BGA Rework Station: Alignment Cameras and Hidden-Joint Inspection

A BGA rework station supports the controlled removal and replacement of a ball grid array component. Depending on the station, its functions may include localized heating, board preheating, component handling, and optical alignment. These functions help technicians manage the replacement process, but they provide different evidence from an inspection of the completed solder joints.

Placement alignment is one part of the result

Some stations use split-vision optics to help align the component's solder-ball pattern with the board pads before placement. This view supports positioning. Once the package is seated and the solder has reflowed, most connections are hidden beneath the component. The earlier alignment image cannot establish the condition of every finished joint.

After cooling, a suitable X-ray view can help assess ball arrangement, bridging, and voiding. The inspection must account for structures on both sides of the board and the direction of the beam. Subtle interface defects may require additional views or another validated method; a regular ball pattern alone does not establish complete wetting or a reliable electrical connection.

X-ray image of a reworked BGA, with the rework status and visible feature confirmed.

Match the record to the question

The thermal profile documents the heating process, optical alignment supports placement, X-ray images describe visible internal structure, and electrical tests assess the covered circuit functions. Keeping these records linked to the same assembly makes a rework decision easier to review. Shenzhen Wahfei Technology Co.,Ltd. provides industrial X-ray inspection equipment for examining hidden structures; its role in this workflow is inspection, while the rework station performs the component replacement.