Fiducial Locator for Jet Dispense

The Fids-on-the-Fly option for Asymtek’s Spectrum S-900N series dispensing platforms was developed in response to customer need for increased speed and precision for dispense operations on more densely populated substrates. The substrate is scanned in one pass to locate fiducials prior to the jet dispensing operation. The camera is always in motion, snapping images on the fly. It is reportedly up to 5.5 times faster than traditional stop-and-capture modes for locating fiducials, which translates into increase units per hour (UPH) of completed parts by as much as 35%.

In operation, the proprietary software calculates a spline travel path based on the programmed fiducial locations in the dispense program. Once the path is calculated, image-capture is performed at maximum acceleration and velocity without stopping. Fids-on-the-Fly uses a high-speed digital camera that operates at 60 frames/second. High-intensity on-axis LED light with adjustable red, green and blue (RGB) light levels enable reliable fiducial capture for even the most difficult applications.

In semiconductor applications, the technology is suitable for die-to-wafer alignment for 3-D stacking or for large boards for package-on-package processes. Asymtek, a Nordson Company Carlsbad, CA;


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