I347-AT4 Datasheet, PDF (147/148 Pages) Intel Corporation – Intel® Ethernet Network Connection I347-AT4 Datasheet

Thermal Design Recommendations — I347-AT4
7.10.1.1 Attaching the Thermocouple (No Heat Sink)
Following the guidelines listed in Section 7.10.1, attach the thermocouple at a 0° angle if there is no
interference with the thermocouple attach location or leads (see Figure 7.6).
Figure 7.6. Technique for Measuring T_case with 0° Angle Attachment, No Heat Sink
7.10.1.2 Attaching the Thermocouple (With a Heat Sink)
In addition to the guidelines listed in Section 7.10.1, the following is also recommended when
measuring the T_case with a heat sink.
• For testing purposes, a hole (no larger than 0.150 inches in diameter) must be drilled vertically
through the center of the heat sink to route the thermocouple wires out.
• Attach the thermocouple at a 90° angle if there is no interference with the thermocouple attach
location or leads (see Figure 7.7).
• Ensure there is no contact between the thermocouple cement and heat sink base as that provides a
heat transfer path from the thermocouple to the heat sink that can affect the thermocouple
reading.
Figure 7.7. Technique for Measuring T_case with 90° Angle Attachment
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