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Yes. Doug said it better than I.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Douglas Pauls
Sent: Thursday, October 27, 2011 4:12 PM
To: [log in to unmask]
Subject: Re: [TN] ESD packaging material issue
In addition Wayne, if the boards are being put into the bags directly
after a heat-based cure (e.g. oven) and you do not allow them to cool to
room temperature first, the coating will stick to the bags. Check to see
when your operators are putting the assemblies into the bags and make sure
they are not shortcutting the cure process.
Doug Pauls
Phil Bavaro <[log in to unmask]>
Sent by: TechNet <[log in to unmask]>
10/27/2011 03:58 PM
Please respond to
TechNet E-Mail Forum <[log in to unmask]>; Please respond to
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Subject
Re: [TN] ESD packaging material issue
Wayne,
Something doesn't sound right here. Solithane S-113 is a polyurethane and
my experience is that fully cured urethane does not normally stick to the
static dissipative interior of a multilayer ESD shielding bag.
I would check to ensure that the conformal coating is fully cured before
it gets put into the bag.
I'll admit I haven't ever used Solithane S-113 and had a hard time finding
the data sheet. Uniroyal was the manufacturer on the only archived
datasheet I could find but the current website eluded me.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of E-Mail Forum Wayne
Knapp
Sent: Thursday, October 27, 2011 1:13 PM
To: [log in to unmask]
Subject: [TN] ESD packaging material issue
Hi Technetters,
I could use your help resolving an issue I?m having with the ESD bags that
we are currently using for packaging. The ESD bags are sticking to the
conformal coating (Solithane S-113) on the CCAs that are placed in the
bag. We cannot change the coating that is used on the CCAs, so we are
looking for ESD safe packaging bags that will not stick to the CCAs. Does
anyone know if there is an ESD bag (material) that would not stick to the
CCAs? Any help identifying a suitable ESD bag material and supplier would
be appreciated.
Thanks,
Wayne
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