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AD8227 leadframe

I have a question about the material of the leadframe of the AD8227.

The AD8227 and AMR (magnetic sensor) are located on the PCB.
The material of the leadframe may affect the sensor.
Iron-based materials seem to affect sensors in particular.
Please tell me some data on the material of the leadframe.

I asked a similar question " ".
I got the answer that the leadframe of AD8237 is C 7025.
The customer says "C 7025 will not affect AMR."
My customers are satisfied with this answer.
Is the leadframe of the AD8227 also C7025?


Best regards