InGaAs photodiode array EXACTD-362

Product overview The Excelitas EXACTD® platform is developed for Laser Warning Receiver (LWR) systems to detect and deliver precise angle-of-arrival (AoA) information from direct and scattered laser emissions originating from rangefinders, target designators and active electro-optic systems. The compact TO-8 module integrates Si and InGaAs detector arrays to extend spectral coverage while providing encoded AoA output suitable for airborne and defense sensor integration.

Key details The EXACTD-362 uses a 6-bit Gray code to encode incident AoA, achieving an angular resolution of ±0.8° in either azimuth or elevation depending on module orientation, across a ±45° field of view. Combined Si and InGaAs detectors yield a spectral sensitivity from 500 to 1650 nm in a TO-8 package with separate low- and high-sensitivity channels for wide dynamic range.

Features & Benefits

• Spectral sensitivity range: 500–1650 nm (Si + InGaAs)
• 6-bit Gray code encoding for ±0.8° AoA accuracy in azimuth or elevation
• Field of view (FOV): ±45° for azimuth and elevation
• Low- and high-sensitivity channels to cover wide dynamic range
• Three reference channels per array for baseline signal monitoring

Applications Intended for Laser Warning Receiver systems and other electro-optic sensor assemblies requiring high-precision AoA data from laser rangefinders, target designators and active EO systems; suited for integration in airborne, naval and ground defense sensor suites.

Technical specifications

• Wavelength range (nm): 500 to 1650
• Bias voltage (V): 12
• Typical responsivity (A/W): 0.2 at 500 nm
• Typical responsivity (A/W): 0.4 at 900 nm
• Typical responsivity (A/W): 0.5 at 1064 nm
• Typical responsivity (A/W): 0.7 at 1540 nm
• Maximal dark current per element (nA): 20
• Noise current per element (pA/√Hz): 0.5
• Typical capacitance per element (pF): 12
• Typical rise and fall time (ns): 5
• Dynamic range (dB): 60
• Field of view (°): ±45
• Typical Angle-of-Arrival (AoA) accuracy (RMS error) (°): 0.8
• Maximal pointing error (°): 1.0
• Case operating temperature (°C): -40 to 85
• Typical maximal incident power (kW/cm²): 1.2
• Minimal damage threshold (kW/cm²): 100