RF-shielding housing for a circuit, for example for the control circuit of a motor-vehicle air-bag

Abstract

An RF-shielding multicomponent metallic or metal-coated circuit housing (W, D) contains a printed circuit board (L), and a plug (S) which is connected to plug terminals (P) provided in the printed circuit board (L). A housing section (W) has a bay (E/B) which has metallic or metal-coated walls (B) which are at housing potential in the assembled state of the housing (W, D) and in which (E/B) the plug (S) is mounted. The bay (E/B) is open at one side face (M), the "open side face" (M), facing the inside (Q) of the housing, the bay (E/B) having edges (C) situated in a single plane and facing the open side face. The open side face (M) is covered by the printed circuit board (L) in the assembled state of the housing (W, D). The printed circuit board (L) is coated over a large area of its section (M) facing the bay (E/B) with a conducting layer (M) in such a way that strips of said layer (M) rest on the edges (C) in the assembled state of the housing (W, D) so that the layer (M) covers the bay (E/B) and the layer (M) is then at housing potential.

Dependencies are inferred from the claim text.