Optical & XRay Fit

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Optical inspection devices for looking at the balls of BGA a... - Jun 18, 2001 by davef OnBoard Forums

Dave; See my answer to "Alternate to X-ray" The combinatio... - Jun 18, 2001 by OnBoard Forums

davef

#6957

Optical & XRay Fit | 18 June, 2001

Optical inspection devices for looking at the balls of BGA are becoming more prevalent. How do these devices and conventional xray fit together as complemtary tools in the day-to-day product environment?

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Gil Zweig

#6958

Optical & XRay Fit | 18 June, 2001

Dave; See my answer to "Alternate to X-ray" The combination of endoscope optical inspection with x-ray inspection provides the most effective means of BGA inspection. Transmission x-ray provides a very rapid means of qualifying then process control of reflow. When suspicious "signatures" are observed in the ball bond image pattern, then endoscopic inspection is indicated.

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