ST60 High Temp: 300°C & 225°C Options

Detector die layout

Detector die layout

ST60 High Temperature

ST60 High Temperature

A specially constructed MEMS based thermopile that will withstand operating temperatures of 300°C with Silicon window and 225°C with coated windows*.  The reduced height (.090” tall cover) helps minimize the thermal path and gradient potential of the package.



1)  225°C operation with performance enhancing energy absorber on active area (limited exposure up to 300°C).  Extended 300°C operation without performance enhancing absorber.  See specs. below.

2) ST60R version offers a low-cost (20% tolerance) poly-silicon resistor to be used as a PTC thermistor up to 300°C.  An internal NTC chip thermistor option is available for operation to 225°C.

3) Package hole size options can customize the active are/FoV per specific application(s), data below is based on .047” dia. opening in cap.

4) Internal compensating die option available for additional gradient compensation.

5) Option with Si+DLC window stable to 300°C.  *Common physical/spectral properties of window coatings limit their operational temp to ~225°C.


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

Specifications apply at 23°C with DLC coated Si window and nitrogen encapsulating gas.  [brackets = data for 300°C option as of ~6/1/18]

Active Area size   .61 x .61   AA mm Hot junction size, per element.
Element Area   .37   A mm2  
Number of Junctions  


      Per element.
Number of Channels   1       Per detector package.
Output Voltage   50 [22]   Vs μV DC,  H=330μW/cm2 (3)
Signal-to-Noise Ratio   1597 [702]   SNR √Hz DC, SNR=Vs/Vn
Responsivity   40.8 [17.9]   V/W DC, =Vs/HA  (2)
Resistance 45 60 70 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   31.3   Vn nV/√Hz Vn2=4kTR
Noise Equivalent Power   .77 [.18]   NEP nW/√Hz DC,  NEP= VnHA/Vs (2)
Detectivity   .79 [.35]   D* 108√Hz/W DC,  D*=Vs/ VnH√A  (2)
Time Constant   18 [<18]   Τ ms Chopped, -3dB point (1)
Field of View  

14°/93° [32°/82°]

  FOV Degrees See Assembly Drawings for FOV Description.
Package Type   TO-5       Standard package hole size: 0.059"
Operating Temperature 0  

225°C [300°C]

  Ta °C With short durations to 250°C
ST60R Thermistor Option 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: 
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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