Cascade Microtech InfinityQuad Probe Pad Layout Rules - Manual

PN 154-631-2 www.cascademicrotech.com InfinityQuad Probe PAD Layout Rules • 1
Rule 100: Pad Size
Minimum pad sizes are shown in Table 1 and Table 2 .
The longer dimension on the rectangular pad represents the direction of probe scrub. To provide for probing ease and
parasitics low enough for many applications, use 100 x 100 µ pads for 150 µ pitch and above, unless there is a reason to
do otherwise. Increase pad size when using an autoprober to account for errors. The recommended amount of increase
depends on the station and the type of measurement. As a general rule, however, increase the pad size by 5 µ in both
length and width.
Table 1. Minimum pad size rule in 5 µ increments (units in µ x µ).
N OTE
Recommended minimum pad sizes include error margins for automated measurements (on
a Cascade Microtech semi-automatic station) and over temperature probing (-40° to
+125°C).
# of Contacts
(include X)
75 µ
pitch
80 µ
pitch
100 µ
pitch
125 µ
pitch
150 µ
pitch
200 µ
pitch
250 µ
pitch
4 25 x 45
5
6
7
8
9
10 30 x 50
11
12
13
14
15
16
35 x 55
17
18
19
40 x 60
20
21
22
23
45 x 65
24
25
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InfinityQuad Probe: Pad Layout Rules
Quick Reference Guide