1. 3.3.13 Wicking: Requirements
IPC-600H,
Acceptable Class 3
Wicking does not exceed 80 μm [3,150 μin]
Acceptable Class 2
Wicking does not exceed 100 μm [3,937 μin]
Acceptable Class 1
Wicking does not exceed 125 μm [4,921 μin]
IPC-6012C, paragraph 3.6.2
IPC-6013B, paragraph

2. Note: Wicking is measured from the laminate edge excluding the plating
No wicking present (Target)
80 μm [ in] maximum allowed (Class 3)
Figure 3313a
Target Condition
Figure 3313b
Acceptable Class 3
Note: Wicking is measured from the laminate edge excluding the plating

3. Note: Wicking is measured from the laminate edge excluding the plating
100 μm [ in] maximum allowed (Class 2)
125 μm [ in] maximum allowed (Class 1)
Figure 3313b
Acceptable Classes 1 & 2
Note: Wicking is measured from the laminate edge excluding the plating

4. Nonconforming all Classes
Wicking
Defects either do not meet or exceed above criteria
Wicking measures µm [ in]
Figure 3313c
Nonconforming all Classes

5. 3.3.13.1 Wicking/Clearance Holes: Requirements
IPC-600H,
Acceptable All Classes
Wicking does not reduce conductor spacing less than specified minimum
Acceptable Class 3
Wicking does not exceed 80 μm [3,150 μin]
Acceptable Class 2
Wicking does not exceed 100 μm [3,937 μin]
Acceptable Class 1
Wicking does not exceed 125 μm [4,921 μin]
IPC-6012C, paragraph 3.6.2
IPC-6013B, paragraph

6. 3.3.13.1 Wicking/Clearance Holes
No wicking of conductive material into base material or along the reinforcement material
A: Surface Pad
B: Dielectric Material
C: Adjacent Noncommon Conductors
D: Surface Plating
Figure 33131a
Target Condition

7. 3.3.13.1 Wicking/Clearance Holes
Acceptable for Class 3
(A) < 80 μm [3150 μin]
(B) does not reduce conductor spacing below minimum requirements
Acceptable for Class 2
(A) < 100 μm [3937μin]
Acceptable for Class 1
(A) < 125 μm [4921μin]
Figure 33131b
Acceptable all Classes

8. 3.3.13.1 Wicking/Clearance Holes
Nonconforming all Classes
(A) exceeds 125 μm [ in]
(B) reduces conductor spacing below minimum specified requirements
Figure 33131c
Nonconforming all Classes