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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