Conventional pattern plating in an acid
bath is a difficult process to control. The surface to be plated
must be computed accurately, and limitations are placed on applications
that require durablity or operate at extreme temperatures. Also,
brighteners and additives can cause unseen failures like cracking, due
to Z axis expansion or separation of the plated copper from the base
copper or hole wall. Further, the waste products with additives
from acid baths are difficult to dispose of.
Eddy Electronics avoids all of these
problems by implementing a pyrophosphate copper plating bath as opposed
to the acid bath. Pyrophosphate plating produces copper of
exceptional ductility and elongation strength (i.e. elastic, will not
crack). In a pyrophosphate bath, panel plating is used as opposed
to pattern plating, which avoids the need for any calculations.
Pyrophosphates are far less damaging to the environment, as they are
easily recycled and replenished, rather than routinely
flushed.
Efficient Copper Etching
Compared with conventional methods, our
high efficiency etching consumes less energy and chemicals per ounce of
copper, is less toxic and is completely recycleable.
High Performance Surface
Finishes
The electronics packaging industry is
keenly pursuing new alternatives to tin/lead plating and solder.
As a conventionally made panel cools after reflowing, warpage can occur
if there is a difference in conductor density between sides. A
ground plane on one side of a board can cause a bend as the solder
freezes. Large areas of solder can cause areas of soldermask to
chip off and allow potential shorts during wave soldering.
Eddy Electronics' silver immersion process
offers high quality alternatives to tin-lead. Our silver coating
outperforms nearly all other lead free alternatives: tin, organic
coatings, palladium, nickel gold, nickel tin, and bare
copper.
Environmentally Safe
Materials
Tin-Lead plating is no longer the only
option for surface finishing. Environmentally, this old standard
has been our industry's greatest liability. A conventional circuit
shop produces hazardous toxic waste from plating, rinse, reflow and etch
which all contain lead. The boards become hazardous waste even as
they come to the end of their service life. This waste takes the
form of gaseous exhaust, liquid effluent and solid waste and can be very
complicated to treat. Unfortunately, in many countries this waste
is simply discarded.
Our silver has none of these environmental
hazards.
Recyclable Waste
Products
Our claim is probably unique: all of our
metallic waste is recyclable. In our processes, waste exists only
in recyclable form. Our competitors accumulate metal solids and
sludge. All of our processes are selected for their lowest
possible environmental impact and highest possible
quality.