Availability of the 15nH inductor used in the DCDC buck

[mmkunz]

The 15nH inductor specified in your example designs Taiyo Yuden's HK100515NJ-T is not available.  A recommend replacement is Johanson L-07C15NJV6T (Digi-Key).  Is this part ok to use or are there any other 15nH inductors Nordic can recommend?  What about Pulse Electronics' PE-0402CL150JTT?

Thank you.

[Priyanka]

Hi Matt,

Any inductor that meets similar attributes can be used, for instance this inductor.

Best Regards,

Priyanka

[mmkunz]

Thanks Priyanka!

I noticed the inductor has a polarity mark.  What's the mark for on these inductors?

Matt

[Priyanka]

Hi Matt,

The polarity marking is to show the right way of installation, (though the other way is not going to be dangerous). But you can take a look at this post about polarity marking which says that the inductor value is affected when placed in different directions.

-Priyanka

[mmkunz]

Thanks for the information Priyanka!