If the poster board is 0.5 mm thick as required, you may be failing equipment
that might otherwise pass, which I have seen happen. A spark through the
poster board will likely be worse than the one you supply from the ESD
simulator in terms of peak current and di/dt. In any case, unless the poster
board in 0.5mm thick and you have confirmed there is no spark through, than
you cannot say you have tested to IEC 61000-4-2! Maybe OK for a pretest but
not for CE marking. It's hardly worth it to save a few cents on test materials
(the insulating layer we are talking about, USB cables, Ethernet cables, and
many other things) and waste thousands of dollars in the end. I see this
happen a dozen times per year.
I also recommend using new, high quality cables for any performance test. This
is especially important for USB and Ethernet cables.
Doug
On 7/25/11 10:32 AM, Sundstrom, Michael wrote:
Guys,
I just use poster board, I get 20 sheets at a local office supple house
for
$5-$6 ?
Am I missing something? Do you need plastic sheets?
Michael Sundstrom
OHD / TREQ Dallas
Electronic Lab Analyst, EMC Lead
2170 French Settlement Rd, Suite B
Dallas, Texas 75212
(214) 579 6312
(940) 390 3644c
KB5UKT
Albert Einstein once said, "The definition of insanity is doing the same
thing over and over again and expecting different results".
From: Bryce Stammerjohan [mailto:[email protected]]
Sent: Monday, July 25, 2011 12:26 PM
To: [email protected]
Subject: Re: [PSES] ESD Spacer
Derek,
You might pay more to ship it from the west coast than what it costs
for the
material, but Tap Plastics has a polycarbonate in 20 mils thickness that
we’ve found works well and is off the shelf in 2x4 foot size. See
http://www.tapplastics.com/shop/product.php?pid=541&;
I imagine that suppliers in IL may have something similar.
Best Luck,
Bryce Stammerjohan
________________________________
From: Derek Walton [mailto:[email protected]]
Sent: Friday, July 22, 2011 1:56 PM
To: [email protected]
Subject: [PSES] ESD Spacer
Hi All,
looking into replacing my insulating spacing mat for EN61000-4-2. Does
anyone
have suggestions for a source, preferably here in the USA?
Thanks,
Derek Walton
L F Research
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