Strategically placing sensors to measure "Delta T"—the temperature difference between the hottest and coldest spots on the board.
The IPC-7801 PDF offers several benefits to manufacturers, assemblers, and inspectors, including:
Proving that the oven can deliver the same thermal energy to an assembly every time. 📜 IPC-7801 vs. IPC-7530
IPC-1710 covers PCB mount hole requirements (padstack design). IPC-7801 covers the torque applied to hardware placed in those holes.
: It provides a methodology for establishing a baseline profile and performing periodic checks to detect performance drift.
It should have thermal characteristics similar to the production boards but remains constant over time.
: IPC-7801 references a Cpk ≥ 1.33 as a standard threshold for acceptable process capability.