[SI-LIST] Re: controlled ESR capacitors or series resistors
- From: Tony Chiang <tony@xxxxxxxxxxxxxxxxxxx>
- To: "antokdavis@xxxxxxxxx" <antokdavis@xxxxxxxxx>, "si-list@xxxxxxxxxxxxx" <si-list@xxxxxxxxxxxxx>
- Date: Mon, 22 Dec 2014 19:44:53 +0000
Hi ALL,
Agilent tester is not reliable either because tester or socket or test
patterns, it may screen out good device. I really do not want to waste good
units due to false screen out, so let us keep original method,
1. screen all digital failures then rescreen Cready" on NCB as true
failure rejects to prevent false screen out good units. I do agree to
send out socket on tester and current NCB to clean and fine tune before 900 pcs
assemble units return to Bay
-- Tony
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of Anto Davis
Sent: Friday, December 19, 2014 8:52 PM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] controlled ESR capacitors or series resistors
Hi,
For optimum flat PDNs, the series resistor should be equal to square root
(L/C).
Out of the two options (1: controlled ESR caps 2: adding series resistors to
capacitors) which is more commonly chosen?
Is there any other option available ?
Thanks,
Anto
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