We are currently having problems soldering SOT23 parts on
the bottom side of a board.  We glue the bottom side surface
mount components and then run through the reflow oven to
cure the glue.  We then run the boards through the wave
using both a chip and lambda wave.

All the SMT components solder except the SOT23.  The
SOT23 is randomly soldered.  Sometimes 2 leads,
sometimes 1 lead, sometimes all leads, sometimes no
leads.  The shadowing can be accounted for but not all the
missing solder is due to shadowing.

Has anyone experienced such problems.

Any help is greatly appreciated,
Karla Duggan
APACTS

##############################################################
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.
For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311
##############################################################