Abstract: The present invention provides a pressure detection unit and a pressure sensor using the same that have a high degree of airtightness and that are capable of suppressing bonding defects even when the base is made of ceramics. In the pressure detection unit, a linear expansion coefficient of ceramic that forms the ceramic base 110 is set to ?1 (10?6/K) and a linear expansion coefficient of metal that forms the metal ring member 140 is set to ?2 (10?6/K), a relationship of 0.7×?2??1 exists between the linear expansion coefficients ?1 and ?2, and the metal ring member 140 is formed of a metal such as SUS420J2, SUS410, or SUS444, for example, which does not precipitate aluminum oxide on a brazing surface with a projecting portion.

Abstract: [Object] Provided are a pressure detection unit and a pressure sensor using the same capable of performing a trimming operation using a simple structure during an assembly operation, and reducing a decrease in detection accuracy of a semiconductor type pressure detection device. [Solving Means] A pressure detection unit includes a base formed in a lid shape and made of ceramic, a receiving member formed in a plate shape, a diaphragm interposed between the base and the receiving member, a semiconductor type pressure detection device installed on a side of a pressure receiving space formed between the base and the diaphragm in the base, and three terminal pins electrically connected to the semiconductor type pressure detection device, the terminal pins penetrating the base, wherein the three terminal pins include an earth terminal pin, a power input terminal pin, and a signal output terminal pin.

Abstract: A pressure detection unit includes a pressure receiving structure including a ring-shaped ring member, a receiving member facing the ring member, and a diaphragm interposed between the ring member and the receiving member, a base made of ceramic joined to the ring member to form a pressure receiving space between the base and the diaphragm, a semiconductor type pressure detection device installed on a side of the pressure receiving space of the base, and a terminal pin which is electrically connected to the semiconductor type pressure detection device and penetrates the base.

Abstract: A pressure detection unit and a pressure sensor using the same capable of suppressing an increase in manufacturing man-hours due to use of an additional member, and ensuring insulation of a semiconductor type pressure detection device. The pressure detection unit includes a base formed in a lid shape and made of ceramic, a receiving member formed in a plate shape, a diaphragm interposed between the base and the receiving member, a semiconductor type pressure detection device installed on a side of a pressure receiving space formed between the base and the diaphragm in the base, and terminal pins electrically connected to the semiconductor type pressure detection device. The terminal pins penetrate the base, where a metal layer is provided in a region around the semiconductor type pressure detection device on a surface of the base on the side of the pressure receiving space.

Abstract: According to the invention, a pressure receiving space of a pressure sensor is prevented from being charged. In the pressure sensor, a diaphragm is mounted on a base fixed in a cover to form the pressure receiving space in which oil is sealed. A semiconductor pressure detection device is provided in the pressure receiving space, and adjustment lead pins and an earth-terminal lead pin are connected to terminals of the semiconductor pressure detection device by bonding wires. A wiring substrate is provided with the base of the pressure receiving space interposed and faces the base, and a metal foil is provided such that one or more lead pins of the adjustment lead pins and the earth-terminal lead pin are electrically connected in the wiring substrate. Therefore, the charging of the insulative medium sealed in the pressure receiving space is prevented.

Abstract: [Object] Provided are a pressure detection unit and a pressure sensor using the same capable of performing a trimming operation using a simple structure during an assembly operation, and reducing a decrease in detection accuracy of a semiconductor type pressure detection device. [Solving Means] A pressure detection unit includes a base formed in a lid shape and made of ceramic, a receiving member formed in a plate shape, a diaphragm interposed between the base and the receiving member, a semiconductor type pressure detection device installed on a side of a pressure receiving space formed between the base and the diaphragm in the base, and three terminal pins electrically connected to the semiconductor type pressure detection device, the terminal pins penetrating the base, wherein the three terminal pins include an earth terminal pin, a power input terminal pin, and a signal output terminal pin.

Abstract: [Object] Provided are a pressure detection unit and a pressure sensor using the same capable of suppressing an increase in manufacturing man-hours due to use of an additional member, and ensuring insulation of a semiconductor type pressure detection device. [Solving Means] A pressure detection unit includes a base formed in a lid shape and made of ceramic, a receiving member formed in a plate shape, a diaphragm interposed between the base and the receiving member, a semiconductor type pressure detection device installed on a side of a pressure receiving space formed between the base and the diaphragm in the base, and terminal pins electrically connected to the semiconductor type pressure detection device, the terminal pins penetrating the base, wherein a metal layer is provided in a region around the semiconductor type pressure detection device on a surface of the base on the side of the pressure receiving space.

Abstract: [Object] Provided are a pressure detection unit and a pressure sensor using the same capable of preventing a decrease in detection accuracy of a semiconductor type pressure detection device even when a high voltage is accidentally applied. [Solving Means] A pressure detection unit includes a pressure receiving structure including a ring-shaped ring member, a receiving member facing the ring member, and a diaphragm interposed between the ring member and the receiving member, a base made of ceramic joined to the ring member to form a pressure receiving space between the base and the diaphragm, a semiconductor type pressure detection device installed on a side of the pressure receiving space of the base, and a terminal pin which is electrically connected to the semiconductor type pressure detection device and penetrates the base.

Abstract: The invention prevents a pressure receiving space of a pressure sensor from being electrically charged. In a pressure sensor, a diaphragm is attached to a base which is fixed within a cover and a pressure receiving space in which an oil is sealed is formed. A semiconductor type pressure detecting device is connected to a plurality of terminal pins by a bonding wire. A neutralization plate attached to a periphery of the semiconductor type pressure detecting device or a part of the periphery thereof is connected to an earth terminal pin by an earth bonding wire, or is connected to the earth terminal pin by a soldering so as to prevent an insulative medium sealed within the pressure receiving space from being electrically charged.

Abstract: According to the invention, a pressure receiving space of a pressure sensor is prevented from being charged. In the pressure sensor, a diaphragm is mounted on a base fixed in a cover to form the pressure receiving space in which oil is sealed. A semiconductor pressure detection device is provided in the pressure receiving space, and adjustment lead pins and an earth-terminal lead pin are connected to terminals of the semiconductor pressure detection device by bonding wires. A wiring substrate is provided with the base of the pressure receiving space interposed and faces the base, and a metal foil is provided such that one or more lead pins of the adjustment lead pins and the earth-terminal lead pin are electrically connected in the wiring substrate. Therefore, the charging of the insulative medium sealed in the pressure receiving space is prevented.

Abstract: Provided is a pressure sensor that is equipped with a pressure detection element and is capable of preventing data of an EPROM from being lost by application of high-voltage pulse noise to a writing terminal. A GND terminal (21d) that is one of output terminals of the pressure detection element (21) and an EPROM drain terminal (21h) that is one of EPROM writing terminals are connected via a capacitor (60). The GND terminal (21d) is grounded via a lead pin (33A). With this configuration, even when the high-voltage pulse noise is applied to the EPROM drain terminal (21h) and a lead pin (36a) connected to the EPROM drain terminal (21h), the high-voltage pulse noise can be released to ground via the capacitor (60), and data of EPROM (21a) can be prevented from being lost.

Abstract: The invention prevents a pressure receiving space of a pressure sensor from being electrically charged. In a pressure sensor, a diaphragm is attached to a base which is fixed within a cover and a pressure receiving space in which an oil is sealed is formed. A semiconductor type pressure detecting device is connected to a plurality of terminal pins by a bonding wire. A neutralization plate attached to a periphery of the semiconductor type pressure detecting device or a part of the periphery thereof is connected to an earth terminal pin by an earth bonding wire, or is connected to the earth terminal pin by a soldering so as to prevent an insulative medium sealed within the pressure receiving space from being electrically charged.