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Listed below are full
length article abstracts discussing problem resolutions that
Foresite has participated in.
Process Residues Cause
Field Performance Problems
This is a look into how
severe the consequences of ionic contamination can be to product
performance. A study was done to show how ion chromatography
results correlate to those of SIR, but ROSE testing shows no
correlation to neither ion chromatography or SIR testing.
>>Read Full Article: Process Residues Cause Field Performance
Problems
Residue Effects of
Weak Organic Acid (WOA) Flux Activators
Flux chemistries that are
not properly activated or cleaned are the most common sources of
detrimental ionic contamination. This white paper compares and
contrasts the various flux chemistry types available, and what their
potential effects are on long term reliability.
>>Read Full Article:
Residue Effects of Weak Organic Acid (WOA) Flux Activators
The Failure of a
Circuit
This article discusses
the various failure mechanisms that are cause regularly by harmful
ionic contaminants reacting with moisture and an applied voltage.
>>Read Full Article: The Failure of a Circuit
Does Conformal Coating
Stop Electrical Leakage Problems?
This analysis shows that
conformal coating is only effective if there are no ionic residues
entrapped underneath - though conformal coating may slow the
absorption of moisture, it does not over time prevent moisture
absorption and reaction with ionic contamination.
>>Read Full Article: Does Conformal Coating Stop Electrical
Leakage Problems?
Power Module Failures:
The Problem with Zinc Whiskers
An interesting study on
how zinc and tin whisker growth directly correlates with amounts of
ionic contamination.
>>Read Full Article:
Power Module Failures: The Problem with Zinc Whiskers
How Clean is Clean?
A study that examines how
Ion Chromatography with C3 localized extraction correlates well with
product performance while ROSE testing can overlook pockets of
contamination.
>>Read Full
Article: How Clean is Clean?
Process Control &
Qualification of Cleanliness Issues
A DOE study showing how
C3 testing and extraction techniques can incorporate into an
effective process qualification protocol
>>Read Full
Article: Process Control & Qualification of Cleanliness Issues
Terminal Block Manufacturing Residue Issues
Provides data and recommendations on boards with terminal block
manufacturing.
>>Read Full Article: Terminal Block Manufacturing Residue Issues
How Clean is This Spot?
Looks at how localized extraction techniques can be used in
conjunction with Ion Chromatography to look at specific area
cleanliness.
>>Read Full
Article: How Clean is This
Spot
PWB Contamination & Reliability DOE
This article was written by a customer of ours, Phoenix
International, and incorporates our data and findings to implement
cleanliness parameters in electronics manufacuring.
>>Read Full Article: PWB Contamination & Reliability
DOE
Can you Clean a No Clean?
This article looks at a specific case involving NTF returns with a
customer using a no-clean process, and looks at developing a
successful cleaning protocol for cleaning assemblies constructed
with a no-clean process.
>>Read Full
Article: Can you Clean a No Clean?
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