Japan Hamamatsu Sealed X-ray Tube L9181-05 with 5 μm Focal Spot Size Japan Hamamatsu Closed Type X-ray Tube L9181-05 with 5 μm Focal Spot Size for PCB, battery and electronic components inspection Key Features Focal Spot Size: 5 μm (at 4 W) - The focal spot of 5 μm of the sealed type X-ray tube offers sharp and clear X-ray images even at high magnification Connection: No high voltage cable required - High voltage power supply is integrated Control Interface: External control