Industrial XP2012B 03 Photomultiplier Vacuum Tube

Industrial XP2012B 03 photomultiplier vacuum tube from Amperex is a compact, high-sensitivity light detector that converts faint photons into amplified electrical pulses through a sealed vacuum envelope. The XP2012B/03 designation identifies this specific variant, associated with lot code 88-26, and the listing notes it comes with the original box, making it suitable for collectors, restorers, or refurbishment in compatible instrumentation. This device is part of a family of photomultiplier tubes that amplify light signals to produce measurable electrical output when illuminated, commonly used in scientific instrumentation with appropriate high-voltage and readout hardware. The XP2012B family features a compact 32 mm head-on envelope with a multi-stage dynode structure that enables high gain at modest photocurrent levels, making XP2012B tubes a recognizable choice in scientific detectors and analytical instruments. The listing notes 88-26 and the original box, providing provenance and packaging details that may matter for refurbishment, archival projects, or certified resale.