We have a 8 layers board.
one of our inner layers is getting two power plane shapes -12v and +12v with a distance of 0.4mm between the shapes.
Are the Creepage and the air clearance defined for all layers of the board stack up or only for TOP and BOTTOM ? If the board passes Dialectic strength safety stress and still has 0.4mm shape to shape distance is it valid?
one of our inner layers is getting two power plane shapes -12v and +12v with a distance of 0.4mm between the shapes.
Are the Creepage and the air clearance defined for all layers of the board stack up or only for TOP and BOTTOM ? If the board passes Dialectic strength safety stress and still has 0.4mm shape to shape distance is it valid?