nRF5340 - What is the size of pad A1 and the other three peripheral pads? I don't see the dimensions in the data sheet.

[borgestrand]

nRF5340 - What is the size of pad A1 and the other three peripheral pads? I don't see the dimensions in the data sheet.

Thanks,

Børge

[Kaja]

Hi Børge,

could you elaborate? 



Best regards,
Kaja

[borgestrand]

Hi Kaja,

I struggle to see the diameter of A1 in this drawing and in the datasheet. 

Best regards, 

Børge

[Kaja]

So A1 is the height from the chip to the end of the pads, the diameter of the pads is listed as b in the drawing. 

Best regards,
Kaja

[borgestrand]

Ah, I was actually referring to pads A31, AL1, AL31. On the drawing and on pictures of the nRF5340 these pins seem to have a larger diameter than the b=0.2mm size of all the other pads (except the center pad). 

Please let me know if you can provide a diameter specification for pads A1, A31, AL1, AL31. For the time being I have used a diameter of 0.4mm in my CAD files.

Best regards, 

Børge

[Kaja]

Okay, 

they are all the same size:


If your referring to the reference design:


Some of the pads has an extra grey circle around it to mark the via hole going through the pads.

Best regards,
Kaja   

[CheMax]

I can assume that the question is about the pads that I circled in green. They are the only ones that fit his description (A1, A31, AL1, AL31) and they are really larger in diameter)))

Sorry, I just walked by)

[Kaja]

Good point! 

Yes, the diameter on these in the reference desing is 0.406 mm. 

[borgestrand]

Thanks Kaja, I'm glad you saw my point. Have a nice weekend!

All the best,

Børge