[Sidnicious]

This one is ever so slightly smaller at 3.25 x 8.55 x 0.85mm: https://www.mouser.com/ProductDetail/TAIYO-YUDEN/EYSHSNZWZ?q...

Six of them fit on the face of a dime, which is wild.

[thmsths]

Unlike the FDK module, this module requires an external crystal oscillator, which makes me think that the total footprint ends up being larger.

[teleforce]

To be fair to Silicon Labs, they don't claim the smallest BLE module but FDK did exactly that [1].

[1] The world's smallest Bluetooth® Low Energy Module, the new model "HY0021":

https://www.fdk.com/whatsnew-e/release20241021-e.html