Subject: | |
From: | |
Reply To: | (Designers Council Forum) |
Date: | Thu, 21 Apr 2005 14:01:12 -0700 |
Content-Type: | text/plain |
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Dennis,
That seems to be a great choice based on the limited information supplied...
If more margin is needed for unknowns you could try the FR406 IPC-4101/26
which has a minimum Tg of 170 deg C
http://www.isola-usa.com/images/uploaded/FR406Bulletin-1.pdf
FR408 IPC-4101/24 has a minimum Tg of 150 deg C although ISOLA brand
material claims 180 deg C. But I am basing that off the IPC-4101 spec.
http://www.isola-usa.com/images/uploaded/FR408Bulletin2.pdf
I would specify the IPC-4101 spec because that is not vendor specific.
Bill Brooks - KG6VVP
PCB Design Engineer, C.I.D.+, C.I.I.
Tel: (760)597-1500 Ext 3772 Fax: (760)597-1510
_______________________________________
Member of the San Diego Chapter of the IPC Designers Council
Communications Officer, Web Manager
http://dcchapters.ipc.org/SanDiego/
http://pcbwizards.com
-----Original Message-----
From: Denis Lefebvre [mailto:[log in to unmask]]
Sent: Thursday, April 21, 2005 1:19 PM
To: [log in to unmask]
Subject: Re: [DC] High Temperature Environment
I think I'd be inclined to go with FR408 or any IPC4101/24 grade material.
-----Original Message-----
From: Don Larisey [mailto:[log in to unmask]]
Sent: Thursday, April 21, 2005 1:13 PM
To: [log in to unmask]
Subject: [DC] High Temperature Environment
We are looking at putting a small board with all components rated to
125C into a sustained working environment of 120C. Should we be
specifying a different board material other than FR4. This is a small
double sided board about 25mm X 40mm with components both sides.
Any comments???
Don
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