Cascade Microtech InfinityQuad Probe Pad Layout Rules - Manual (Page 4)

PN 154-631-2 www.cascademicrotech.com InfinityQuad Probe PAD Layout Rules • 4
Rule 104: Single-Row Pad Spacing
The minimum center-to-center pad spacing for opposing, side-by-side probes contacting the same line of pads is 40 µ +
(Pitch_A + Pitch_B) / 2.
Rule 105: Parallel-Row Pad Spacing
The minimum center-to-center pad spacing between facing probes on parallel rows of pads is 150 µ. Note that this spacing
is based on no more than 150 µ of applied probe overtravel. The purpose of this rule is to avoid potential excessive
overtravel conditions which may result in contact between opposing probes. For some cases, it may be necessary to
reduce the spacing to 65 µ (for example, 138-356 ISS with 0.5 ps thru).
Rule 106: Pad Height Variation
The maximum pad height variation in a row of pads is 0.5 µ. Pad height variation usually occurs because pads are
constructed using different metal stacks. Be sure to use the same metal layers to construct all pads.
InfinityQuad Probe: Pad InfinityQuad Probe: Pad Layout Rules