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13
24.5
42.1
12.5
55.5
30.0
37.5
27.5
29.2
IC socket
(NQPACK144SD manufactured by
Tokyo Eletech Corporation)
User system
Spacer (φ6.0)
39.19
24.5
24.5
39.19
EV-chip unit
External bus trace unit
Pin 1
Unit: mm
Dimension and tolerance
Tolerance
±0.05
±0.10
±0.15
±0.20
±0.30
Dimension
Up to 1.2
1.3 to 2.0
2.1 to 5.0
5.1 to 10.0
10.1 or above
Figure 7 Resulting Dimensions after Connecting User System Interface Board (when
Connecting External Bus Trace Unit and EV-Chip Unit)