TCB and Copper Pillar Flux
Cu-Pillar Flip-Chip Flux is a dipping flux designed for use in thermocompression bonding flip-chip copper pillar applications. Its rheology and chemical design enables its use with dipping depths down to 10 microns or less.
The amount of flux deposited on the substrate can be optimized by changing equipment parameters. Key variables include temperature, copper-pillar dimensions, shear speed, time of shearing before dipping, dwell time in flux, and depth of immersion. The flux rheology can be optimized for the desired application by shearing to achieve the desired viscosity.
Packaging is available in 10cc and 30cc syringes.
Related Markets and Applications
Top TCB and Copper Pillar Flux Documents
Product Data Sheet
Storage and Handling of Specialty Fluxes (Letter)
Compatibility of Polymers and Fluxes: Getting to the Heart of the Matter (Paper)
Solder Bumping Via Paste Reflow For Area Array Packages (Paper)
TCB and Copper PIllar Flux Technical Documents
Safety Data Sheets
Flux Blog Posts
No matter how accurate the spray fluxer is there will at least be some flux that is not deposited on the board that needs to be removed from the system. I mentioned in my previous post that all spray fluxer setups need to have their own venting system, separate from the soldering station vent system. The…
The total loss system is a method of applying spray flux that utilizes the minimal amount of material to properly create a satisfactory solder joint. In this process, the flux is sprayed directly onto the PCB from a sealed container. All of the flux from the container is used, either by applying it to…
If you haven’t heard about Bi-containing (bismuth) solder alloys recently, that may change in the near future. Low-melting Bi-containing solders are now in increasing use and gaining popularity due to their lower melting temperatures—58Bi/42Sn is eutectic at 138°C and 57Bi/42Sn/1Ag melts…
Andy C. Mackie, PhD, MSc
Senior Product Manager, Semiconductor Assembly Materials
From One Engineer to Another®
All of Indium Corporation’s products and solutions are designed to be commercially available
unless specifically stated otherwise.