1SC Compensated

1SC Compensated Detector

1SC Compensated Detector

1SC Compensated Thermopile

1SC Compensated Thermopile

A thin film-based single channel thermopile detector that offers thermal compensation to minimize effects of sudden ambient temperature change during the initial five seconds of change. The 1SC Compensated comes in a TO-5 package with a medium sized 1.0 x 1.0mm active area. Compensation is achieved through the integration of two additional half-sized thermopile elements. Internal aperture is standard and precisely defines active area for applications with FOV and/or spot size requirements.

Excellent for non-contact temperature measurement.

Thermal compensation with increase in noise and a time constant of 48ms in Argon encapsulation gas.


  1. See Standard Windows and Filters (PDF) for list of optical filter options
  2. See Thermopile Configuration Table for more options.

For more detailed information see the datasheet 1SC (PDF).

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

Parameter Min Typical Max Symbol Units Comments
Active Area size
1 x 1   AA mm Hot junction size, per element.
Element Area
1   A mm2  
Number of Junctions
18       Per element.
Number of Channels
1 Compensated       Per detector package.
Output Voltage 40 48 55 Vs μV DC,  H=330μW/cm2 (3)
Signal-to-Noise Ratio 2,649 3,582 5,140 SNR √Hz DC, SNR=Vs/Vn
Responsivity 12.1 14.5 16.7 V/W DC, =Vs/HA  (2)
Resistance 7.0 11.0 14.0 R Detector element
Temperature Coefficient of   -.36     %/°C Best linear fit, 0° to 85°C (1)
Temperature Coefficient of  R   -.2     %/°C Best fit, 0° to 85°C (1)
Noise Voltage 10.7 13.4 15.1 Vn nV/√Hz Vn2=4kTR
Noise Equivalent Power .64 .92 1.25 NEP nW/√Hz DC,  NEP= VnHA/Vs (2)
Detectivity .8 1.1 1.6 D* 108√Hz/W DC,  D*=Vs/ VnH√A  (2)
Time Constant   48   Τ ms Chopped, -3dB point (1)
Field of View
20°/89°   FOV Degrees See Assembly Drawings for FOV Description.
Package Type
TO-5       Standard package hole size:Ø.150"
Operating Temperature -50   100 Ta °C  

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.
(2) A is detector area in cm2.
(3)Test Conditions: 500K Blackbody source; Detector active surface 10cm from 0.6513cm Diameter Blackbody Aperture.

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