An IC unit unloading system including a chute and a drawer. The chute has a plurality of channels each arranged to receive a unit. The drawer is arranged to move along the chute and has a gate with a unit contact face proximate a top surface of the chute. The contact face is arranged to draw the units along the respective channel as the drawer moves along the chute, and to allow the units to slide laterally across the contact face from a first pitch of each channel to a second pitch. A method for washing a plurality of PCB units, the method comprising the steps of: receiving a plurality of PCB units, said PCB units arranged with a bump face projecting downwards; washing the bump face of the PCB units, then; flipping the PCB units so as to project the ball face downwards, then; washing the ball face.

The present invention provides a maintenance board that can be used for a maintenance process other than removing static electricity from a component mounting device by being conveyed by a conveyance device of the component mounting device. The maintenance board is conveyed to the conveyance device of the component mounting device. The maintenance board includes at least one of: a brush configured to brush a maintenance target object; a cleaning nozzle configured to be held in an attachable manner to a work head of the component mounting device and to blow air to the maintenance target object; a pressure sensor configured to measure a detachable load of a component to a suction nozzle attached to the work head and a mounting load of a component to a board; and a blower configured to blow air toward the work head.

Compositions and methods for silver plating onto metal surfaces such as PWBs in electronics manufacture to produce a silver plating which is greater than 80 atomic % silver, tarnish resistant, and has good solderability.

A process of fabricating an electromagnetic circuit includes providing a first sheet of dielectric material including a top surface having at least one conductive trace and depositing a solder bump on the at least one conductive trace. The process further includes applying a second sheet of dielectric material to the first sheet of dielectric material with bond film sandwiched in between, the second sheet of dielectric material having a through-hole providing access to the solder bump. The process further includes bonding the first and second dielectric materials to one another and removing bond film resin from the solder bump. The process further includes machining the solder bump by the drilling or milling process to achieve a desired amount of solder in the solder bump.

A process of fabricating an electromagnetic circuit includes providing a first sheet of dielectric material including a top surface having at least one conductive trace and depositing a solder bump on the at least one conductive trace. The process further includes applying a second sheet of dielectric material to the first sheet of dielectric material with bond film sandwiched in between, the second sheet of dielectric material having a through-hole providing access to the solder bump. The process further includes bonding the first and second dielectric materials to one another and removing bond film resin from the solder bump. The process further includes machining the solder bump by the drilling or milling process to achieve a desired amount of solder in the solder bump.

A vertical circuit board printer includes a multi-layer conveyor, a printer assembly, and a control system. The multi-layer conveyor includes a number of front conveyors and one rear conveyor. Each upper front conveyor is coupled to a lower front conveyor by a circuit board-lowering mechanism to transport a number of circuit boards in sequence from the number of front conveyors to the rear conveyor. The printer assembly includes a number of printers arranged in sequence above the number of front conveyors. The control system controls operation of the multi-layer conveyor and controls operation of the printing assembly through a software system.

A process for improving the performance of the sliding rheostat of 5G communication high-frequency signal board with the sliding rheostat slides along between two bonding pads, includes the following steps: outer layer etching; resin plugging: a. plugging the resinous ink into the pre-plugging position; b: baking, baking on the baking plate of the oven after the plugging is finished; board polishing: using a ceramic brush to process the plugged board, then using a non-woven fabric blush to polish the surface that is polished by ceramic brush. The present invention provides a process for improving the performance of the sliding rheostat of 5G communication high-frequency signal board. The resin plugging method is used to plug the gap between the conductors of the sliding rheostat, so as to prevent the sliding rheostat from being unable to slide due to the altitude difference between conductors of the high-frequency signal board.

Deformable electrical contacts with conformable target pads for microelectronic assemblies and other applications are provided. A plurality of deformable electrical contacts on a first substrate may be joined to a plurality of conformable pads on a second substrate during die level or wafer level assembly of microelectronics, for example. Each deformable contact deforms to a degree that is related to the amount of joining pressure between the first substrate and the second substrate. The deformation process also wipes each respective conformable pad with the deformable electrical contact to create a fresh metal-to-metal contact for good conduction. Each conformable pad collapses as pressured by a compressible material to assume the approximate deformed shape of the electrical contact, providing a large conduction surface area, while also compensating for horizontal misalignment. Temperature can be raised to melt a dielectric, which encapsulates the electrical connections, equalizes gaps and variations between the two substrates, and permanently secures the two substrates together.

A method for washing a plurality of PCB units, the method comprising the steps of: receiving a plurality of PCB units, said PCB units arranged with a bump face projecting downwards; washing the bump face of the PCB units, then; flipping the PCB units as to project a ball face downwards, then; washing the ball face.

The invention relates to a soldering device for removing solder pearls and/or solder balls from the lower face of a printed circuit board, in particular a soldering device for a soldering system for a selective wave soldering process, comprising a brush device for removing solder pearls and/or solder balls from the lower face of a printed circuit board. The brush device has a brush which can be driven about a drive axis and which is designed to remove the solder pearls and/or solder balls, wherein a moving device is provided, said brush device being arranged on the moving device such that the brush device can be moved relative to the printed circuit board in the direction of an X, Y, and Z axis.