Planar CT.

Royma's Planar CT systems separate the layers of flat parts that a 2D X-ray image overlays: printed circuit boards, connectors, flat assemblies and flat mouldings. The source and detector move in a plane relative to the part, and the reconstruction returns a stack of slices through the board, so a solder joint under a BGA, a through-hole fill or a back-drill stub is measured on its own layer without cutting the board.

The RMX3000 tilts source and detector by ± 70° and adds 360° rotation, so a joint is seen from the side in 2D or reconstructed in 3D at 1.5 µm spatial resolution, in the line, for samples up to 510 × 510 mm. The RMPCT5500 scans complete boards up to 760 × 660 mm in 2D, 2.5D and 3D planar CT, more than 300 slices per scan, a field of view in 2 seconds at its fastest setting, with automatic measurement and a pass or fail result programmed from the CAD data.

Choose Planar CT when the part is flat and the question lies between its layers, and when the inspection runs in the line or at the line with automatic evaluation. For small, thick or dense parts, a Horizontal CT system with full rotation gives the better volume.