Hi Michael,
Nowhere did I say that IS 410 is equal to PC370HR; all I said that both of these Pb-free capable materials are now materials sold by Isola, since Isola gobbled up Polyclad.
However, int terms of the properties important for Pb-free capability they are not that far apart.
IS 410 [Tg=170C, Td=350C, TE=3.5%, STII=225 ]
PC 370HR [Tg=170C, Td=340C, TE=2.8%, STII=227 ]
Werner
-----Original Message-----
From: Jeremias, Michael <[log in to unmask]>
To: [log in to unmask]
Sent: Tue, Jul 6, 2010 6:14 am
Subject: [TN] AW: [TN] MIL-S-13949/EPS0606/IPC-1710 etc
Hello Partners, hi Werner
Pay attention!
IS 410 is not equal PC 370 HR.
IS 410 is not filled while PC 370 HR is a filled material with quite
different properties mainly in withstanding lead free soldering
temperatures, if You use it with thick multilayers and through hole
vias.
Sincerly
Michael Jeremias
Industrial Engineering (OPPI41)
Electronics Production
((( Defence Electronics
EADS Deutschland GmbH
89077 Ulm
From: Werner Engelmaier [mailto:[log in to unmask]]
Sent: Friday, July 02, 2010 10:07 AM
To: [log in to unmask]; [log in to unmask]
Subject: Re: [TN] MIL-S-13949/EPS0606/IPC-1710 etc
Hi Ken,
You sure have quite a mish-mush.
There is no such thing as IPC-SM-750.
IS410 is an Isola lead-free capable base material as is 370 HR
[originally from Polyclad]
Tg and Td are material properties important for being lead-free capable/
IPC 4101 is an IPC document in its C revision, /129, /24 and /26 are
base material categories.
IPC-A-600 is an assembly spec.
If your drawing has nothing but it on it, your PCB is inadequately
specified.
In order to understand all of this and how it hangs together, you may
want to get my White Paper [see my website].
Regards,
Werner Engelmaier
Engelmaier Associates, L.C.
Electronic Packaging, Interconnection and Reliability Consulting
7 Jasmine Run
Ormond Beach, FL 32174 USA
Phone: 386-437-8747, Cell: 386-316-5904
E-mail: [log in to unmask], Website: www.engelmaier.com
-----Original Message-----
From: Ken Barton <[log in to unmask]>
To: [log in to unmask]
Sent: Fri, Jul 2, 2010 12:31 pm
Subject: [TN] MIL-S-13949/EPS0606/IPC-1710 etc
Good day helpful gurus,
I am the lone PCB layout person working at a new company with
outdated/obsolete (MIL0S-13949 for example) fab drawing notes. Our PCB
fab
vendor's cert of compliance states that out boards are built per:
SM-750/IS410/370HR Tg180 C Td 350 (IPC 4101/129, IPC 4101/24.26, IPC
4552
for immersion gold.
The only IPC reference/spec on our drawings is A-600.
Please recommend which IPC standards to purchase that refer to/specify
standards for class III aerospace type PCBs, and if anyone can fill me
in on
EPS0606, I'm not getting very far with the web search.
Thanks,
Ken Barton
Luma Technologies
(425) 643-4000 x304
[log in to unmask]
Visit us at www.lumatech.com
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