Solder housed in flow tank 20 is ejected from nozzle 22 by a pump provided inside flow tank 20. Jet motor 26 that drives the pump is provided outside flow tank 20, and cooling device 30 is provided between flow tank 20 and jet motor 26. Cooling device 30 includes cooling pipe 52 that is formed folded back on itself. Nitrogen gas is supplied from an upper end of cooling pipe 52, flows along cooling pipe 52, and flows out of a lower end of cooling pipe 52 so as to be supplied to flow tank 20. The temperature of the nitrogen gas increases due to heat dissipated from jet motor 26, thus lowering the temperature of jet motor 26. Heat is transferred from jet motor 26 to the nitrogen gas, and jet motor 26 is cooled satisfactorily.

A method of manufacturing a printed circuit board assembly includes providing a circuit board, positioning a plurality of components including at least one thermally-sensitive component having a maximum temperature threshold on the circuit board, positioning a customized protective heat shield on the thermally-sensitive component, exposing the circuit board (having the thermally-sensitive component disposed thereon and the customized protective heat shield disposed on the thermally-sensitive component) to a high-temperature environment wherein temperatures exceed the maximum temperature threshold of the thermally-sensitive component, and removing the customized protective heat shield from the thermally-sensitive component. Customized protective heat shields are also provided.

A method of manufacturing a pallet for use during manufacture of a printed circuit board assembly includes determining optimal solder flow for establishing connections between lead pins of a plurality of pin-through-hole components arranged on a circuit board, designing a pallet to include geometries configured to provide the optimal solder flow when the pallet, supporting the circuit board thereon, is passed through a wave solder machine, and creating the pallet based on the design. Pallets configured for optimal solder flow and methods of manufacturing printed circuit board assemblies using such pallet are also provided.

A wave soldering machine includes a housing and a conveyor coupled to the housing. The conveyor is configured to deliver a printed circuit board through the housing. The wave soldering machine further includes a wave soldering station coupled to the housing. The wave soldering station includes a reservoir of solder material, and an adjustable wave solder nozzle assembly adapted to create a solder wave. The adjustable wave solder nozzle assembly has a first curve plate and a second curve plate that together define a nozzle. The second curve plate is movable with respect to the first curve plate between a close proximate position in which the second curve plate is proximate the first curve plate and a spaced apart position in which the second curve plate is spaced from the first curve plate to adjust a width of the nozzle.

The embodiments of disclosure disclose a welding tray, which includes a tray frame (18) and a supporting device (16), wherein the supporting device (16) includes a supporting component and an adjustable connecting component, the supporting component includes a supporting surface, the adjustable connecting component connects the supporting component to a side edge of the tray frame (18), and a distance between the supporting surface and a bearing surface of the tray frame (18) is adjustable.

Improved electrical and thermal properties of solder alloys are achieved by the use of micro-additives in solder alloys to engineer the electrical and thermal properties of the solder alloys and the properties of the reaction layers between the solder and the metal surfaces. The electrical and thermal conductivity of alloys and that of the reaction layers between the solder and the -metal surfaces can be controlled over a wide range of temperatures. The solder alloys produce stable microstructures wherein such stable microstructures of these alloys do not exhibit significant changes when exposed to changes in temperature, compared to traditional interconnect materials.

A soldering device, particularly solder pots for selective wave soldering or a fluxer device, having a receiving means configured to store a liquid, particularly a solder reservoir, configured to store a solder, particularly a liquid solder, or having a flux tank configured to store flux, with a nozzle, particularly a solder nozzle or fluxer nozzle, and having a pump, particularly a solder pump or a flux pump, configured to deliver the liquid from the receiving means through the nozzle in the direction of a Z-axis.

A solder dross recovery module has gears and a waste collection chamber positioned within a solder pot. The gears are configured to draw in solder dross from a surface of molten solder stored in the solder pot. The gears apply pressure to the solder dross so as to separate solder from the solder dross. The recovered solder is returned to the molten solder in the solder pot. A resulting waste material is collected in the waste collection chamber.

Clips are provided to secure optic element systems to a printed circuit board. Associated mounting systems may, for example, eliminate direct adhesion of an optic element to an associated illumination source (e.g., LED). Thereby, thermal management of the system may be improved, adding flexibility in, for example, mounting height and tilt of an optic element. Thus, manufacturing cost, associated with mounting optic elements to L.E.D. arrays, may be reduced. Associated mounting systems may enable a direct electrical connection from a printed circuit to, for example, optical path control elements embedded within an optic element using, for example, various electro-optical control technologies.

Provided is a jet nozzle that varies a width of a flow of jetted molten solder. The jet nozzle contains a nozzle main body having a channel section at its part and a molten solder flow width varying member that varies a width of the upper opening end of the nozzle main body by a slide of the molten solder flow width varying member within the channel section of the nozzle main body to vary a width of the molten solder flow jetted from the upper opening end of the nozzle main body. The molten solder flow width varying member includes a molten solder flow width varying plate that varies the width of the molten solder flow, a rectangular rectifying piece that extends along a slide direction of the molten solder flow width varying member, and a sliding shaft that slides the rectifying piece.