The Osram 64621 lamp is a 12 volt 100 watt tungsten halogen lamp and is made by Osram-Sylvania. The lamp is 48mm long, with a clear T3 (11.5mm) tube on a PG22 base. Typical lifetime is 2000 hours. The lamp is also known as HLX64621, 64621HLX, 54032, JC12V100W/A PG22, JC12V100W/APG22AI, and other variations. The lamp is available from no other known source. Typical applications are the NovaScan 3090, NovaScan 3060 and Novascan 2040 semiconductor metrology tools.