[PCB_FORUM] Thermal Pad vias-to-gnd plugged?

  • From: "Macindoe, Gary" <Gary.Macindoe@xxxxxxxxxxxx>
  • To: "icu-pcb-forum@xxxxxxxxxxxxx" <icu-pcb-forum@xxxxxxxxxxxxx>
  • Date: Wed, 25 Jan 2012 22:50:21 +0000

Hey guys,

When you have an IC with a thermal pad (e.g. A/D), the typical requirement is 
to put vias in the center pad that is connected to the gnd plane for heat 
wicking.

Do you worry about the solder paste going down the vias, even with a 10 mil 
drill? My coworker is concerned that this will happen.

I haven't had this concern, have never "plugged" etc. the vias with no negative 
feedback.

Regards,

Gary MacIndoe
Senior PCB Design Engineer
EbD R&D Hardware
Surgical Solutions Group
Covidien
5920 Longbow Drive
M/S A20
Boulder, CO 80301

303.476.7458
www.covidien.com

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