摘要:
A semiconductor device includes: a semiconductor substrate; a lateral MOS transistor disposed in the substrate; a Zener diode disposed in the substrate; and a capacitor disposed in the substrate. The transistor includes a drain and a gate, and the diode and the capacitor are coupled in series between the drain and the gate. This device has minimized dimensions and high switching speed. Further, both of a switching loss and a surge voltage are improved.
摘要:
A semiconductor device includes: two main electrodes; multiple first regions; and multiple second regions. The first region having a first impurity concentration and a first width and the second region having a second impurity concentration and a second width are alternately repeated. A product of the first impurity concentration and the first width is equal to a product of the second impurity concentration and the second width. The first width is equal to or smaller than 4.5 μm. The first impurity concentration is lower than a predetermined concentration satisfying a RESURF condition. A ratio between on-state resistances of the device at 27° C. and at 150° C. is smaller than 1.8.
摘要:
A semiconductor device includes a body region, a drift region having a first part and a second part, and a trench gate electrode. The body region is disposed on the drift region. The first and second parts extend in an extending direction so that the second part is adjacent to the first part. The trench gate electrode penetrates the body region and reaches the drift region so that the trench gate electrode faces the body region and the drift region through an insulation layer. The trench gate electrode extends in a direction crossing with the extending direction of the first and second parts. The first part includes a portion near the trench gate electrode, which has an impurity concentration equal to or lower than that of the body region.
摘要:
A semiconductor device includes: a cell region; a terminal region; a lower semiconductor layer; a intermediate semiconductor layer on the lower semiconductor layer including a super junction structure; a terminal upper semiconductor layer on the intermediate semiconductor layer; a terminal contact semiconductor region on a surface portion of the terminal upper semiconductor layer adjacent to the cell region; an insulation layer on the terminal upper semiconductor layer having a first part adjacent to the cell region with a small thickness and a second part adjacent to the first part with a large thickness; and a conductive layer in the cell region and a part of the terminal region, the conductive layer extending from the cell region to the part of the terminal region beyond the first part of the insulation layer.
摘要:
A semiconductor device manufacturing method comprises forming a pn column so that the pn column is designed to have a strip form in the section of the substrate and have a repetitive pattern of a p-conduction type and an n-conduction type on the substrate surface over an area where plural semiconductor devices having the same structure are formed in a semiconductor substrate, forming residual constituent elements of the plural semiconductor devices having the same structure in areas where the repetitive patterns are located while the pn column serves as a part of the constituent element of each semiconductor device, and dicing the individual semiconductor devices into chips from the area where the plural semiconductor devices having the same structure are formed.
摘要:
A method for monitoring a mounting tact of a component mounting apparatus including a component supplier for supplying a component and a component holder for holding the component from the component supplying device and mounting the component onto a circuit board. The method includes collecting and monitoring a mounting tact result value of the component mounting apparatus during a mounting operation via a communication system. The method further includes calculating a tact loss corresponding to an amount by which the mounting tact result value is greater than a standard mounting tact and monitoring the calculated tact loss.
摘要:
The present invention provides a device and a method for determining whether or not component holder is good, which enable detecting component holders that are to affect correct component recognition and further enable preventing interferences between constituent devices, a component mounting apparatus with the determining device, and a component mounting method. The determining device has an illuminating device, a CCD camera and a controller to determine whether or not a suction nozzle is good based on a luminance at a component hold face of the suction nozzle. The suction nozzle having the light reflectance of the component hold face increased to a level whereat the correct recognition of an electronic component held by the suction nozzle is affected can be detected accordingly. An interference preventing device is also provided, so that the interference between the CCD camera and the suction nozzle can be prevented.
摘要:
An impact sensor includes the first and the second electrodes arranged a predetermined distance away from each other in a tube insulator. The impact sensor is arranged at a front of a vehicle such that the first and the second electrodes opposed to each other in the front-to-rear direction of the vehicle. The first and the second electrodes include cable conductors sheathed with elastically deformable conductive members, respectively. The first and the second electrodes are apart from each other when no impact is applied to the impact sensor. When a collision occurs and the impact is applied to the impact sensor, a contact area between the conductive members increases and a resistance between the first and the second electrodes continuously decreases.
摘要:
First and second outlet ports are connected to an inlet port. A first valve member selectively blocks and unblocks the first outlet port. A second valve member selectively blocks and unblocks the second outlet port. A first device urges the first valve member. A second device urges the second valve member. A movable member disposed between the first and second valve members allows a force of the first urging device to travel to the second valve member. The movable member can be driven by a solenoid winding. When the solenoid winding is deenergized, the first valve member is moved to its open position by the first urging device and the second valve member is moved against a force of the second urging device to its open position by the first urging device. When the solenoid winding is energized, the first valve member is moved against the force of the first urging device to its closed position by the movable member and the second valve member is moved to its closed position by the second urging device.
摘要:
A vehicle includes a power receiving portion that contactlessly receives electric power from a power transmitting portion provided outside the vehicle and includes a shield member that is arranged around the power receiving portion in the same plane as a plane in which the power receiving portion is arranged, wherein the shield member includes a first shield region having a high shielding function and a second shield region having a shielding function lower than that of the first shield region at a position around the power receiving portion.