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KYZEN to Present "The Relationship Between Cleanliness and Reliability/Durability" at SMTA China East Conference

Mar 30, 2021

KYZEN is pleased to announce that Daniel Gao, Sales Manager – Northern and Western China, will present during the SMTA China East Conference on April 22, 2021. Gao will present “The Relationship Between Cleanliness and Reliability/Durability.”

Cleaning, or lack thereof, can have a serious impact on the long-term durability and reliability of some finished products. Using a single number conductive measurement limit as a control basis for key precision or critical cleaning processes can be tremendously risky and expensive. IPC removed from the J-STD-001 Rev. H, the ROSE limit of 1.56 µg/cm² as a statement of “Clean” due to modern flux, component, and board designs. One size no longer fits all with today’s technology.

This is the reason the IPC J-STD-001 no longer sets a limit for the ROSE, and in fact, WP-019B states “passing the ROSE test using the 1.56 µg/cm² value, does not guarantee that an assembly is clean, good or acceptable.”  Likewise, the PM-019B also states there are no pass-fail levels for Cation or Anion levels in Ion Chromatography.  The question, answer, and responsibility falls on the manufacturer and/or OEM to determine the acceptable ROSE limit that will meet their cleanliness needs for reliability, based on objective evidence.

In this paper, Gao will explore how a PCB can achieve a ROSE value under the previous 1.56µg/cm² recommended limit, as well as industry acceptable limits of ion chromatography, yet still not meet the reliability and durability requirements of field operation.

He will further explore why some products can pass with a higher number and/or a different cleanliness measurement, how you can avoid mistakes in a very competitive market and reduce your cost while improving your brand reputation.

Based in BeiJing, Gao has more than 15 years of experience in semiconductor applications and electronic assemblies including wafer bumping processes, flip chip packaging, LED packaging and PCB assembly applications. Gao has worked for KYZEN for more than ten years, responsible for sales, marketing and customer technical support, cooperating with solder paste and cleaning machine suppliers in Northern and Western China.


KYZEN is a global leader in providing environmentally responsible, RoHS compliant precision cleaning chemistries for industries ranging from electronics and advanced packaging to metal finishing and aerospace applications. Since its founding in 1990, KYZEN’s innovative cleaning technologies, scientific expertise and customer support have been repeatedly recognized with the industry’s most prestigious awards. For more information, visit www.kyzen.com.

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