Opto Diode (part of Illinois Tool Works, Inc.) designs and manufactures high-quality standard and custom silicon (Si) photodiodes, LEDs, IR LEDs, and LED arrays, Ultraviolet (UV)/Extreme UV/Absolute X-Ray photodetectors, opto-electronic assemblies, and custom solutions. Their custom solutions include line sources, point sources, custom geometry photodiodes, and custom packaging. Comprehensive testing of chips, wavelengths, and output power is also available. With a domestic in-house manufacturing facility and state-of-the-art wafer fab they are able to provide economical, high-quality products in low to high volume quantities.