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Multiband MID-IR Detection Module4EF-5

InAsSb Four-Channel Detection Module

4EF-5 is a multiband, four-channel infrared detection module. Thermoelectrically cooled photovoltaic multiple junction four-element 2×2 array detector, based on InAsSb heterostructure, is integrated with four-channel transimpedance preamplifier and thermoelectric cooler controller. This module uses four band-pass filters with centre wavelengths: 3.34 µm (CH1), 4.26 µm (CH2), 4.47 µm (CH3) and 4.71 µm (CH4). 4EF-5 is suitable for the detection of common gases.


Integrated TEC controller

Easy assembly

Compatible with optical accessories

Other filters available upon request


Detection of gases: CH4 (methane) C2H6 (ethane) CO2 (carbon dioxide) N2O (nitrous oxide) CO (carbon monoxide)

Flame and fire detection

Combustion process control

Explosives detection

Exhaust fumes analysis

Specification (Ta = 20°C)

Typical value
Channel 1
Channel 2
Channel 3
Channel 4
Optical parameters 
Centre wavelength λCWL, µm
3.34  4.26  4.47  4.71
Filter bandwidth, nm
130±20 180±20 80±20 100±20
Detectivity D* (λcwl), cm*Hz1/2/W
Electrical parameters
Voltage responsivity Rvcwl, Rload = 1 MΩ*)), V/W
Low cut-off frequency flo, Hz
High cut-off frequency fhi, kHz 100  100  100  100
Output impedance Rout, Ω 50 50 50 50
Output voltage swing Vout (Rload = 1 MΩ), V 1  1  1  1
Output voltage offset Voff, mV
max ±20 max ±20 max ±20 max ±20
Detection module power supply voltage Vsup, VDC
TEC controller power supply voltage, V
Power consumption, W
Other information
Active elements material
epitaxial InAsSb heterostructure
Active area of single element A, mm×mm
Active area pitch, mm
Acceptance angle of single element, Φ
~36° ~36° ~36° ~36°
Ambient operating temperature Ta, °C
10 to 30
TEC controller
on board
Input-output socket
WR-MM (female) SMT 690367281676

Spectral response (Ta = 20°C)

Mechanical layout, mm


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Temperature sensor characteristics

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