Carey,
CCGA is a Ceramic Column Grid Array and its big. The ones we have
played with were very heavy(around 40 grams), with long thick "90/10
wires" instead of eutectic balls. The columns are easily bent and
coplanarity is a problem. We used a lot of paste to compensate(0.008"
thick). Although we have shown that we can assemble these monsters, I
hope we never need to.
Earl,
What's going on with you micro stencil process? We managed to get a
decent print for both the CCGA and microBGA with the micro stencil. I
shouldn't include me in that "we" because I always smear the paste on
release, but some of our rework operators are pretty incredible.
Thanks
Ryan Grant
Process Development Engineer
MCMS
(208) 898-1145
FAX (208) 898-2789
[log in to unmask]
>-----Original Message-----
>From: Carey Pico [SMTP:[log in to unmask]]
>Sent: Wednesday, October 20, 1999 11:26 PM
>To: [log in to unmask]
>Subject: Re: [TN] Advanced Automatic/Vision Solder Paste Dispenser
>
>Senor Luna
>What's "CCGA" in non-acronym form? (I'm guessing it's the compact form of
>BGA's)
>
>Try tracking down ORMET (used to be the name of the company, but now it is
>Ta... I can't remember, but it is japanese sounding). They make a
>metal-organic paste used for fine line metallization. I've seen it used for
>PWB's and, I think, flat panel displays. While I don't recommend the
>material for it, they probably had to deal with dispensing. Also, there is
>a company in Plano, TX (?Microjet???) that developed a solder ball writing
>(like inkjet printing). Sorry my memory for names is so poor.
>
>Please copy me on any info/sales pitches as well.
>
>Carey
>
>
>-----Original Message-----
>From: Earl Moon <[log in to unmask]>
>To: [log in to unmask] <[log in to unmask]>
>Date: Wednesday, October 20, 1999 8:21 PM
>Subject: [TN] Advanced Automatic/Vision Solder Paste Dispenser
>
>
>>Kind People,
>>
>>Moving to the next generation CCGA, as previously mentioned. Will need to
>>repair such devices down to .8mm centers. Cannot manually screen print
>>with micro stencils.
>>
>>Are there any new or advancing type automatic solder paste dispensers
>>available or on the horizon. I gladly accept all sales pitches, ideas,
>>or otherwise sage advice or information.
>>
>>Earl Moon
>>
>>
>>##############################################################
>>TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
>>##############################################################
>>To subscribe/unsubscribe, send a message to [log in to unmask] with following
>text in
>>the body:
>>To subscribe: SUBSCRIBE TECHNET <your full name>
>>To unsubscribe: SIGNOFF TECHNET
>>##############################################################
>>Please visit IPC web site (http://www.ipc.org/html/forum.htm) for
>additional
>>information.
>>If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or
>>847-509-9700 ext.5365
>>##############################################################
>>
>
>##############################################################
>TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
>##############################################################
>To subscribe/unsubscribe, send a message to [log in to unmask] with following
>text in
>the body:
>To subscribe: SUBSCRIBE TECHNET <your full name>
>To unsubscribe: SIGNOFF TECHNET
>##############################################################
>Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
>information.
>If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or
>847-509-9700 ext.5365
>##############################################################
##############################################################
TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in
the body:
To subscribe: SUBSCRIBE TECHNET <your full name>
To unsubscribe: SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information.
If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or
847-509-9700 ext.5365
##############################################################
|
