Header for electronic components board in surface mount and through-hole assembly

摘要

A header for connecting electronic components board to a circuit board comprises sidewalls made of unwarpable plastic material and joined together to form a frame. The frame includes metal pins (112), each having an end extending from the frame such that these ends can be soldered to the components board concurrently with the solder attachment of the components to the board. A header for connecting electronic components board to a circuit board comprises (a) sidewalls joined together to form a planar frame around an area the same as the area of the components board; (b) geometric feature in the first surface for aligning the frame to the components board; (c) selected side walls having openings extending from the first to the second surface; and (d) metal pins intended for assembly to the circuit board. The sidewalls are made of plastic material unwarpable at assembly temperatures, and have a thickness sized to tolerate process-induced stresses. The first end of each pin is located in one of the openings, respectively, such that it extends a predetermined length from the first surface. The second end of each pin protrudes from the second surface. An independent claim is also included for a method for assembling a header and an electronic components board comprising (i) providing a header having plastic sidewalls, plastic bumps and metal pins; (ii) placing solder paste on the extending pin ends; (iii) providing an electrically insulating assembly board having metallic terminals interconnected by conductive routing lines and dimples matching the plastic bumps; (iv) aligning the terminals on the bottom surface of the assembly board with the extending pin ends; (v) contacting the bottom board surface with the solder paste; (vi) placing solder paste on the terminals on the top board surface; (vii) providing selected electronic components; (viii) aligning the components with matching terminals on the top board surface; (ix) contacting the components with the solder paste of the matching terminals; (x) increasing the temperature to reflow the solder paste between the pin ends and the bottom terminals, and concurrently between the components and the top terminals; and (xi) cooling the temperature for solidifying the solder, thus completing the assembly.