Hi Paul, I was told by our purchasing guy that Rohm will phase out
     their 1206 and 0805 capacitors, they also said this is the trend for
     Japanese and Taiwanese vendor to go for smaller chips size.
     Thanks,
     Cheng


______________________________ Reply Separator _________________________________
Subject: RE: [TN] 0402
Author:  Paul Klasek <[log in to unmask]> at Internet
Date:    11/24/99 4:06 PM


Hmm , Cheng, could we elaborate on this one please ;
if this would indeed be so ; I have a problem here ;
with legions of fellows on same pastures .

Where did you get the drift of the "phasing out 0805's" ?

402's on bottom are relatively easy due to minimal shadowing, check :
http://www.ITM-SMT.COM ; I think Phil did some work on this subject .

To be frank standard pads (manufacturer's recommendation )should do,
if you'd not stack too close or shadow from big components , but you know
that.
If you do fine on 603's , you'll have no problem on 402's ;
apart from keeping the glue from spreading to pads :
you'll start to feel the pitch on stencil or needle .

Paul Klasek
http://www.resmed.com

-----Original Message-----
From: Wm Cheng [mailto:[log in to unmask]]
Sent: Wednesday, 24 November 1999 20:34
To: [log in to unmask]
Subject: [TN] 0402


     Hi Technetters,

     It seems the market is phasing out the 1206 and 0805 chips, we also use
     the 0603 for wave soldering and the result is OK, but is there anyone
     using the 0402 chips for wave soldering process? Any suggestion on the
     footprint and process setup to accommodate for that?

     Thanks and regards,
     Cheng

##############################################################
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
##############################################################