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At Topsearch, reliability
is one of our top concerns. By employing top talent and some of
the most advanced equipment, we are able to maintain high levels
of reliability. Above and beyond customers requirements such as
SEC, SIR, Gold porosity, low resistance short detection, wave soldering
and IR assembly machines, we also internally use advanced technologies
like CAT, SEM/EDAX, Perfectest/X-ray CMM, and IST
+ Registration£º
Internal Registration: We take internal registration very
seriously; with over 6 manual x-ray systems; 100% x-ray optimization
prior to drill, and perfectest, we are insured to meet the customers
tightening specifications
 Perfectest£º
The glass standard
for internal registration, This machine electrical tests the panel
in 4 corners and displays the operator friendly results immediately.
We have even taken this machine the next level to allow our engineers
to pinpoint weakening registration locations
X-ray
Optek£º This is
our newest tool. The Optek allows us to increase the accuracy of
internal registration checks. The x-ray improves the positional
accuracy to 0.5 mils allowing us to trouble
+ PTH Reliability£º
Buy using IST, Air to Air, and Liquid to Liquid testing, we can
insure that our products are run under the best possible conditions.
These three provide us an additional level of process control, by
allowing us to see, what cannot be viewed by other methods like
cross-sections or solder float. It allows us to fix potential problems
before they turn into quality or reliability issues
IST£º
IST is our newest addition into our PTH reliability testing. IST
uses an electrical current to simulate thermal cycling. It is also
capable of stopping the cycles exactly at the point of failure,
allowing trouble shooting to be much more accurate.
Air
to Air£º This temperature cycling provides a gradual ramp
on temperature. This process is most standard outside of the solder
shock
Liquid
to Liquid£º With liquid as the medium the heat transfer is
much quicker allowing results in a much quicker time.
Pressure
cooker£º The pressure cooker allows us to set the most efficient
and reliable process parameters for each of our material. This machine
is much more effective than solder floating alone.
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Surface finish£º With
the almost unlimited supply of surface finishes we have, surface
quality requires special machinery.
Wetting
Balance£º To insure good solder ability at our customer¡¯s
sites we have purchased a wetting balance machine, this allows us
to proactively prevent problems on the process lines. It helps us
to set process controls, as well as QC sampling
Ionic
Chromatograph£º To measure the level of anionic contaminants
on the surface of the PCB. The in-house control here is to focus
on - Cl , Br and SO4 residue remains on the PCB surface to determine
the cleanliness control.
SEM/
EDAX£º We are one of few board shops that own a SEM. This
is not only used for quick and help in troubleshooting, but is also
used for process control, allowing us to derive process parameters
from the high quality pictures
CAT£º
We were such an avid user of CAT technologies that we bought
one of the first available ¡°portable¡± CAT systems. We have logged
many hours on this system allowing us to improve conductor and space
height and width control, exposure system controls, internal registration,
via hole reliability, even buried resistor capability.
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Reliability
