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ST150

ST150 Detector circuit overlay
ST150 Detector circuit overlay
ST150 Thermopile Detector
ST150 Thermopile Detector

Silicon Based Thermopile Detector

Features:
A single-channel silicon-based thermopile that delivers a very low Temperature Coefficient of Responsivity of -0.04%/°C with a high output voltage and a quick time constant of 38ms. This Low-cost detector comes in a TO-5 package. This detector has a very short thermal shock response to ambient temperature change.
Applications:
Excellent for gas analysis, fire detection, and non-contact temperature measurement.
Benefit:
High output and low cost with larger 1.5mm x 1.5mm active area.
Options:
  1. See Standard Windows and Filters (PDF) for list of optical filter options.
  2. ST60R Micro version offers a low-cost (20% tolerance) poly-silicon resistor to be used as a PTC thermistor.
  3. Internal 30kΩ 5% NTC chip thermistor provides ambient package temperature measurement. See DC-4005 section of Thermistor Options (PDF).
  4. Internal aperture precisely defines active area for applications with FOV and/or spot size requirements. See Aperture Options (PDF) for available sizes.
  5. See Thermopile Configuration Table for more options.
Datasheet:
For more detailed information see the datasheet
ST150 (PDF)
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

1

 

 

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

1.2

1.8

D*

108√Hz/W

DC,  D*=Vs/ VnH√A  (2)

Time Constant

 

38

 

Τ

ms

Chopped, -3dB point (1)

Field of View

42°/92°

FOV

Degrees

See Assembly Drawings for FOV Description.

Package Type

TO-5

    

Standard package hole size: Ø.150

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.