LIDAR photodiode C30902SH

avalanchesilicon

Product overview
Excelitas C30902SH avalanche photodiodes are high-speed, large-area silicon APDs designed for low-noise, high-responsivity detection. They are optimized for operation in Geiger mode (V_OP > V_BD) for single-photon detection or in linear mode (V_OP < V_BD) with internal gains up to 250, and are intended for optical powers below 1 pW.

High Responsivity, Low Noise Reach-Through SPAD
The C30902SH family delivers very low dark current and low noise for demanding distance and low-light measurements. Devices are suitable for single-photon counting and quantum communication. In Geiger mode, no external amplifier is required and single-photon detection probabilities up to approximately 50% are achievable. Single- or dual-stage thermoelectric cooling options are available for improved performance.

Features

• 0.5 mm Si APD in TO-18 housing
• High quantum efficiency – 84% typical at 800 nm
• Low noise at room temperature
• High responsivity – internal avalanche gains > 250
• Spectral response range – 400 to 1100 nm
• Time response – typically 0.4 ns
• Wide operating temperature range -40°C to +85°C
• Built-in TE-cooler option

Applications

• LiDAR / Time-of-Flight (ToF) measurements
• Quantum communication
• Photon counting
• Optical Time-Domain Reflectometer (OTDR)
• Laser scanning

Technical specifications

• Active Area: 0.2 mm²
• Active Diameter: 0.5 mm
• Breakdown Voltage: typ. 225 V
• Capacitance: typ. 1.5 pF
• Temperature Coefficient: typ. 0.7 V/°C
• Dark Current: 7 nA
• Dark Noise: 0.1 pA/√Hz
• Noise Equivalent Power: 0.74 fW/√Hz
• Typically Responsivity: 135 A/W at 800 nm
• Recommended Gain: 250
• Package: TO-18, flat window