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MY OBSERVATION
The Rework Solution
My name is Marvin Cohen. I am the inventor and president of Chip
Quik, Inc. In 1994 a US Patent and a Registered US Trade Mark was
issued for Chip Quik, entitled A Method For Removing Electrical
Components >From Printed Circuit Boards. Throughout my career in
electronics I have been fortunate enough to accumulate a wealth of
information on circuit boards and Surface Mount Technology (SMT).
Chip Quik has had a major impact in the rework industry. I am
pleased to share this information with all in the industry.
In
future newsletters I will elaborate in detail on various methods
of performing affordable quality solder, desolder, rework.
PLEASE PASS THIS INFORMATION ON TO ALL OF YOUR TECHNICAL
ASSOCIATES
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THE REWORK CHALLENGE
My years of electronics experience in prototype, repair, and
the rework industry have put me in contact with numerous
technical people who perform all levels of circuit board
rework. While performing live rework demonstrations at trade
shows, service companies, technical organizations, and
universities, I have had the opportunity to network with a
large cross section of people in the industry.
MY observation is that there is a significant lack of
understanding in the basic methods of SMT rework. The result
is a misconception that you need to spend thousands of dollars
on expensive equipment along with specialized training. Most
of us cannot justify this expense for low volume rework.
Consequently many boards that could easily be reworked end up
being scrapped. |
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EXCESSIVE REWORK HEAT CAUSES DAMAGE
 The
greatest challenge in rework is to safely remove an SMD
without inflicting damage to the board or adjacent components.
The high temperatures required by the traditional removal
methods of convection or conduction increase the potential of
inflicted damage.Temperatures of 600deg to 800deg applied to
the rework area for any appreciable time can cause lifted
pads, burning of board, reflowing adjacent components, and
damage to double sided boards. Also mechanical damage from
chip extraction when reflow is incomplete.
Because of the fear of inflicting damage most engineers and
technicians have avoided doing rework. Now with Chip Quik,
those that would not even consider performing solder and
desolder on SMD's are doing quality rework themselves. CHIP
QUIK has indeed revolutionized the rework industry.
The Chip Quik word is spreading fast. This unique method has
already become known globally as THE CHIP QUIK REWORK SOLUTION |
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THE CHIP QUIK SMD REMOVAL KIT
 Included
in each Chip Quik Kit is a special low temperature removal
alloy that has excellent wetting ability and melts at the low
temperature of 136deg.F (58deg.C), a special paste flux in a
syringe used for solder and desolder,alcohol pads for clean
up,and complete instructions. The kit will remove 8-10 SMD's
depending on the amount of pins.
Chip Quik can also be purchased in bulk form and is available
from may distributors. |
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CHIP QUIK REMOVES SMD's SAFELY & EASILY
 CHIP
QUIK is a special formulated removal alloy that looks like
solder but is not. The alloy has a low melting temperature of
136deg.F (58deg.C) and has excellent wetting ability. When
Chip Quik alloy is melted into the existing attachment solder
of an SMD with a regular solder iron, the two alloys fuse
together and form a new alloy with a low melting temperature
below 200deg.F. Remaining is a new low temperature alloy with
more thermal mass that stays molten long enough to easily
remove the SMD. The solder iron temperature is not critical,
but 500deg.F or lower is recommended. At this low temperature
all potential damage has been eliminated |
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THE NEXT CHIP QUIK NEWSLETTER WILL EXPLAIN IN DETAIL HOW TO
REMOVE THE SMD, CLEAN PADS, & RESOLDER THE NEW SMD.
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