New optoelectronic devices for the Mid-Infrared spectral range open completely new possibilities for portable sensors creation. Using Mid-infrared LED-PD optopairs allows developing an instrument that is smaller, less expensive and versatile.


This photodiode series cover the long wavelength spectral range up to ~4.7 µm. Ability of operation with no additional cooling enables arranging simple and inexpensive systems for CO2 detection and measuring content of other substances that have absorption bands in this range. Lms43PD-03-CG-R-PA model is characterized with high response achieved due to the special glass covering and with a built-in preamplifier that performs photocurrent amplification and conversion to voltage signal. These specificities facilitate easy and fast arrangement of the measurement system with an IR photodiode.

Main features
Корпус TO-18 with a parabolic reflector, in an aluminum screen
Maximum sensitivity range
3.8-4.2 μm
Cut-off wavelength
4.6-4.7 μm
Dark current (Ur=0,1 V) 1-6 mA
Shunt resistance (Ur=10 mV) 10-50 Ohm
0.8-1.2 A/W
Noise equivalent power (1.5-5)×10-11 W/Hz1/2
Specific detectivity (0.6-2)×109 cm×Hz1/2/W

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