ST60 High Temperature

Detector die layout

Detector die layout

ST60 High Temperature

ST60 High Temperature

A single-channel silicon-based thermopile that will withstand operating temperatures of 225°C, with a small active area of 0.61mm x 0.61mm in a TO-5 package. The reduced height package functions as an internal aperture. Two thermistor options provide ambient package temperature measurement. Currently only available with 8-14um silicon window. Time constant of 18ms with Nitrogen encapsulation gas delivers a very low Temperature Coefficient of Responsivity of -0.4%°C. This detector has a very short thermal shock response to ambient temperature change.

Excellent for non-contact temperature measurement and fire detection/suppression in extreme heat environments.

Operating temperatures to 225°C with small active area size with medium output.


  1. Package hole size options precisely define active area for applications with FOV and/or spot size requirements.
  2. See Thermopile Configuration Table for more options.
  3. ST60R version offers a low-cost (20% tolerance) poly-silicon resistor to be used as a PTC thermistor.

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

Specifications apply at 23°C with 8-14um Silicon 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 18.1 27.1 29.7 Vs μV DC,  H=330μW/cm2 (3)
Signal-to-Noise Ratio 535 865 1095 SNR √Hz DC, SNR=Vs/Vn
Responsivity 14.7 22.1 24.2 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 .27 .31 .34 Vn nV/√Hz Vn2=4kTR
Noise Equivalent Power 1.12 1.42 2.30 NEP nW/√Hz DC,  NEP= VnHA/Vs (2)
Detectivity .27 .43 .54 D* 108√Hz/W DC,  D*=Vs/ VnH√A  (2)
Time Constant   18   Τ ms Chopped, -3dB point (1)
Field of View   48°/93°   FOV Degrees See Assembly Drawings for FOV Description.
Package Type   TO-5       Standard package hole size: 0.059"
Operating Temperature -50   225 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: 
Flat spectral response from 8-14µm.  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.

Product Finder

Product Comparison Guide

The Gold Standard

The Collaboration Station

Contact Us