nRF5340-CMAA replacement?

RE: nRF5340-CMAA replacement?

Samruddhi Jadhav — Fri, 11 Sep 2026 12:01:46 GMT

Hi Samuel,

As I mentioned in my previous response, CMAA has larger solder balls than CLAA. To compare this it is 0.19-0.25mm vs 0.12-0.18mm. This can result in problems with the soldering as CMAA footprint has larger pads than CLAA. It should be fine to solder a CLAA on a CMAA footprint but we do not recommend that you do this in production. You also don't have to change anything in the radio match as CLAA and CMAA have the same matching network.

Please let us know if you have any further questions.

Best Regards,

Samruddhi

RE: nRF5340-CMAA replacement?

Samuel Carey — Thu, 10 Sep 2026 14:14:17 GMT

Can you please confirm if the CLAA will or will not fit on CMAA pads? Also, please confirm that the RF will require different matching characteristics. The CMAA is currently unavailable and I need to know if I can use CLAA as a replacement.

RE: nRF5340-CMAA replacement?

Samruddhi Jadhav — Mon, 27 Apr 2026 14:42:03 GMT

Hi,

The nRF5340-CLAA isn't recommended for new designs. The CMAA is a newer addition. In contrast to CMAA, the CLAA has smaller solder balls so there may be a chance that it doesn't properly fit on same landing pads. Also, CMAA and CLAA have different mechanical dimensions and internal bonding. This means that the footprint for the PCB will need an update and so would the RF matching network.

Best Regards,

Samruddhi