Cascade Microtech Pyramid Probes - Manual (Page 2)

PN 153-690-3 www.cascademicrotech.com Pyramid Probes: New Core Inspection • 2
Step 2: Low Magnification Microscope Inspection
Inspection Area Criteria
Membrane
Are there any tears noted anywhere on the membrane?
A membrane tear is defined as a torn membrane caused by mishandling or
equipment malfunction. Tears on a new core that have been repaired by the
factory are acceptable, as long as the repaired patch does not exceed
1000μm.
Has the membrane come off the alignment pin?
WARNING: Do not install in a box or board until repaired.
Contact local support for instructions.
Is there any damage to the membrane?
Escalate to a higher magnification inspection to determine if there is a
failure.
Is the probe face clean of any debris?
Follow the procedure in Pyramid Probe Core Off-line Cleaning With Brush to
clean the face after incoming inspection is complete.
Are there scratches on the wings with exposed metal?
Scratches on the wings are acceptable as long as the metal is not exposed.
Plungers
Are there any cracks in the plunger beams from the tester side?
These types of cracks are not acceptable on new cores.
Are there any cracks in the plunger beams from the wafer side?
These types of cracks are not acceptable on new cores.
Repaired membrane, acceptable
Tear in membrane
Tester Side
Wafer Side
Pyramid Probes: New Core Inspection