sr/3MS5fz2