A system for suppressing radiofrequency noise includes a modem and an energy transfer device. The modem includes a coaxial radiofrequency port that is configured to connect to a first ground. The energy transfer device includes a first portion and a second portion. The first portion is configured to connect to the coaxial radiofrequency port and the first ground. The second portion is configured to connect to a second ground that is isolated from the first ground. The first and second portions are configured to transfer electrical energy therebetween via electromagnetic coupling.

An electronic component includes an element body and an external electrode disposed on the element body. The external electrode includes an underlying metal layer, a conductive resin layer, and a plating layer. The underlying metal layer is disposed on the element body. The conductive resin layer contains a plurality of conductive fillers and is disposed on the underlying metal layer. The plating layer is disposed on the conductive resin layer. A part of the plurality of conductive fillers is sintered with the underlying metal layer and is coupled to the underlying metal layer. Another part of the plurality of conductive fillers is exposed to a surface of the conductive resin layer and is in contact with the plating layer.

A complex electronic component includes: an element part and an electrostatic discharge (ESD) protection part disposed on the element part. The ESD protection part includes: first and second discharging electrodes having a gap disposed therebetween; a blocking layer disposed between the first and second discharging electrodes; and a discharging layer which is disposed to cover an upper portion of the blocking layer and is in contact with top surfaces of the first and second discharging electrodes.

An electronic component includes a multilayer body constituted by insulator layers that are laminated in a laminating direction, a primary coil including one or more primary coil conductor layers, a secondary coil including one or more secondary coil conductor layers, and a tertiary coil including one or more tertiary coil conductor layers. The primary coil conductor layers, the secondary coil conductor layers, and the tertiary coil conductor layers are arrayed in the laminating direction. The primary coil, the secondary coil, and tertiary coil constitute a common mode filter, and intervals between two among the one or more primary coil conductor layers, the one or more secondary coil conductor layers, and the one or more tertiary coil conductor layers, every two of those being adjacent to each other in the laminating direction, are not even.

An integrated transformer and an electronic device are disclosed. The integrated transformer includes at least one first base plate and at least one second base plate. Each of the first and second base plate defines multiple annular accommodating grooves. The annular accommodating grooves divide each of the first and second base plate into multiple central parts and a peripheral part Each central part defines multiple inner via holes there through. The peripheral part defines multiple outer via holes there through. The integrated transformer further includes multiple magnetic cores disposed in the respective annular accommodating groove and transmission wires disposed on both sides of the first and second base plates. Transformers and the filters are arranged on two base plates respectively, and the thickness of the transmission wire layers of the filters is less than that of the transformers. Thus, the structure of the electromagnetic device may be more compact

An electronic component capable of obtaining higher attenuation characteristics. The electronic component includes a substrate, a first inductor and a second inductor disposed on a main surface of the substrate, and a transmission line provided on the substrate and connecting the first inductor and the second inductor in series. A first central axis of the first inductor and a second central axis of the second inductor are parallel to a main surface of the substrate and are not located on the same linear line when viewed from a direction orthogonal to the main surface of the substrate. The first inductor and the second inductor are arranged at a distance for magnetic coupling.

Disclosed herein is a differential mode filter including a core including a winding core part, a first wire wound around the winding core part in a first winding direction, and a second wire wound around the winding core part in a second winding direction opposite to the first winding direction. The winding core part includes first and second winding surfaces. A first crossing angle between the first and second wires that cross a plurality of times on the first winding surface is smaller than that a second crossing angle between the first and second wires that cross a plurality of times on the second winding surface.

A common mode filter includes: a body including a filter portion; first and second external electrodes each including an electrode layer including conductive particles, intermetallic compound (IMC) formation particles, and a resin, and disposed on an external surface of the body; and first and second coils disposed in the filter portion, the first and second coils being connected through lead portions to the electrode layers of the first and second external electrodes, respectively. The conductive particles include a first conductive particle and a second conductive particle having a diameter smaller than that of the first conductive particle.

The present invention concerns a line filter (1), which is configured to be installed onto a system cable (2), wherein the line filter (1) comprises a magnetic component (4), wherein the line filter (1) defines a cable path (6) through the line filter (1), wherein the line filter (1) is configured to allow a placement of the system cable (2) along the cable path (6) at the time of an installation, thereby providing a magnetic coupling of the system cable (2) to the magnetic component (4), and wherein the line filter (1) comprises an insulation displacement connector (16) and a shunt component (5) wherein the insulation displacement connector (16) is configured to be tightened at the time of the installation, thereby providing a galvanic connection of the system cable (2) to the shunt component (5). Further, the present invention concerns a method of installing a line filter (1) onto a system cable (2).

Aspects of the invention provide for an electrostatic protection device for protecting an input port of an electronic circuit. The electrostatic protection device includes a stacked coil assembly with four ports. The electrostatic protection device further includes a human body model ESD protection circuit, a charge device model ESD protection circuit, and an impedance matching circuit. The human body model ESD protection circuit, the charge device model ESD protection circuit, and the impedance matching circuit are connected to separate ports selected from the four ports.