[DRA829] SOM Schematic has "NFM15HC105D0G" and "NFM18HC106D0G"

Koro-san,

These are Murata part numbers for 3-terminal capacitors.  You can reach out to your local Murata rep for details.

Regards,

Kyle 

As Kyle has mentioned, these are Murata PNs for new, very low ESL capacitors. Using these lower ESL caps should reduce total qty of decoupling caps by 6-8x factor as compared to standard 2-terminal caps in order to achieve same PI performance (Z vs. F response).

I’ve attached a PDN study (see below) that compares 2-term vs 3-term Dcaps conducted by Murata using our J6Plus Reference Design PCB. In summary, using 3-term caps on SoC & DDR allowed total qty to be reduce by 38pcs (22 less for SoC & 16 less for DDR) leading to 37% Dcap area reduction while achieving same ZvF response. This can become compelling when limited PCB area & heavy processing loads are required.

To avoid single source issues, we have identified 2 capacitor manufacturers (Murata & TDK) with same size (0603) 3-term, automotive qualified caps PNs (NFM18HC106D0G3 & YFF18AC0G475M). We’ve conducted PI simulations to verify that either cap provides desired ZvsF response for J7ES PI even though these caps have different capacitance value (10uF & 4.7uF).

Our cap representatives mentioned these 3-term caps are fab on new production lines that presently are not presently subjected to high ceramic cap demand & long lead-times since not many customers have ramped new designs with them. Reducing total Dcap qty/board & system while achieving desired PI performance should help reduce total demand, lead-times & offset any individual component cost difference.

Here's our Murata sales representative recommendation for customers needing more information & support:

If customers are already working with or know a local Murata rep, they would be the best go-to.  Please feel free to provide my email address and I can redirect them.

Best Regards,

Roger Lai
Sr. Business Development Engineer
Murata Electronics N.A., Inc.
4100 Midway Road, Suite 2050, Carrollton, TX 75007
(214) 449-2097 | rlai@murata.com | 

Here's our TDK sales representative recommendation for customers:

Tom Motoki (Tom.Motoki@us.tdk.com) will be the global point of contact for TDK 3 term caps for your designs, that way he can direct the information to the appropriate folks geographically if your customers need samples, data, etc.  We are also anticipating this part will be released to the web in Nov or Dec this year.

Tom Motoki
Sr. Product Marketing Engineer, Multilayer Ceramic Capacitors
TDK Corporation of America
Direct: (714) 934-7337

2148.Murata Capacitor for Jacinto 7.pdf

Kyle-san

Thanks a lot

Br

KORO

Hello Bill-san

Thanks a lot.

And I understood.

> In summary, using 3-term caps on SoC & DDR allowed total qty to be reduce by 38pcs (22 less for SoC & 16 less for DDR) leading to 37% Dcap area reduction while achieving same ZvF response.

Br

KORO

Please find bellow additional feedback from Murata on current production & website support status:

The NFM PNs are in Mass Production, but for limited customers the remainder of this year due to capacity.  This is tied in to the recent MLCC shortage situation as our factories have been busy with the expansion plan, but overall MLCC outlook from Murata is looking much better.  Nevertheless, during this time, samples will be provided free of charge to any customers using Jacinto.

Regarding release of information to our website, the new parts will be publicly viewable on our website by the end of this year.  I do apologize for the inconvenience, but we will share all information directly with customers who are using Jacinto.

Thank you!

Best Regards,

Roger Lai

Hello Bill-san

Thanks a lot.

Br

KORO