Electronic controller
AssigneeDenso Corporation
InventorAtsushi Kashiwazaki
Life of this patent
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Abstract
An electronic controller having a circuit board with an element disposed thereon, a base member with the circuit board adhered thereon and a lead terminal in an electrical connection with the circuit board includes as the elements thick film resistors and electric components soldered by solder on a bottom side of the circuit board, and also includes electronic components including bare chips being at least wired without soldering on a top surface of the circuit board. The electronic controller has a first concave portion at a position corresponding to a position of the components on a surface that has the circuit board of the base member adhered thereon, and the circuit board is molded by a sealing resin so as to expose a portion of the base member and a portion of the lead terminal.
Claims2
An electronic controller comprising:
- a circuit board that has an element mounted thereon for composing a circuit;
- a base member that has the circuit board adhesively fixed thereon;
- and
- an external terminal that is electrically connected to the circuit board,
- wherein a base member facing side of the circuit board that is adhered to the base member has as the element a thick film resistor disposed thereon and an electronic component that is mounted thereon by soldering,
- a reverse side of the circuit board that opposes the base member facing side to be adhered to the circuit board has as the element an electronic component that includes a bare-chip that is at least connected by wire for mounting without soldering,
- a first side of the base member that has the circuit board adhered thereto has a first concave portion at a position that corresponds to the electronic component being mounted on the circuit board,
- the circuit board is molded with a part of the base member and a part of the external terminal respectively being exposed from molding, and
- the first concave portion has in a planar direction of the circuit board at least one of an end that has an opening on an end surface of the base member and a portion that extends out of a disposition area of the circuit board on the base member.
Dependencies are inferred from the claim text.