That's kind of the same situation that I have here. If you're
familiar with a Altera Stratix BGA, they do have a heat sink,
or spreader in the top. It's a flip-chip BGA that's on a BT
substrate, with copper in the top...
If I can't find something close, I have an old Texas Instruments
BGA with a heat sink in the top that's about the same size that
I might use...at least it will get me close to the thermal mass.
Don't ya' just love to "wing-it" once in a while?
(that $3,700 price tag still gives me the creeps tho'...)
Kind regards,
-Steve Gregory-
Senior Process Engineer
LaBarge Incorporated
Tulsa, Oklahoma
(918) 459-2285
(918) 459-2350 FAX
|---------+---------------------------->
| | Guy Ramsey |
| | <gramsey@RDCIRCUI|
| | TS.COM> |
| | Sent by: TechNet |
| | <[log in to unmask]>|
| | |
| | |
| | 07/20/2005 03:17 |
| | PM |
| | Please respond to|
| | gramsey |
| | |
|---------+---------------------------->
>--------------------------------------------------------------------------------------------------------------|
| |
| To: [log in to unmask]@SMTP@Exchange |
| cc: (bcc: Stephen R Gregory/LABARGE) |
| Subject: Re: [TN] Dummy 1020-ball, 1mm pictch BGA's... |
>--------------------------------------------------------------------------------------------------------------|
Well, its close, usually very close. We have done the same thing here. But
there can be quite a difference between a part with die and heat spreader
and a piece of fiberglass. I had an experience where the functional part
ran
20?C lower than my dummy part.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Douglas O. Pauls
Sent: Wednesday, July 20, 2005 3:13 PM
To: [log in to unmask]
Subject: Re: [TN] Dummy 1020-ball, 1mm pictch BGA's...
Richard,
This is brilliant. It solves a problem that has been a pain in the butt
for a while (shut up Hillman/Whittaker). How to get a non-daisy chained
BGA? make your own. Brilliant. I feel like the Guiness commercial.
Doug Pauls
"Stadem, Richard"
<Richard.Stadem@G
D-AIS.COM> To
Sent by: TechNet [log in to unmask]
<[log in to unmask]> cc
Subject
07/20/2005 02:05 Re: [TN] Dummy 1020-ball, 1mm
PM pictch BGA's...
Please respond to
TechNet E-Mail
Forum
<[log in to unmask]>
; Please respond
to
"Stadem, Richard"
<Richard.Stadem@G
D-AIS.COM>
I had the same problem with a 1064 ball uBGA, no samples to set up the
profile. So I purchased the reballing pre-forms from Winslow
Automation/6-sigma and epoxied the flat side to a peice of .062" FR-4. I
then had something reasonably close to the real thing.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Stephen Gregory
Sent: Wednesday, July 20, 2005 1:54 PM
To: [log in to unmask]
Subject: [TN] Dummy 1020-ball, 1mm pictch BGA's...
Afternoon All!
I'm trying to find some dummy 1020-ball, 1mm pitch BGA's to help me
set-up my reflow profiles with. I don't want to use the actual parts to
tweek my profile, because these puppies are $3,700 each! (I get shivers
up and down my spine just thinking about how much these cost...)
I've contacted Altera (the manufacturer of the part), to see if I can
obtain mechanical samples....as you may have guessed, I'm still waiting
for an answer.
I've checked with Practical Components, Topline, STI, and Best, none of
them carry an 1020-ball BGA...
I'm asking if anyone knows of somewhere else I can check...
Kind regards,
-Steve Gregory-
Senior Process Engineer
LaBarge Incorporated
Tulsa, Oklahoma
(918) 459-2285
(918) 459-2350 FAX
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