Apparently SI-List doesn’t like my android devices. I suggested you might try
protoexpress.com. I'm not sure they have the control you need, but they might.
Regards,
Steve
-----Original Message-----
From: FreeLists Mailing List Manager [mailto:ecartis@xxxxxxxxxxxxx] ;
Sent: Wednesday, February 3, 2016 11:08 PM
To: si-list digest users <ecartis@xxxxxxxxxxxxx>
Subject: si-list Digest V16 #40
si-list Digest Wed, 03 Feb 2016 Volume: 16 Issue: 040
In This Issue:
#1: From: "Havermann, Gert" <Gert.Havermann@xxxxxxxxxxx>
Subject: [SI-LIST] AW: Recommendations for PCB fabs - tight
tolerance
#2: From: Aubrey Sparkman <asparky@xxxxxxxxxxxxxxxxxxxxxxxx>
Subject: [SI-LIST] DuPont™ Pyralux® AP VS DuPont™
Interraâ„¢ HK
#3: From: "Bartlett, Josiah" <josiah.bartlett@xxxxxxxxxxxxx>
Subject: [SI-LIST] Re: DuPont™ Pyralux® AP VS DuPont™ Interra™
HK 04J
#4: From: Aubrey Sparkman <asparky@xxxxxxxxxxxxxxxxxxxxxxxx>
Subject: [SI-LIST] Re: DuPont™ Pyralux® AP VS DuPont™
Interraâ„¢
----------------------------------------------------------------------
Msg: #1 in digest
From: "Havermann, Gert" <Gert.Havermann@xxxxxxxxxxx>
Subject: [SI-LIST] AW: Recommendations for PCB fabs - tight tolerance
Date: Wed, 3 Feb 2016 07:54:42 +0000
If the Soldermask positional tolerances are the only critical part, you should
look for suppliers using LDI (Laser Direct Imaging) instead of Photoplot films,
and use an optical alignment instead of a mechanical alignment.
BR
Gert
----------------------------------------
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Aufsichtsrats: Dipl.-Kfm. Jörg Selchow; persönlich haftende Gesellschafter:
Dipl.-Kfm. Dr.-Ing. E.h. Dietmar Harting, Philip F.W. Harting, Maresa
Harting-Hertz; HARTING WiMa AG (Luxemburg) & Co. KG, HARTING Beteiligungs GmbH
& Co. KG; Generalbevollmächtigte Gesellschafterin: Dipl.-Hdl. Margrit Harting
-----Ursprüngliche Nachricht-----
Von: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] Im ;
Auftrag von Jakubiec, Chris
Gesendet: Dienstag, 2. Februar 2016 19:07
An: si-list@xxxxxxxxxxxxx
Betreff: [SI-LIST] Recommendations for PCB fabs - tight tolerance
We are designing small PCB's to use as test fixtures for fine pitch wafer level
chip-scale parts (WLCSP). Our current PCB fab seems to be having issues with
tolerance control of the pads and solder mask. Looking for recommendations of
PCB fabs that have very tight process control.
Thanks,
Chris
Efficient Power Conversion
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------------------------------
Msg: #2 in digest
From: Aubrey Sparkman <asparky@xxxxxxxxxxxxxxxxxxxxxxxx>
Date: Wed, 3 Feb 2016 10:22:11 -0600
Subject: [SI-LIST] DuPont™ Pyralux® AP VS DuPont™ Interra™ HK 04J
I've seen presentations on HK04J for power / ground pairs an even used it
myself. Since some PCB suppliers we would want to use for quick turn stock
Pyralux AP but not the HK04J, I was asked about a substitution. When I
compared data sheets, I didn't see a significant difference.
Can anyone comment?
Thanks,
Aubrey Sparkman
SparkRight Solutions
Sent from my iPhone
------------------------------
Msg: #3 in digest
From: "Bartlett, Josiah" <josiah.bartlett@xxxxxxxxxxxxx>
Subject: [SI-LIST] Re: DuPont™ Pyralux® AP VS DuPont™ Interra™ HK 04J
Date: Wed, 3 Feb 2016 21:03:12 +0000
I don't have any experience with HK04J, but I've found that with Pyralux AP the
bond or coverlay material has a lot more influence on the effective loss
tangent than the Pyralux, so consider the whole stackup.
Regards,
Josiah Bartlett
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On ;
Behalf Of Aubrey Sparkman
Sent: Wednesday, February 03, 2016 8:22 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] DuPont™ Pyralux® AP VS DuPont™ Interra™ HK 04J
I've seen presentations on HK04J for power / ground pairs an even used it
myself. Since some PCB suppliers we would want to use for quick turn stock
Pyralux AP but not the HK04J, I was asked about a substitution. When I
compared data sheets, I didn't see a significant difference.
Can anyone comment?
Thanks,
Aubrey Sparkman
SparkRight Solutions
Sent from my
iPhone------------------------------------------------------------------
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------------------------------
Msg: #4 in digest
Subject: [SI-LIST] Re: DuPont™ Pyralux® AP VS DuPont™ Interra™ HK 04J
From: Aubrey Sparkman <asparky@xxxxxxxxxxxxxxxxxxxxxxxx>
Date: Wed, 3 Feb 2016 19:27:01 -0600
There are several Pyralux materials. My question is specific to AP which has a
very low loss tangent. There are also FR and LF versions which, due to
adhesive, have high loss tangent.
Sent from my iPhone
On Feb 3, 2016, at 3:03 PM, Bartlett, Josiah <josiah.bartlett@xxxxxxxxxxxxx>
wrote:
I don't have any experience with HK04J, but I've found that with Pyralux AP
the bond or coverlay material has a lot more influence on the effective loss
tangent than the Pyralux, so consider the whole stackup.
Regards,
Josiah Bartlett
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On ;
Behalf Of Aubrey Sparkman
Sent: Wednesday, February 03, 2016 8:22 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] DuPont™ Pyralux® AP VS DuPont™ Interra™ HK 04J
I've seen presentations on HK04J for power / ground pairs an even used it
myself. Since some PCB suppliers we would want to use for quick turn stock
Pyralux AP but not the HK04J, I was asked about a substitution. When I
compared data sheets, I didn't see a significant difference.
Can anyone comment?
Thanks,
Aubrey Sparkman
SparkRight Solutions
Sent from my
iPhone------------------------------------------------------------------
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List forum is accessible at:
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