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ZESTRON to Present on Defluxing Ultra-Fine Pitch Die on CoWs at IPC APEX 2023
December 21, 2022 | ZESTRONEstimated reading time: Less than a minute
ZESTRON, a leading global provider of high-precision cleaning products, services, and training solutions in the electronics manufacturing and semiconductor industries, is pleased to announce that ZESTRON’s Senior Application Engineer, Ravi Parthasarathy will be presenting, “Process Considerations for Defluxing Ultra-Fine Pitch Die on CoWs”, at IPC APEX 2023 taking place in San Diego, California.
CoW (Chip on Wafer) is the next generation of CoS (Chip on Substrate) that first combines the chips to the interposer, adds wafer-level molding, and finally, they are connected to the flip chip (FC) substrate. This technology makes a better physical structure for accommodating very large die and larger overall interposer dimensions.
A continuation from the technical paper presented at APEX 2022 and titled “Defluxing of Copper Pillar Bumped Flip Chips,” this new study concentrates on cleaning under the next level of ultra-fine pitch CoW devices down to less than 25?m bump pitch and bump counts of more than 150K. This study focuses on the impact of wash temperatures and conveyor belt speed utilizing analytical/functional testing, including Visual Inspection, FTIR with color mapping, and SEM/EDX to assess cleanliness.
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ENNOVI Introduces a New Flexible Circuit Production Process for Low Voltage Connectivity in EV Battery Cell Contacting Systems
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Heavy Copper PCBs: Bridging the Gap Between Design and Fabrication, Part 1
04/01/2024 | Yash Sutariya, Saturn Electronics ServicesThey call me Sparky. This is due to my talent for getting shocked by a variety of voltages and because I cannot seem to keep my hands out of power control cabinets. While I do not have the time to throw the knife switch to the off position, that doesn’t stop me from sticking screwdrivers into the fuse boxes. In all honesty, I’m lucky to be alive. Fortunately, I also have a talent for building high-voltage heavy copper circuit boards. Since this is where I spend most of my time, I can guide you through some potential design for manufacturability (DFM) hazards you may encounter with heavy copper design.
Trouble in Your Tank: Supporting IC Substrates and Advanced Packaging, Part 5
03/19/2024 | Michael Carano -- Column: Trouble in Your TankDirect metallization systems based on conductive graphite or carbon dispersion are quickly gaining acceptance worldwide. Indeed, the environmental and productivity gains one can achieve with these processes are outstanding. In today’s highly competitive and litigious environment, direct metallization reduces costs associated with compliance, waste treatment, and legal issues related to chemical exposure. What makes these processes leaders in the direct metallization space?
AT&S Shines with Purest Copper on World Recycling Day
03/18/2024 | AT&SThe Styrian microelectronics specialist AT&S is taking World Recycling Day as an opportunity to review the progress that has been made in recent months at its sites around the world in terms of the efficient use of resources: