Chapter 6: Lead Inspection; Outline - Sharp IV-C35M 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
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 measure-
ment limit line.
4 Calculate the maximum and minimum lead widths (W0 to W3) from the meas-
urement points.
D0 D1
Lead
K0 K1
W0 W1
6-1
[Lead inspection]
D2
- Number of leads K
- D0 to D2: Distance
K2 K3
- W0 to W3: Lead width
- L0 to L3:
W2 W3
Lead Inspection
6
between leads
Lead length