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Solder Microspheres

Glass Microspheres

Glass Microspheres

Solder spheres - a little larger than microspheres

Solder spheres – a little larger than microspheres

I have not found a good answer in a search for the finite size range for solder microspheres. Glass microspheres have a defined size range of 100 nanometers to 5 millimeters in diameter. That’s too big of an upper range for solder.Forget 5mm – even .5mm is a large solder sphere.To set some size range, I think ≤200um diameter makes sense. Let me know what you think.