Chapter 6: Lead Inspection - Sharp IV-S30 User Manual

Chapter 6: Lead Inspection

Inspect the condition of IC leads and connector pins based on positional information
Purpose
obtained from the gray scale search function. (No. of leads or pins that can be detected:
Max. 128 pieces)
Applications Inspect IC leads or connector pins
[Inspect the layout of the IC leads and connector pins]
Lead measure-
ment limit line
Lead
Reference line
Examples
- Inspection procedure
1 Determine the measurement points (K0 to K3) from the mid points of the leads and
the reference line.
2 Calculate the maximum and minimum distances between the leads (D0 to D2) on
the reference line.
3 Calculate the maximum and minimum lead lengths (L0 to L3), starting from the
measurement points (K0 to K3) and measuring toward the lead measurement limit
line.
4 Calculate the maximum and minimum lead widths (W0 to W3) from the measure-
ment points.
D0 D1
K0 K1 K2
W0 W1 W2
6-1
[Lead inspection]
D2
- Number of leads K
- D0 to D2: Distance
K3
- W0 to W3: Lead width
- L0 to L3:
W3
Lead Inspection
between leads
6
Lead length