Smart Gui - Algorithm Training Material_rev1.pdf - 第222页
Copyright © ViT rox All Rights Reserved . U-type Algorithm - 3D Multijoint (Solder Profile Inspection) 222 1. Identify Pad Area: ● Must have epad information. ● If no manually add the pad location. 2. Identify Solder T o…
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U-type Algorithm - 3D Multijoint (Solder Profile Inspection)
221
1. Fillet Solder Length (%) & Fillet Width (%)
● The overall pass criteria depends on:
a. Solder Width (%) > Solder Width Thres (%)
b. Solder Length (%) > Solder Length Thres (%)
c. Both solder Length and Solder Width must pass.
● Pass Criteria for single pixel:
a. Measured Grayscale < Joint Grey Thres
b. Solder Height (%) > Joint Height Thres (%).
c. OR Relation between 2D and 3D as pass criteria for single pixel
Width
Length
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U-type Algorithm - 3D Multijoint (Solder Profile Inspection)
222
1. Identify Pad Area:
● Must have epad information.
● If no manually add the pad
location.
2. Identify Solder Toe area:
● Good solder slope - Pass
● Flat Solder - Proceed to cold solder inspection.
Pass
Fail
Pass
3. Identify Cold Solder:
● The solder height threshold will affected by
the lead height (s,u) & Body Height (B) set.
(Next Page)
Flat solder / Excess Solder
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223
For this case:
Lead Height set to 100 um
Slope SolderHeight Thres set to 50 um
Measured Fillet height = 135 um
Measured Fillet Height > Fillet Height Thres
Why Failed???
U-type Algorithm - 3D Multijoint (Solder Profile Inspection)