HgCdTe (MCT) Four-Channel Detection Module

3.5 – 6.0 µm, DC – 1 MHz, with photovoltaic four-element linear detector

4EM-5 is „all-in-one” IR multi channel detection module. Thermoelectrically cooled photovoltaic four-element linear detector, based on HgCdTe heterostructure, is integrated with transimpedance, DC coupled four-channel preamplifier, a fan and a thermoelectric cooler controller in a compact housing.

Spectral response (Ta = 20°C)


  • Four channels
  • Low crosstalk
  • Single power supply
  • Compatible with optical accessories

Specification (Ta = 20°C)

Typical value
Optical parameters
Cut-on wavelength λcut-on (10%) µm
Peak wavelength λpeak, µm
Optimum wavelength λopt, µm
Cut-off wavelength λcut-off (10%) µm
Detectivity D*(λpeak), cm⋅Hz1/2/W
Detectivity D*(λopt), cm⋅Hz1/2/W
Output noise density vn(100 kHz), nV/Hz1/2
Electrical parameters
Voltage responsivity Rvpeak, R = 1 MΩ*)), V/W
Voltage responsivity Rvopt, R = 1 MΩ*)), V/W
Low cut-off frequency flo, Hz
High cut-off frequency fhi, Hz ≥1M
Output impedance Rout, Ω 50
Output voltage swing Vout(R = 1 MΩ*)), V 0 – 4
Output voltage offset Voff, V
max ±20
Power supply voltage Vsup, V
Power consumption, W
max 6
Other information
Active elements material
epitaxial HgCdTe heterostructure
Active areas A, mm×mm
Distance between active elements, mm
Acceptance angle, Φ
Ambient operating temperature Ta, °C
10 to 30
Signal output sockets
Power supply socket
DC 2.1/5.5
Mounting hole
*) RL – load resistance

Mechanical layout, mm


Selected Line

Infrared detection module integrates infrared photodetector, signal processing electronics, optics, heat dissipation systems and other components in common package. Products selected on the basis of high functionality and intended for many applications such as leak detection, gas analysis, temperature control for fast moving objects. Additional advantages of integration are improved high-frequency (HF) performance, output signal standardization and miniaturization. Selected Product Line guarantees a short order fulfillment date and an effective price.
Infrared Detection Modules

Configurable Line

A full range of preamplifiers dedicated to each type of VIGO System infrared detectors. The Configurable Line of modules enables the selection of the active area, type of preamplifier and bandwidth of the detection module. This makes it possible to adapt the module to the needs of your own application.
Programmable Thermoelectric cooler controller PTCC-01


We offer all the necessary accessories for our products. Electrical accessories such as thermoelectric cooler controllers and preamp power supplies. Mechanical accessories such as brackets for detectors and infrared modules, base mounting systems and cables dedicated to our products.

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If you need Evaluation Units, please contact us.

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