Intel S975XBX2 - Workstation Board Motherboard Specification page 96

Intel Workstation Board S975XBX2 Technical Product Specification
Table 47. Lead-Free Board Markings
Description
Lead-Free 2 nd Level
Interconnect: This symbol is
used to identify electrical and
electronic assemblies and
components in which the lead
(Pb) concentration level in the
desktop board substrate and the
solder connections from the board
to the components (second-level
interconnect) is not greater than
0.1% by weight (1000 ppm).
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