What is resistor R2 (39Ω) for?

Resistor R2 of 39Ω is connected in series between the SWD header and the RESETN pin of the CPU.

I wonder why it is a 39Ω resistor and not a more common value like 47Ω ?
I have a library of resistors at my PCB maker but 39Ω is not one of them. I do have 47Ω there.
I wonder if I can swap the 39Ω for a 47Ω one or is there any particular reason why it needs to be 39Ω?

Can you show the schematic?

Sure. It's here: https://content.arduino.cc/assets/MKRWAN1310V3.0_sch.pdf

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And the tutorial page link?

What are you talking about?

I think so.
I don't see any reason for the 39ohm choise there.
Maybe they wanted to get rid of old stock.

You can always piggy-back a 220 ohm resistor on top of the 47, if.. it gives problems.
Leo..

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