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11 Station Extensions/Options SIPLACE 80S-20/F4/F5 User Manual 11.6 Ceramic Substrate Centering 05/99 Issue from Software Version SR.405.xx 11 - 32 1 1.6.4 T echnical Dat a 1 1.6.5 Optical Centering with Oblique Lighting…
SIPLACE 80S-20/F4/F5 User Manual 11 Station Extensions/Options
05/99 Issue from Software Version SR.405.xx 11.6 Ceramic Substrate Centering
11 - 31
Fig. 11.6.2 Ceramic substrate centering (side view)
Key to Fig. 11.6.2
1 Ceramic substrate 2 See Section 11.6.3.2
11.6.3.3 Maintenance
- The spherical rotating guide in the x centering unit must be cleaned and lubricated.
- When necessary, check the pneumatic drive for ease of running.
- Maintenance of the conveyor is as described in Section 9.3.2.
11 Station Extensions/Options SIPLACE 80S-20/F4/F5 User Manual
11.6 Ceramic Substrate Centering 05/99 Issue from Software Version SR.405.xx
11 - 32
11.6.4 Technical Data
11.6.5 Optical Centering with Oblique Lighting
11.6.5.1 General Comments
With optical ceramic substrate centering the special conditions of the ceramic substrate must be taken into
consideration. Contrast will be heavily dependent on the paste which is used for the alignment structure, on
the clear surroundings of the alignment structure, and on the type of illumination.
The oblique lighting facility is located on the front part of the UP camera (undergantry camera).
Fig. 11.6.3 Oblique light lighting unit for the UP camera
- Key to Fig. 11.6.3
1 Top view of the oblique lighting unit 2 Side view of the oblique lighting unit
Ceramic substrate centering
Usable substrate sizes 50 mm x 50 mm (2" x 2") up to a max. of 4" x 7"
(Further sizes on request)
Compressed air supply 5 bar
SIPLACE 80S-20/F4/F5 User Manual 11 Station Extensions/Options
05/99 Issue from Software Version SR.405.xx 11.6 Ceramic Substrate Centering
11 - 33
This oblique lighting unit can be switched on as an alternative to the existing lighting (see the table in Section
11.6.2).
NOTE
The oblique lighting unit can only be used with the undergantry camera.
11.6.5.2 Fiducial Recommendations for Ceramic Substrates
With ceramic substrates the contrast between the carrier material and the conductor layer is generally very
low. For this reason when fiducials are selected, certain criteria must be observed regarding the shape and
structure of the fiducials. Our recommendations regarding the shape and structure of the fiducials are given
below.
l Shape of the fiducial
We suggest a rectangle or square with a side length of >
1 mm and a free space around it of not less than
0.5 mm.
Fig. 11.6.4 Recommended shape for a fiducial
NOTE
Simple crosses are also suitable, but do require more space.
0.5 mm
1.0 mm