All;
Sounds like N4000-6 and N4000-13 are not suitable for a LF assembly
processes. Is that what I am hearing?
According to Nelco’s web site, the N4000-13* materials are LF assembly
compatible.
Their Tg is 210C. The N4000-6 is not LF compatible and has a Tg of 175C.
There’s more of course to it than just the Tg.
I have seen delamination problems with N4000-6 as well as N4000-13.
According to Nelco, the N4000-12* materials are LF assembly compatible as
well. The Tg for this material is 190C.
Has anyone tested N4000-12 with a LF process and then temperature cycled it?
Donald
At 04:32 PM 2/28/2006, you wrote:
>John,
>
>Do you have fact about it?
>
>I'm asking because I'm working on a design which has 3.125 GHz signals on
>it and I'm looking for Nelco 4000-13.
>
>If I can avoid problem of delamination during the lead free assembly
>process and get rid of another simulation pass and rework because of
>change in material, it will be appreciated.
>
>
>Louis Guérin, C.I.D.+
>
>Conception de Plaquette de Circuit Imprimé| PCB Designer
>
>Lyrtech RD inc.
>( Téléphone - International/Phone - Worldwide: 1 (418) 877-4644 # 242
>( Sans frais - Canada et É.-U./Toll-free - Canada and USA: 1 (888)
>922-4644 # 242
>1 Téléc./Fax: 1 (418) 877-7710
>
> Infinite possibilities...TM
>
>
>-----Message d'origine-----
>De : TechNet [mailto:[log in to unmask]] De la part de John Burke
>Envoyé : 28 février 2006 14:01
>À : [log in to unmask]
>Objet : Re: [TN] High-frequency losses (e.g., SATA)
>
>Agreed,
>
>One thing though, if you are using lead free soldering temperatures
>Nelco - 12 works fine, Nelco - 13 does not work at all.
>
>John
>
>John Burke
>Senior Manager - Operations , Optichron
>[log in to unmask]
>W: 510 249 5233
>M: 408 515 4992
>http://www.optichron.com
>Profile: https://www.linkedin.com/e/fps/2665502/
>
>-----Original Message-----
>From: TechNet [mailto:[log in to unmask]] On Behalf Of Dwight Mattix
>Sent: Tuesday, February 28, 2006 10:09 AM
>To: [log in to unmask]
>Subject: Re: [TN] High-frequency losses (e.g., SATA)
>
>Have a look at FR408. It's more like N4000-12 electrically. However,
>both
>FR408 and -12 have been close enough to -13 electrical performance to
>drop
>in as replacements in our sub-2GHz applications. Both FR408 and -12
>have
>similar innerlaminar bond strength as N4000-6. That is nearly double
>the
>inner laminar bond strength of -13. Equally important in multi-lam
>single
>ply uVia build up constructions has been -12 and FR408's (apparently)
>lower
>delam sensitivity to retained moisture. -13 is not very hydroscopic but
>it
>will separate from it's glass sooner than 408, -6 or -12 if there is
>retained moisture.
>
>We've used a ton of -13 over the years and still use it in selected
>applications for it's higher Tg and marginally lower loss but if it's
>single ply and sequential lam FR408 or -12 are the way to go.
>
>my $.02,
>dw
>
>At 10:21 PM 2/27/2006, Ofer Cohen wrote:
> >In similar occasion of similar frequency (3.125GB/s) we've declined
> >IS410 and other, and approved IS620 and Nelco 4000-13. We are checking
> >no Nelco 4000-12 which is supposed to be electrically equivalent to the
> >-13 but chipper and LF compliant.
> >
> >Regards
> >Ofer Cohen
> >Manager - Quality Assurance and Reliability
> >SIEMENS COM FN A SB
> >
> >-----Original Message-----
> >From: TechNet [mailto:[log in to unmask]] On Behalf Of Michael Dunn
> >Sent: Monday, February 27, 2006 22:40
> >To: [log in to unmask]
> >Subject: [TN] High-frequency losses (e.g., SATA)
> >
> >Hello from a new member.
> >
> >We're wanting to run 1.5Gbps (differential) SATA signals over a
> >backplane, and naturally have SI concerns. The distance will be up to
> >15". We're considering IS410 and IS620 (620 has about 2.5x less loss).
> >
> >I've tried using calculators from Rogers and Isola, but for some
>reason,
> >they only report losses in single-ended lines.
> >
> >Can anyone share experiences, or suggest other tools that may be of
>use?
> >
> >
> >Thanks!!!
> >
> >
> >
> >Michael Dunn
> >Sr. Hardware Engineer
> >Kaleidescape Canada Inc.
> >611 Kumpf Drive, Unit 100
> >Waterloo, ON N2V 1K8
> >Canada
> >Ph: 519-772-6427
> >Fx: 519-772-6401
> >
> >---------------------------------------------------
> >Technet Mail List provided as a service by IPC using LISTSERV 1.8e To
> >unsubscribe, send a message to [log in to unmask] with following text in
> >the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt
>or
> >(re-start) delivery of Technet send e-mail to [log in to unmask]: SET
> >Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the
> >posts: send e-mail to [log in to unmask]: SET Technet Digest Search the
> >archives of previous posts at: http://listserv.ipc.org/archives Please
> >visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for
> >additional information, or contact Keach Sasamori at [log in to unmask] or
> >847-615-7100 ext.2815
> >-----------------------------------------------------
> >
> >---------------------------------------------------
> >Technet Mail List provided as a service by IPC using LISTSERV 1.8e
> >To unsubscribe, send a message to [log in to unmask] with following text
>in
> >the BODY (NOT the subject field): SIGNOFF Technet
> >To temporarily halt or (re-start) delivery of Technet send e-mail to
> >[log in to unmask]: SET Technet NOMAIL or (MAIL)
> >To receive ONE mailing per day of all the posts: send e-mail to
> >[log in to unmask]: SET Technet Digest
> >Search the archives of previous posts at:
>http://listserv.ipc.org/archives
> >Please visit IPC web site
>http://www.ipc.org/contentpage.asp?Pageid=4.3.16
> >for additional information, or contact Keach Sasamori at [log in to unmask]
>or
> >847-615-7100 ext.2815
> >-----------------------------------------------------
>
>---------------------------------------------------
>Technet Mail List provided as a service by IPC using LISTSERV 1.8e
>To unsubscribe, send a message to [log in to unmask] with following text
>in
>the BODY (NOT the subject field): SIGNOFF Technet
>To temporarily halt or (re-start) delivery of Technet send e-mail to
>[log in to unmask]: SET Technet NOMAIL or (MAIL)
>To receive ONE mailing per day of all the posts: send e-mail to
>[log in to unmask]: SET Technet Digest
>Search the archives of previous posts at:
>http://listserv.ipc.org/archives
>Please visit IPC web site
>http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional
>information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100
>ext.2815
>-----------------------------------------------------
>
>---------------------------------------------------
>Technet Mail List provided as a service by IPC using LISTSERV 1.8e
>To unsubscribe, send a message to [log in to unmask] with following text in
>the BODY (NOT the subject field): SIGNOFF Technet
>To temporarily halt or (re-start) delivery of Technet send e-mail to
>[log in to unmask]: SET Technet NOMAIL or (MAIL)
>To receive ONE mailing per day of all the posts: send e-mail to
>[log in to unmask]: SET Technet Digest
>Search the archives of previous posts at: http://listserv.ipc.org/archives
>Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16
>for additional information, or contact Keach Sasamori at [log in to unmask] or
>847-615-7100 ext.2815
>-----------------------------------------------------
>
>---------------------------------------------------
>Technet Mail List provided as a service by IPC using LISTSERV 1.8e
>To unsubscribe, send a message to [log in to unmask] with following text in
>the BODY (NOT the subject field): SIGNOFF Technet
>To temporarily halt or (re-start) delivery of Technet send e-mail to
>[log in to unmask]: SET Technet NOMAIL or (MAIL)
>To receive ONE mailing per day of all the posts: send e-mail to
>[log in to unmask]: SET Technet Digest
>Search the archives of previous posts at: http://listserv.ipc.org/archives
>Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16
>for additional information, or contact Keach Sasamori at [log in to unmask] or
>847-615-7100 ext.2815
>-----------------------------------------------------
Donald Kyle C.I.D.+
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------
|
