nRF52840, what is different between WLCSP and QFN?

RE: nRF52840, what is different between WLCSP and QFN?

duncanw — Mon, 05 Aug 2024 10:53:28 GMT

Hi Bulhar, Sorry for resurrecting such an old thread. Did you manage to find any suitable PCB suppliers? I find myself needing to design using the WLCSP package and anticipate similar issues.

RE: nRF52840, what is different between WLCSP and QFN?

ketiljo — Thu, 14 Jan 2021 12:40:56 GMT

I'm sorry, but we don't maintain a list of recommended PCB suppliers.

RE: nRF52840, what is different between WLCSP and QFN?

Bulhar — Thu, 14 Jan 2021 08:10:32 GMT

We are from Czechia middle Europe, but we can order boards from almost anywhere. Numbers are low, just prototyping, we accept higher price for this case. Could you please give me a recomendation?

RE: nRF52840, what is different between WLCSP and QFN?

ketiljo — Tue, 12 Jan 2021 13:40:26 GMT

It highly depends where in the world you are located, numbers and other requirements.

RE: nRF52840, what is different between WLCSP and QFN?

Bulhar — Tue, 12 Jan 2021 07:57:07 GMT

What PCB's house can produce PCB for BGA with drill 0.1 mm and outer diameter 0.2 mm. Could you please recommend some? Thanks in advance.

RE: nRF52840, what is different between WLCSP and QFN?

ketiljo — Thu, 12 Nov 2020 10:10:08 GMT

Packet size only. The silicon die is exactly the same. WLCSP is suitable when there's little room. PCB cost can be higher due to thinner tracks and smaller vias.