Features: • Active Diameter (0.5mm to 5mm) • Cutoff Wavelength (1.7μm) • High Shunt Resistance for High Sensitivity • Multiple Lens Selection (Biconvex, Planoconvex, or Ball) • Optical Filters (Neutral Density and Bandpass) • Packages (TO-46, TO-18, TO-5 or TO-8)