C30921SH Datasheet | Excelitas

Features - High quantum efficiency: 77% typical at 830 nm - C30902SH and C30921SH can be operated in Geiger mode - C30902EH/SH-2 version with built-in 905 nm filter - C30902BH version with ball-lens - Hermetically sealed package - Low Noise at room temperature - High responsivity - internal avalanche gains in excess of 150 - Spectral response range - (10% Q.E. points) 400 to 1000 nm - Time response - typically 0.5 ns - Wide operating temperature range -40°C to +70°C - Ro HS pliant Applications - LIDAR - Range finding - Small-signal fluorescence - Photon counting - Bar code scanning Both C30902SH and C30921SH are selected C30902EH and C30921EH photodiodes having extremely low noise and bulk dark-current. They are intended for ultra-low light level applications (optical power less than 1 p W) and can be used in either their normal linear mode (Vr < Vbr) at gains up to 250 or greater, or as photon counters in the “Geiger” mode (Vr > Vbr) where a single photoelectron may trigger an avalanche pulse of about 108 carriers. In this mode, no amplifiers are necessary and single-photon detection probabilities of up to approximately 50% are possible. Photon-counting is also advantageous where gating and coincidence techniques are employed for signal retrieval. .excelitas. C30902 and C30921 Series High-speed solid state detectors for low light level applications Table 1. Electro-optical Characteristics Test conditions: Case temperature = 22˚C, unless otherwise specification, see notes on next page. Detector Type Parameter Photosensitive area active diameter active area Lightpipe characteristics (C30921) Numerical aperture of light pipe Index of...