The Polycrystalline lead sulphide (PbS) units detect radiation in the wavelength range between 1 and 3.3 microns and exhibit a higher sensitivity than Polycrystalline lead selenide (PbSe) which can detect radiation between 1 and 5.2 microns.
The devices are manufactured in standard TO style packages and have long expected lifetimes making them ideal for fi t and forget applications such as gas sensing, surface inspection and identifying the presence of a flame.
The PB27 is a collection of thermo-electrically cooled Polycrystalline biased single element PbS detectors with a 20% cut off at 3.3 microns and a maximum element size of 3x3mm2.