In a 20-position header pulling 3 A on every circuit, the total heat is 60 A × contact resistance — keep the ambient under 105°C and the derating curve in the product drawing applies above 25°C.
Last Buy — Plan the BOM Window
This part is officially in Last Buy status. That means the manufacturer has stopped regular production, and the remaining inventory is the final run. Once it's gone, there is no direct replacement from TE with the same footprint — a board spin or a cross-ship from independent stock will be the only options. For a production BOM still using this header, now is the time to secure the lifetime buy quantity or qualify a substitute.
Gold Mating Finish — 15 µinch for Controlled Environments
The post tails are tin-lead (100 µinch), which solders into the plated through-hole without additional flux compatibility concerns.
Through-Hole Termination — Solder Joint Reliability
A board-level retention feature would help, but this design relies on the solder joint for mechanical hold.