Patent ID: 8085035

Claim:
A Hall element adapted to detect a magnetic field component perpendicular to a substrate surface including an n-type impurity region located in a surface of a p-type semiconductor substrate layer, said n-type impurity region functioning as a magnetic sensing part, characterized in that a p-type impurity region is located in a surface of said n-type impurity region, and said n-type impurity region is surrounded by a p-type substrate region of said p-type semiconductor substrate layer, and an impurity concentration N in surface of said n-type impurity region is 1×10 16 (atoms/cm 3 )≦N≦3×10 16 (atoms/cm 3 ), and a distribution depth D to a depth at which the impurity concentration in surface of said n-type impurity region does down to one-tenth from surface of said n-type impurity region is 3.0 μm≦D≦5.0 μm.