jeremysf gravatar image

Posted 2015-10-27 04:29:50 +0100


QFN-48 socket "programmer" for flashing nRF51

Here's a link to the EagleCAD files for a QFN48 socket to J-Link/JTAG 20-pin connector to program bootloaders, etc for Nordic nRF51:

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I included a USB connector as an alternative to using the 5V power from the J-Link, but haven't had to use that yet; the power from the J-Link device works great!

I also included a 16MHz crystal in the design so that I could boot up the nRF51 and do some basic validation. Probably could get away without populating those or related components.

The socket is available on and for about $100 it's a QFN-48(52)BT-0.4-01 manufactured by Enplas.



Anders Strand gravatar image

Posted Oct. 27, 2015, 3:26 p.m.

Very nice post, thanks for sharing!

smtoraskar gravatar image

Posted Oct. 29, 2015, 3:29 p.m.

Extremely useful for many of us.... Thanks a lot.

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