Chapter 6: Lead Inspection; Outline - Sharp IV-S30J User Manual

Chapter 6: Lead Inspection

6-1 Outline

Inspect the condition of IC leads and connector pins based on positional
Purpose
information 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
Reference line
Examples
Inspection procedure
1 Determine the measurement points (K0 to K3) from the mid points of the
2 Calculate the maximum and minimum distances between the leads (D0 to
3 Calculate the maximum and minimum lead lengths (L0 to L3), starting from
4 Calculate the maximum and minimum lead widths (W0 to W3) from the meas-
D0
Lead
K0 K1
W0 W1
leads and the reference line.
D2) on the reference line.
the measurement points (K0 to K3) and measuring toward the lead measure-
ment limit line.
urement points.
[Lead inspection]
D1 D2
- Number of leads K
- D0 to D2: Distance
K2 K3
- W0 to W3: Lead width
- L0 to L3:
W2 W3
6-1
Lead Inspection
between leads
6
Lead length