Patent ID: 6592018
Filing Date: 2003-07-15
Classification: H05K

Abstract:
A method for assembling an electrical device having a printed circuit board (110), the printed circuit board (110) having a first side (110A) and a second side (110A) and being provided with slots (412) for receiving conducting legs (414) of at least one electrical component (108), the method including the steps of:a) masking an area (202,204) of the second side (110B) of the printed circuit board (110) with a solder-repellent mask, the masked area (202,204) comprising a first portion (204) and a second portion (202); b) disposing said at least one electrical component (108) on the first side (110A) of the printed circuit board (110) with the conducting legs (414) extending through the slots (412) from the first side (110A) to the second side (110B); c) fixing said at least one electrical component (108) in place by exposing the second side (110B) to solder (410) and allowing the solder (410) to solidify; the method characterised by further including:d) removing the solder-repellent mask from the first portion (204) to expose at least one contact (408) while leaving the solder-repellent mask in place over the second portion (202); and e) disposing a further electrical component (300) directly against the second side (110B), a lower surface of the further electrical component (300) lying adjacent to the second side (110B), the second portion (202) corresponding to at least those points of the masked area (202,204) at which the lower surface of the further electrical component (300) touch the masked area (202,204), the second portion (202) thereby forming a seal between the further electrical component (300) and the second side (110B) of the printed circuit board (110).