The SUR500X from Laser Components is an Avalanche Photodiode (APD) that provides unmatched noise and sensitivity performance over the commercially available wavelength from 260 nm to 1000 nm. It is based on a silicon “reach-through” structure with high sensitivity in the DUV/UV wavelength range. The diameter of the active area is 0.5 mm. This APD has a breakdown voltage of 200 V at a dark current of 10 μA. The SUR500X is available in a special, hermetical sealed TO-46 package optimized for the UV wavelength range. It is an ideal solution for fluorescent measurements, analytical equipment, medical, scintillation, and high-speed photometry applications.