A wiring board includes an electrical isolator laterally surrounded by a base board and a molding compound. The electrical isolator is inserted into a through opening of the base board and has a thickness greater than that of the base board. The molding compound covers the top side of the base board and sidewalls of the electrical isolator, and provides a reliable interface for deposition of a routing circuitry thereon. The base board can serve as an alignment guide for isolator placement or/and provide another routing to enhance electrical routing flexibility for the wiring board.

Example human-machine interface (HMI) assemblies are disclosed. One example HMI assembly includes a fascia, a touch film having a first raised contact, a PCB having a second raised contact, and a piercing member passing through the first and second contacts to electrically couple the first and second contacts.

An electronic device includes a flexible substrate, an anisotropic conductive film, and an electronic element. The flexible substrate includes an active area, a bonding pad, and a plurality of protrusions located on the bonding pad. The anisotropic conductive film includes a plurality of conductive particles. The conductive particles are in contact with the protrusions. The anisotropic conductive film is located between the bonding pad of the flexible substrate and the electronic element.

An electronic component package includes a substrate having an upper surface. Traces on the upper surface of the substrate extend in a longitudinal direction. The traces have a first latitudinal width in a latitudinal direction, the latitudinal direction being perpendicular to the longitudinal direction. Rectangular copper pillars are attached to bond pads of an electronic component, the copper pillars having a longitudinal length and a latitudinal second width. The latitudinal second width of the copper pillars is equal to and aligned with the first latitudinal width of the traces. Further, the longitudinal length of the copper pillars is parallel with the longitudinal direction of the trace and equal to the length of the bond pads. The copper pillars are mounted to the traces with solder joints.

Techniques for creating a low pass filter associated with a flux line are presented. A qubit device can comprise a first substrate and second substrate. A low pass filter, comprising at least one inductor and at least one capacitor can be formed, wherein respective components of or associated with the low pass filter can be formed on the first or second substrates, and wherein one or more bump bonds can extend between the substrates to connect respective components that are on respective substrates. The filter can receive an input signal via an input line and filter the signal to produce a filtered signal as output to a flux line that is in proximity to a coupler with SQUID loop and one or more flux-tunable qubits that are formed on one of the substrates. The filter can reduce electrical noise and Purcell decay associated with the flux line.

A printed circuit board includes a substrate including an external connection pad; and a metal post extending to the outside of the substrate in a thickness direction of the substrate from the external connection pad. The metal post may include a first post portion, elongated while having a substantially constant width, a second post portion extending to the outside of the substrate in the thickness direction of the substrate while having a narrow width, and a third post portion extending to the outside of the substrate in the thickness direction of the substrate from the second post portion while having substantially the same width as the first post portion. The third post portion may forma lower end portion of the metal post.

Certain aspects of the present disclosure generally relate to a circuit board with ground vias offset from associated ground bumps. One example circuit board generally includes a first signal connection terminal configured to connect a signal line of the circuit board to an integrated circuit (IC); a ground plane having a first ground connection terminal disposed adjacent to the first signal connection terminal, the first ground connection terminal being configured to provide a ground connection between the ground plane and the IC; and a first ground via associated with and disposed adjacent to the first ground connection terminal and coupled to the ground plane, wherein, from an overhead view of the circuit board, the first ground via is located at a position that is offset from a first axis on which the first signal connection terminal and the first ground connection terminal are disposed.

A printed circuit board includes a first insulating layer; a pad disposed on the insulating layer and having a protrusion; and a protective layer disposed on the insulating layer and having an opening exposing at least a portion of the pad. The protrusion protrudes from one surface of the pad and is buried in at least one of the insulating layer and the protective layer.

Electrical input devices, conductive traces, and microcontroller interface devices can be created in a single print using a multi-material 3D printing process. The devices can include a non-conductive material portion and a conductive material portion. The non-conductive and conductive material portions are integrally formed during a single 3D printing process. For example, a fully functional QWERTY keyboard, ready to receive a microcontroller, can be multi-material 3D printed using the techniques described herein.

A printed circuit board includes a substrate including an external connection pad; and a metal post extending to the outside of the substrate in a thickness direction of the substrate from the external connection pad. The metal post may include a first post portion, elongated while having a substantially constant width, a second post portion extending to the outside of the substrate in the thickness direction of the substrate while having a narrow width, and a third post portion extending to the outside of the substrate in the thickness direction of the substrate from the second post portion while having substantially the same width as the first post portion. The third post portion may forma lower end portion of the metal post.