Can't find 40 ppm 16MHz Crystal

[Kapil Rawat]

Hi

officially for the nrf51 chip, 40 ppm frequency tolerance recommended but I'm not able to find this much of tolerance in digikey.

The only matching crystal digikey crystal but it has 15 ppm tolerance.

If I use this how it will effect my custom board as I'm using single crystal only.

[RK]

As long as the tolerance is BETTER than 40ppm it'll be fine, 40 is the minimum tolerance. So 15ppm will of course work perfectly.