https://devzone.nordicsemi.com/f/nordic-q-a/58012/2450fm07a0029-alternativeHello, We are in pre-production and we need to make 1000 prototypes. Here is the filter we planned to use : https://www.johansontechnology.com/datasheets/2450FM07A0029/2450FM07A0029.pdf This filter is out of stock... Delay to have it is too longen-USTelligent Community 13Fri, 08 Oct 2021 03:17:06 GMThttps://devzone.nordicsemi.com/thread/333154?ContentTypeID=1Fri, 08 Oct 2021 03:17:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f76b8085-b7e8-4580-81c9-b756b67fe604bstarbuck3<p>Will the&nbsp;2450FM07A0029 also filter out the 2nd and 3rd harmonics which I read that the C3 &amp; L1 also contribute to the design thereby making them irreplaceable.&nbsp; Or is it fine to just use this balun instead?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/235270?ContentTypeID=1Wed, 19 Feb 2020 17:01:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9af2e6c3-e445-4a85-ad4a-c0ba494b0a29ketiljo<p>The&nbsp;2450FM07A0029 is a special part designed just for the nRF52832 and there&#39;s no substitute for this part. I suggest you use the discrete matching network instead with one shunt capasitor (C3) and one series inductor (L1) that you can find in the<a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52832.ps.v1.1/ref_circuitry.html#schematic_qfn48_ldo"> reference schematics</a>.</p> <p>Note that you need tuning components or the antenna. I recommend placing a pi-filter between the matching network and the antenna, more in <a href="https://infocenter.nordicsemi.com/pdf/nwp_017.pdf">this whitepaper&nbsp;</a>&nbsp;Without the antenna tuning components, you have no means of tuning and optimizing the antenna for your design.</p> <p></p><div style="clear:both;"></div>