..................passing Steve a venti starbucks maxicaff........
Happy Friday steve..........the mocha for "other Steve" is coming right
up................
John..............................8-)
------------------------------------
Avanex
John Burke
Senior Manager RoHS Compliance
[log in to unmask]
40919 Encyclopedia Circle
Fremont
CA 94538
tel: 510 897 4250
fax: 510 979 0189
mobile: 510 676 6312
------------------------------------
-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Steve Gregory
Sent: Friday, September 16, 2005 4:28 AM
To: [log in to unmask]
Subject: Re: [TN] Rework for Delaminated PWBs
I haven't woke-up yet, strike that last question.
You said you already recieved the boards...
so you would know if you got new ones or not.
Kind regards,
-Steve Gregory-
Senior Process Engineer
LaBarge Incorporated
Tulsa, Oklahoma
(918) 459-2285
(918) 459-2350 FAX
Stephen R
Gregory/LABARGE@L To:
[log in to unmask]@SMTP@Exchange
ABARGE cc: (bcc: Stephen R
Gregory/LABARGE)
Sent by: TechNet Subject: Re: [TN] Rework for
Delaminated PWBs
<[log in to unmask]>
09/16/2005 06:16
AM
Please respond to
TechNet E-Mail
Forum
<[log in to unmask]>
; Please respond
to Stephen R
Gregory
Mornin' Everybody!
I have the pictures that Mumtaz sent me
posted now. Go to:
http://www.stevezeva.homestead.com and
click on "Picture Page 2"
and look at; "Blister 1, Blister 2, After
Bake 1, and After Bake 2".
Boy, that's some SERIOUS delamination! I
don't know enough to say
if the rework that your supplier is
proposing is acceptable, but my first
question would be is why would they send
you boards that are not cured?
If they sent you boards that are that
undercured, what else is wrong with
these boards?
I would have a very hard time accepting
these boards. Which brings up
another question, if you say you won't
accept them and that you want new
boards, how will you know that you won't
get the same boards that your
supplier has "reworked"?
Kind regards,
-Steve Gregory-
Senior Process Engineer
LaBarge Incorporated
Tulsa, Oklahoma
(918) 459-2285
(918) 459-2350 FAX
Mumtaz Bora <[log in to unmask]>
Sent by: TechNet <[log in to unmask]>
09/15/2005 08:20 PM
Please respond to TechNet E-Mail Forum
<[log in to unmask]>; Please respond to Mumtaz Bora
<[log in to unmask]>
To: [log in to unmask]@SMTP@Exchange
cc: (bcc: Stephen R Gregory/LABARGE)
Subject: [TN] Rework for Delaminated PWBs
Dear Technetters,
We have received a large batch of PWBs that
is showing delamination after
reflow at peak temp. 230C. Laminate is high
Tg - 170C.
Supplier is proposing to perform the
following rework -- on these boards
instead of providing replacement parts.
Oven bake at 190C for 2.5 hours followed
by second bake at 150C for 2
hours at 6kg/cm2 pressure. Will this
guarantee a full cure?
I am concerned about latent failures and
layers opening up as full cure was
not achieved the first time.
Any inputs from the forum will be
appreciated.
I will request Steven Gregory to place the
image of delamination on his
website. Have a great weekend.
Thank-you
Mumtaz
D/ 252 - SMT Process and Component
Quality
Bldg. V238E
Voice (858)-882-1967
Fax (858)-882-3126
Page (858)-635-1180
Cell: (858) -449-7054
email: [log in to unmask]
Kyocera-Wireless Corp.
10300, Campus Point Drive
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