Patent ID: 9024630
Filing Date: 2015-05-05
Classification: G01R,H05K,Y10T

Abstract:
1. A magnetic field sensor, comprising: a circuit board having a first surface, a second surface opposite to the first surface, and a recess extending from the first surface to the second surface; and a Hall sensor component having a housing and at least one Hall sensor situated in the housing, wherein the Hall sensor has an active sensor area which is situated parallel to the first surface and in the area of the recess on the side of the second surface on the circuit board; and a first magnetic flux concentrator made of a magnetically permeable material and situated on the side of the first surface on the circuit board opposite to the Hall sensor component, wherein the first magnetic flux concentrator has a first lateral surface which faces away from the circuit board and includes a first surface area and a second lateral surface which faces toward the circuit board and includes a second surface area, and wherein the first magnetic flux concentrator has a cross-sectional area which corresponds to a longitudinal section through one-half of a single-sheet hyperboloid.