PRICE: $5.60

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.
PRICE: $17.80

The Osram EKE is a 21 volt (21V) 150 watt (150W) halogen Microscopy Lamp with a focusing MR16 dichroic coated reflector.  The ANSI standard lamp has a 200 hour rated life.  The Osram EKE is also known as their part number 51494 and EKE-21V-150W.  Equivalent lamps are also available in excellent quality from GE, Ushio, Philips, Hi-Tech Lamps, Britelite and Phoenix Electric, while many low quality sources are also available.  
PRICE: $5.15

The QIR144V-1200S lamp is a 144 volt (144V) 1200 watt (1200W) tungsten halogen lamp.  The lamp is 224mm long, with a clear T3 (10mm) tube an bare nickel stranded lead wires at each end a 2500K color temperature and is made in Japan.  Typical lifetime is 5000 hours. The lamp is also known as QIH144-1200/S, QIH144V-1200/S, 1001300, QIR144V-1200/S, IRK144V1200W/G QH1200T3/CL/HT, 22531 and other variations.  The lamp is available from several sources including Ushio, Osram, GE, Philips, and many others.  Typical applications are the CHA semiconductor thermal processing tools. Ring terminals can be added at special request. 
PRICE: $9.75