A two-channel silicon-based thermopile detector in a TO-8 package. Each active area size is 1.5mm x 1.5mm. Affordable two-channel design with strong output and a very low Temperature Coefficient of Responsivity of -0.04%/°C.
Gas analysis for automotive emissions, environmental air quality, blood alcohol testing.
Price and output with moderate signal-to-noise ratio.
ST150 Dual Thermopile Detector
ST150 Dual Detector circuit overlay
For more detailed information see the datasheet:
| Parameter | Min | Typical | Max | Symbol | Units | Comments |
|---|---|---|---|---|---|---|
| Active Area size | 1.5 x 1.5 | AA | mm | Hot junction size, per element. | ||
| Element Area | 2.25 | A | mm2 | |||
| Number of Junctions | 120 | Per element. | ||||
| Number of Channels | 2 | Per detector package. | ||||
| Output Voltage | 180 | 230 | 280 | Vs | μV | DC, H=330μW/cm2 (3) |
| Signal-to-Noise Ratio | 4,063 | 5,990 | 8,946 | SNR | √Hz | DC, SNR=Vs/Vn |
| Responsivity | 24.2 | 31.0 | 37.7 |  |
V/W | DC, =Vs/HA (2) |
| Resistance | 60 | 90 | 120 | R | kΩ | 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 | 38.4 | 44.3 | Vn | nV/√Hz | Vn2=4kTR |
| Noise Equivalent Power | .83 | 1.24 | 1.83 | NEP | nW/√Hz | DC, NEP= VnHA/Vs (2) |
| Detectivity | .82 | 1.21 | 1.81 | D* | 108√Hz/W | DC, D*=Vs/ VnH√A (2) |
| Time Constant | 38 | Τ | ms | Chopped, -3dB point (1) | ||
| Field of View | 27°/99° | FOV | Degrees | See Assembly Drawings for FOV Description. | ||
| Package Type | TO-5 | Standard package hole size: (2) .090″ X 0.90″ sq. holes | ||||
| Element Matching | 5 | 10 | M | % | M=|VA-VB|/VB (2) | |
| Element Separation | 3.30 | mm | Center to Center | |||
| Operating Temperature | -50 | 100 | Ta | °C | ||
| ST150R Thermistor Options | 55 | 75 | 95 | RT | kΩ | PTC Poly-Silicon resistor on detector die. |
| ST150R 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
Notes:
(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.