[SI-LIST] Re: Heatsink acting as EMI shield.
- From: Zhangkun <zhang_kun@xxxxxxxxxx>
- To: trilok.budathoki@xxxxxx, si-list@xxxxxxxxxxxxx
- Date: Thu, 15 Jul 2004 15:33:20 +0800
Dear Trilok
Even if the heatsink is connected to the ground, it also could act as one
antenna of EMI because the ground is not clean enough. The primary method is to
lower the power ground noise at the location of the heatsink by means of local
decoupling.
Hope this will help.
Best Regards
Zhangkun
2004.7.15
----- Original Message -----
From: "Budathoki, Trilok (GE Consumer & Industrial)" <trilok.budathoki@xxxxxx>
To: <si-list@xxxxxxxxxxxxx>
Sent: Thursday, July 15, 2004 3:13 PM
Subject: [SI-LIST] Heatsink acting as EMI shield.
> Hello Everyone
>
> I was read an articles that mentions the PGA & BGA packages have an efficient
> heatsink on the top of the package, which not only serves to dissipate the
> heat, but also acts as an EMI shield.
> Does it mean EMI is achieved as one end of heatsink is connected to Gnd.
> If the Heatsink is left floating. How can it act as EMI shield. Can anyone
> explain.
> Thanks
> Trilok Budathoki
> GE - India Business Center
> *: 91-40-27881731
> * : trilok.budathoki@xxxxxx
>
>
>
>
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