A printed circuit board assembly includes a main printed circuit board including a first main signal line and a first dielectric having a first permittivity; a sub printed circuit board including a first sub signal line and a second dielectric having a second permittivity smaller than the first permittivity; and a first connection block configured to connect the first main signal line of the main printed circuit board and the first sub signal line of the sub printed circuit board.

A vehicle luminaire includes: a board having a plate shape and including a first surface, a second surface facing the first surface, and at least one coupling portion penetrating between the first surface and the second surface; a light-emitting element provided on the first surface of the board; and a connecting portion having a plate shape, including a convex portion provided inside each coupling portion on one end portion side, and extending in a direction from the first surface toward the second surface. A tip portion of the convex portion may protrude from the first surface of the board. A distance between the tip portion of the convex portion and the first surface of the board may be larger than a distance between a light-emitting surface of the light-emitting element and the first surface of the board.

A battery assembly for an electronic vaporization device includes: a first circuit board for controlling operation of the electronic vaporization device; a second circuit board, stacked with the first circuit board, an orthographic projection of the second circuit board on the first circuit board not exceeding a maximum distance of the first circuit board in a length direction or a width direction; and a plurality of light emitting elements arranged on a surface of the second circuit board away from the first circuit board.

A light-emitting module includes a first mounting board having a first surface and a second surface opposite to the first surface. The first mounting board has a recess on the first surface, and the recess has a bottom surface. The first mounting board has an opening passing through the first mounting board from the bottom surface to the second surface. The light-emitting module further includes a second mounting board provided in the recess, a light-emitting element provided on the second mounting board and configured to emit light through the opening, and an elastic cushion provided between the first mounting board and the second mounting board. The light-emitting module also includes a connector. The connector and the opening sandwich a center of the first mounting board when viewed from a direction from the second surface to the first surface.

A Printed Circuit Board (PCB), a method for manufacturing a PCB, and a terminal are provided. The PCB includes: a PCB daughter board which is a Radio Frequency (RF) PCB; and a PCB mother board with a hollow slot, wherein the PCB daughter board is embedded in the hollow slot.

There is provided a printed circuit board in which an amount of molten solder adhering over electrodes adjacent to each other is increased in flow soldering. The printed circuit board according to the present invention includes: a first insulating substrate (6) having a mounting hole (15) that penetrates through the first insulating substrate (6) from a first surface (6a) to a second surface (6b); a second insulating substrate (18) including a connection portion (23a) that penetrates through the mounting hole (15) from the first surface (6a) side and protrudes from the second surface (6b); first electrodes (7 and 9) that are provided on the second surface (6b) and are arranged at an edge of the mounting hole (15); and second electrodes (19 and 25) provided on the connection portion (23a). The first electrodes (7 and 9) and the second electrodes (19 and 25) are joined by solder. The printed circuit board further includes a coating film (31) that is disposed at least on a front end side of the connection portion (23a) than a portion where the second electrodes (19 and 25) are joined to the first electrodes (7 and 9) by the solder.

A flexible electronic foil (1,1′,1″) comprising a flexible substrate (2) and at least one electrically conducive portion (3) arranged to the substrate (2). The foil (1,1′,1″) comprises mechanical fastening means (6,6′,7) for mechanical fastening of the electronic foil (1,1′,1″), the mechanical fastening means being part of the substrate (2) of the electronic foil (1,1′,1″).

The present disclosure provides a power supply module used in a smart terminal and a power supply module assembly structure, the power supply module includes a substrate having first and second surfaces opposite to each other; a power passive element, an active element and a plurality of first conductive parts disposed at the substrate; the power passive element being independently disposed on the first surface of the substrate as a whole; wherein a maximum height of the power passive element disposed on the first surface of the substrate is greater than a sum of a maximum height of an element disposed on the second surface of the substrate and an half of the thickness of the substrate.

A light-emitting module includes a first mounting board which has a first surface, a second surface opposite to the first surface, and a recess on the first surface. An opening passes through the first mounting board from a bottom surface of the recess to the second surface. A second mounting board has a mounting surface and a light-emitting element surface opposite to the mounting surface and is provided in the recess such that the light-emitting element surface faces the bottom surface of the recess. A light-emitting element is provided on the light-emitting element surface and configured to emit light through the opening. An elastic cushion is provided between the bottom surface and the light-emitting element surface. The second mounting board projects from the first surface of the first mounting board when a force pressing the second mounting board toward the bottom surface of the recess is not applied.

A power converter includes a power transformer having a body housing two secondary windings, the body having first and second opposing and substantially parallel planar faces, each of the secondary windings having respective first coils and second coils having respective terminals. The terminals of the first coils extend through the first face of the transformer body, and the terminals of the second coils extend through the second face of the transformer body. The converter further includes two printed circuit boards (PCBs) each disposed at a corresponding face of the transformer body, each PCB carrying switches and capacitors of a respective rectifier circuit connected to the terminals of the coils of the respective secondary winding, each PCB including external connections for connecting the rectifier circuits in parallel to form an output of the power converter.