[SI-LIST] Re: What happen to FR4 if exposed under strong E field or H field?
- From: "Brent DeWitt" <bdewitt@xxxxxxxxxxxxx>
- To: <John@xxxxxxxxxxxx>, <si-list@xxxxxxxxxxxxx>
- Date: Sun, 13 Jun 2004 22:15:42 -0600
John,
After my previous mail to you, I got rather curious and found the following
Dupont paper on FR4 moisture characteristics:
http://www.dupont.com/thermount/pdf/comparison.pdf
Brent
> -----Original Message-----
> From: si-list-bounce@xxxxxxxxxxxxx
> [mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of John Lin (ªL´Â·×)
> Sent: Sunday, June 13, 2004 8:03 PM
> To: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] What happen to FR4 if exposed under strong E field or
> H field?
>
>
> Dear all,
> Do somebody understand what big E-Field will affect FR4 for PCB
> if it is over the FR4 breakdown voltage?
> Also, What will a strong Magnetic field impact a FR4 PCB. The
> big H-Field, magnetic field is caused by big current but low
> voltage on the power planes sandwiching FR4? Here, my point is
> the influence to the FR4 material itself , not crosstalk among signals.
>
> Thanks,
> John
>
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