Chip on Board - PCB Preparation
Chip on Board Contents
Visual Inspection for PCB
Foreign materials, contamination
Pinhole, scratch
Discoloration, Cu exposure (bare Cu/skip plating)
Surface defects, nodules, burr, gold hills
Mouse bites / dish down, odd pad shape
Over / under etching
Source:GJ Technology
COB PCB Cleaning
Remove Foreign Material
Remove Ion Contamination
Organic Foreign Material
Plasma Cleaning Wire Bond Yield Enhancement
