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Subject:	Re: [geda-user] Microphone footprint woes
From:	"Richard Rasker (rasker AT linetec DOT nl) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To:	geda-user AT delorie DOT com
Date:	Sun, 23 Aug 2015 18:56:40 +0200
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Spacefalcon the Outlaw schreef op zo 23-08-2015 om 16:12 [+0000]:
> Hello fellow free EDA users,
> 
> I need to put a microphone on my GSM development board, and I am
> having an awfully hard time finding any guidance in part manufacturer
> datasheets as to what the PCB land pattern should be.  Here is one
> representative part for the kind of microphones I'm looking at:
> 
> http://www.digikey.com/product-detail/en/TOM-1242L-NF-R/668-1181-ND/1464920
>
> But the manufacturer's datasheet (linked to from that Digi-Key page)
> is utterly unhelpful when it comes to drawing a PCB footprint.  The
> drawing depicts the overall circular shape of the part, but provides
> no guidance whatsoever as to the shape, size and placement of the SMT
> pads for the two terminals.

Hello,

Correct me if I'm wrong, but I don't think that this is an SMD part, and
that you're supposed to simply solder wires to the contacts.

For SMD type microphones, search for "MEMS Microphone", e.g.
SPW2430HR5H-B from Knowles.

Best regards,

Richard Rasker

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