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1SC Compensated

Thin-Film Based Thermopile Detector

Features: A thin film-based single channel thermopile detector that offers thermal compensation to minimize effects of sudden ambient temperature change during the initial five seconds of change. The 1SC Compensated comes in a TO-5 package with a medium sized 1.0 x 1.0mm active area. Compensation is achieved through the integration of two additional half-sized thermopile elements. Internal aperture is standard and precisely defines active area for applications with FOV and/or spot size requirements.

Applications: Excellent for non-contact temperature measurement.

Benefit: Thermal compensation with increase in noise and a time constant of 48ms in Argon encapsulation gas.

Options:

  1. See Standard Windows and Filters (PDF) for list of optical filter options.
  2. See Thermopile Configuration Table for more options.

Datasheet: For more detailed information see the datasheet (PDF).

1SC Compensated Thermopile detector circuit overlay

1SC Compensated Detector circuit overlay (click image to see larger image)

1SC Compensated Thermopile Detector

1SC Compensated Thermopile

1 SC Compensated Thermopile Detector Technical Specifications

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

Parameter
Min
Typical
Max
Symbol
Units
Comments

Active Area size

1 x 1

AA

mm

Hot junction size, per element.

Element Area

1

A

mm2

  

Number of Junctions

18

 

 

Per element.

Number of Channels

1 Compensated

 

 

Per detector package.

Output Voltage

40

48

55

Vs

μV

DC,  H=330μW/cm2 (3)

Signal-to-Noise Ratio

2,649

3,582

4,545

SNR

√Hz

DC, SNR=Vs/Vn

Responsivity

12.1

14.5

16.7

V/W

DC, =Vs/HA  (2)

Resistance

7.0

11.0

14.0

R

kΩ

Detector element

Temperature Coefficient of

 

-.36

 

 

%/°C

Best linear fit, 0° to 85°C (1)

Temperature Coefficient of  R

 

-.2

 

 

%/°C

Best fit, 0° to 85°C (1)

Noise Voltage

12.1

13.4

15.1

Vn

nV/√Hz

Vn2=4kTR

Noise Equivalent Power

.73

.92

1.30

NEP

nW/√Hz

DC,  NEP= VnHA/Vs (2)

Detectivity

.8

1.1

1.4

D*

108√Hz/W

DC,  D*=Vs/ VnH√A  (2)

Time Constant

 

48

 

Τ

ms

Chopped, -3dB point (1)

Field of View

20°/89°

FOV

Degrees

See Assembly Drawings for FOV Description.

Package Type

TO-5

    

Standard package hole size:Ø.150"

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

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.