What This Sink Cools and Where It Fits
The TE Connectivity 1542618-2 is a ChipCoolers series heat sink, specified as an accessory for XFP connector modules. The tray packaging suggests it ships in bulk quantities for production-line kitting, not as a single retail unit.
Compatibility Check — Not All XFP Sinks Are the Same
The 1542618-2 is listed for use with XFP connectors, but compatibility depends on the specific cage and module height. XFP cages vary in stack height and latch clearance; this sink is designed for the standard XFP form factor but should be verified against the exact cage part number and board layout. No thermal interface material is included — that is a separate order for the gap between the module top and the sink base.