The TT Electronics/Optek Technology phototransistor is an optical sensor designed for use in a variety of electronic devices and systems. It comes in a coaxial, metal can package with a bulk mounting type. The power - max is 100 mW, and the wavelength is 935nm. The operating temperature range is from -55°C to 125°C, and the base product number is OP516. This product is an active status product, and it is perfect for use in a variety of electronic devices and systems that require reliable and efficient optical sensing.