11 Mar 2019 LASER COMPONENTS is a world leading manufacturer of PbS and PbSe infrared detectors. From our research and production facility in Tempe, Arizona we supply customers all over the world with these industrial grade thermal detectors.
These detectors work on the principle that photons incident on the polycrystalline thin film promote electrons across the bandgap increasing the conductivity of the material in turn decreasing the resistance of the substance. 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 fit and forget applications such as gas sensing, surface inspection and identifying the presence of a flame. The PB55 is a collection of thermo-electrically cooled polycrystalline biased single element PbSe detector with a 20% cut off at 5.2 microns and a maximum element size of 6 x 6 mm2.
More Information https://www.lasercomponents.com/uk/ir-components/ir-detectors/pbs-and-pbse-detectors/ | 
