In this issue we bring you information on the BGA reballing
process, introduce you to a new BGA repair circuit frame as
well inform you of two opportunities to learn about the
issues electronics assemblers are facing in the conversion
to a lead- free soldering process. BEST instructors and
staff will be on-hand speaking at two Midwest-based events
where your knowledge base of the conversion process can be
greatly expanded while getting a chance to "network" with
your peers. We look forward to seeing you at either event
soon.
BEST and Re-Balling BGAs. As the
changeover to lead-free solder alloys moves forward
contract manufacturers and OEMs have begun receiving
BGAs with lead-free solder balls. It most cases the
conversion from the Sn63 to lead-free process has
not yet occurred, leaving the users with little
choice but to have the device reballed with tin-
lead solder balls. There are several controlled
methods by which BEST can reball an area array
device. These can be found on the extensive process
description listed below.
In line with its other circuit board repair
products, BEST has developed a BGA circuit frame
(P/N BEST5CktTrack) for the replacement of a variety
of BGA land patterns. This circuit frame allows you
to choose from a wide variety of pad sizes with
different orientation of traces into and out of the
pads. These circuit frames feature tin coating for
compatibility with both Sn63 and lead-free solders.
Call us today if you would like to have a custom
frame designed for your application.
Mark your calendars for Friday June 3rd as the local
SMTA chapter will be hosting a lead-free soldering
technology symposium. This symposium will feature a
variety of topics such as: "How to eliminate voids
in lead-free solder processing", "The latest in IPC
inspection criteria for lead free solder joints" and
"Lead-free solder reflow oven profiling". Ray
Cirimele from BEST will be speaking on lead-free
rework and BGA issues.
If you are in the midst of trying to figure out the
variety of RoHS compliance, reporting and tracking
issues then the SMTA-sponsored "Complying with RoHS"
symposium may be for you. It will focus on
experiences that companies are having in solving the
many difficult compliance challenges. The format for
this workshop is designed to be highly interactive.
This event will be held June 21st at Guidant
Corporation in St. Paul, MN. BEST will be presenting
information on "Converting to Pb-free
Manufacturing". Conversion issues such as the effect
of higher reflow temperatures, dealing with
increased MSD levels and wave solder bath conversion
strategies will be discussed. Attendees will learn
tactics for reducing their conversion times and
problems, while accelerating their overall
conversion efficiency.