S60M TO-18

S60M Detector circuit overlay

S60M Detector circuit overlay

A single-channel silicon-based thermopile with very high output for its small 0.6mm x 0.6mm active area in a small TO-18 package. Delivers a fast 18ms time constant in Argon encapsulation gas and even faster with Neon gas at 9ms.Delivers a very low Temperature Coefficient of Responsivity of -0.04%/°C.

Excellent for non-contact temperature and gas analysis.

High output, small active area, fast time constant in a small package that has a higher cost.


  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 S60M TO-18 (PDF).

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

Parameter Min Typical Max Symbol Units Comments
Active Area size   .6 x .6   AA mm Hot junction size, per element.
Element Area   .36   A mm2  
Number of Junctions   72       Per element.
Number of Channels   1       Per detector package.
Output Voltage   89   Vs μV DC,  H=330μW/cm2 (3)
Signal-to-Noise Ratio   2,320   SNR √Hz DC, SNR=Vs/Vn
Responsivity   74.9   V/W DC, =Vs/HA  (2)
Resistance 65 90 120 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 32.6 38.4 42.4 Vn nV/√Hz Vn2=4kTR
Noise Equivalent Power   .51   NEP nW/√Hz DC,  NEP= VnHA/Vs (2)
Detectivity   1.17   D* 108√Hz/W DC,  D*=Vs/ VnH√A  (2)
Time Constant   18   Τ ms Chopped, -3dB point (1)
Field of View   76°/111°   FOV Degrees See Assembly Drawings for FOV Description.
Package Type   TO-18       Standard package hole size:Ø.080"
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.


* Protected by U.S. Patent No. 5, 059,543 and U.S. Patent No. 5,100,479

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