ST60 LCC Detector circuit overlay

ST60 LCC Detector circuit overlay

ST60 LCC Thermopile Detector

ST60 LCC Thermopile Detector

A single-channel silicon-based thermopile in a LCC package for surface mount assembly in a small active area of 0.61mm x 0.61mm. Time constant of 18ms with Nitrogen encapsulation gas. Delivers a very low Temperature Coefficient of Responsivity of -0.04%/°C. This detector has a very short thermal shock response to ambient temperature chang

Excellent for non-contact temperature, and horizon sensor.

Low cost surface mount assembly and small active area size with medium output.


  1. See Standard Windows and Filters (PDF) for list of optical filter options
  2. ST60R LCC version offers a low-cost (20% tolerance) poly-silicon resistor to be used as a PTC thermistor.
  3. Internal 30kΩ 5% NTC chip thermistor provides ambient package temperature measurement. See DC-4005 section of Thermistor Options (PDF).
  4. Internal aperture precisely defines active area for applications with FOV and/or spot size requirements. See Aperture Options (PDF) for available sizes.
  5. See Thermopile Configuration Table for more options.

For more detailed information see the datasheet ST60 LCC (PDF).

Specifications apply at 23°C with KBr Window and Nitrogen encapsulating gas.

Parameter Min Typical Max Symbol Units Comments
Active Area size   .61 x .61   AA mm Hot junction size, per element.
Element Area   .37   A mm2  
Number of Junctions   80       Per element.
Number of Channels   1       Per detector package.
Output Voltage 50 62 74 Vs μV DC,  H=330μW/cm2 (3)
Signal-to-Noise Ratio 1,381 1,981 2,891 SNR √Hz DC, SNR=Vs/Vn
Responsivity 40.7 50.5 60.3 V/W DC, =Vs/HA  (2)
Resistance 40 60 80 R Detector element
Temperature Coefficient of   -.04     %/°C Best linear fit, 0° to 85°C (1)
Temperature Coefficient of  R   .11     %/°C Best fit, 0° to 85°C (1)
Noise Voltage 25.6 31.3 36.2 Vn nV/√Hz Vn2=4kTR
Noise Equivalent Power .42 .62 .89 NEP nW/√Hz DC,  NEP= VnHA/Vs (2)
Detectivity .69 .98 1.44 D* 108√Hz/W DC,  D*=Vs/ VnH√A  (2)
Time Constant   18   Τ ms Chopped, -3dB point (1)
Field of View   45°/81°   FOV Degrees See Assembly Drawings for FOV Description.
Package Type   LCC       Standard package hole size: Ø.069
Operating Temperature -50   100 Ta °C  
ST60R Thermistor Options ~24 30 ~36 RT PTC Poly-Silicon resistor on detector die.
ST60R Thermistor Temperature Coefficient of R .107 .11 .113   %/°C ΔR/(RΔT), Best fit, 0° to 85°C (1)

General Specifications: 
Flat spectral response from 100nm to > 100µm.  Linear signal output from 10-6 to 0.1W/cm2
Maximum incident radiance 0.1W/cm2 , damage threshold ≥ .5W/cm2
(1) Parameter is not 100% tested. 90% of all units meet these specifications.
A is detector area in cm2.
Test Conditions: 500K Blackbody source; Detector active surface 10cm from 0.6513cm Diameter Blackbody Aperture.

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