摘要:
In order to provide an electronic component of a high frequency current suppression type, which can completely suppress a high frequency current to prevent an electromagnetic interference from occurring even when it is used at a high frequency, and a bonding wire for the same, the semiconductor integrated circuit device (IC) (17) operates at a high speed in using at a high frequency band, and a predetermined number of terminals (19) are provided with a high frequency current suppressor (21) for attenuating a high frequency current passing through the terminals themselves. This high frequency current suppressor (21) is a thin film magnetic substance having a range from 0.3 to 20 (nullm) in thickness, and is disposed on the entire surface of each terminal (19), covering a mounting portion to be mounted on a printed wiring circuit board (23) for mounting IC (17) and an edge including a connecting portion to a conductive pattern (25) disposed on the printed wiring circuit board (23). When the top end is connected with the conductive pattern (25) by means of a solder (27) in mounting the printed wiring circuit board (23) of IC (17), the vicinity of the mounting portion has conductivity in a using frequency band, which is less than a few tens MHz.
摘要:
A cryogenic electronic package includes a first superconducting multi-chip module (SMCM), a superconducting interposer, a second SMCM and a superconducting semiconductor structure. The interposer is disposed over and coupled to the first SMCM, the second SMCM is disposed over and coupled to the interposer, and the superconducting semiconductor structure is disposed over and coupled to the second SMCM. The second SMCM and the superconducting semiconductor structure are electrically coupled to the first SMCM through the interposer. A method of fabricating a cryogenic electronic package is also provided.
摘要:
In order to provide an electronic component of a high frequency current suppression type, which can completely suppress a high frequency current to prevent an electromagnetic interference from occurring even when it is used at a high frequency, and a bonding wire for the same, the semiconductor integrated circuit device (IC) (17) operates at a high speed in using at a high frequency band, and a predetermined number of terminals (19) are provided with a high frequency current suppressor (21) for attenuating a high frequency current passing through the terminals themselves. This high frequency current suppressor (21) is a thin film magnetic substance having a range from 0.3 to 20 (nullm) in thickness, and is disposed on the entire surface of each terminal (19), covering a mounting portion to be mounted on a printed wiring circuit board (23) for mounting IC (17) and an edge including a connecting portion to a conductive pattern (25) disposed on the printed wiring circuit board (23). When the top end is connected with the conductive pattern (25) by means of a solder (27) in mounting the printed wiring circuit board (23) of IC (17), the vicinity of the mounting portion has conductivity in a using frequency band, which is less than a few tens MHz.
摘要:
An electrical connection between first and second members of superconductive material, such as niobium, is made by coating each member with an indium-lead-tin alloy solder. Each member is coated by initially applying a layer of either an indium-lead alloy or indium to a surface of the member. Then the surface is mechanically worked to break up any oxide coating that is underneath the applied layer. Next a lead-tin alloy or tin is alloyed with the applied layer to form a resultant surface layer of a indium-lead-tin alloy. The first and second members are placed in contact with each other and their respective surface layers of the indium-lead-tin alloy are melted to produce a bond therebetween. A bond form by this method also is described.
摘要:
In order to provide an electronic component of a high frequency current suppression type, which can completely suppress a high frequency current to prevent an electromagnetic interference from occurring even when it is used at a high frequency, and a bonding wire for the same, the semiconductor integrated circuit device (IC) (17) operates at a high speed in using at a high frequency band, and a predetermined number of terminals (19) are provided with a high frequency current suppressor (21) for attenuating a high frequency current passing through the terminals themselves. This high frequency current suppressor (21) is a thin film magnetic substance having a range from 0.3 to 20 (μm) in thickness, and is disposed on the entire surface of each terminal (19), covering a mounting portion to be mounted on a printed wiring circuit board (23) for mounting IC (17) and an edge including a connecting portion to a conductive pattern (25) disposed on the printed wiring circuit board (23). When the top end is connected with the conductive pattern (25) by means of a solder (27) in mounting the printed wiring circuit board (23) of IC (17), the vicinity of the mounting portion has conductivity in a using frequency band, which is less than a few tens MHz.
摘要:
In order to provide an electronic component of a high frequency current suppression type, which can completely suppress a high frequency current to prevent an electromagnetic interference from occurring even when it is used at a high frequency, and a bonding wire for the same, the semiconductor integrated circuit device (IC) (17) operates at a high speed in using at a high frequency band, and a predetermined number of terminals (19) are provided with a high frequency current suppressor (21) for attenuating a high frequency current passing through the terminals themselves. This high frequency current suppressor (21) is a thin film magnetic substance having a range from 0.3 to 20 (&mgr;m) in thickness, and is disposed on the entire surface of each terminal (19), covering a mounting portion to be mounted on a printed wiring circuit board (23) for mounting IC (17) and an edge including a connecting portion to a conductive pattern (25) disposed on the printed wiring circuit board (23). When the top end is connected with the conductive pattern (25) by means of a solder (27) in mounting the printed wiring circuit board (23) of IC (17), the vicinity of the mounting portion has conductivity in a using frequency band, which is less than a few tens MHz.
摘要:
A method of bonding a superconductive ribbon lead to a superconducting bonding pad connected to superconducting circuitry. The thin ribbon is first coated with a fresh layer of the same material from which it is made and then a very thin layer of a noble metal is applied over that fresh layer. The bonding pad is also prepared with a very thin layer of the noble metal. Those coated surfaces are placed in facing contact and ultrasonically bonded.