Dexter’s 3M thin film-based single element thermopile detector provides the highest output among all in the series. It has a high signal-to-noise ratio with a larger TO-8 package.
Benefits
The key benefits of the 3M thin film-based single element thermopile include:
- High signal-to-noise ratio
- Larger TO-8 package
- High output
Applications
The 3M thin film-based single element thermopile can be used in the following application:
- Gas analysis
- Laser power measurement
Technical Specifications
The technical specifications of the 3M thin film-based single element thermopile are summarized in the following table:
| Parameter |
Min |
Typical |
Max |
Symbol |
Units |
Comments |
| Active Area size |
3 x 3 |
AA |
mm |
Hot junction size, per element. |
| Element Area |
9 |
A |
mm2 |
|
| Number of Junctions |
72 |
|
|
Per element. |
| Number of Channels |
1 |
|
|
Per detector package. |
| Output Voltage |
400 |
440 |
500 |
Vs |
μV |
DC, H=330μW/cm2 (3) |
| Signal-to-Noise Ratio |
18,100 |
25,581 |
31,847 |
SNR |
√Hz |
DC, SNR=Vs/Vn |
| Responsivity |
13.5 |
14.8 |
16.8 |
ℜ |
V/W |
DC, ℜ=Vs/HA (2) |
| Resistance |
15 |
18 |
30 |
R |
kΩ |
Detector element |
| Temperature Coefficient of ℜ |
|
-.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 |
15.7 |
17.2 |
22.1 |
Vn |
nV/√Hz |
Vn 2=4kTR |
| Noise Equivalent Power |
.93 |
1.16 |
1.64 |
NEP |
nW/√Hz |
DC, NEP= Vn HA/Vs (2) |
| Detectivity |
1.8 |
2.6 |
3.2 |
D* |
108cm√Hz/W |
DC, D*=Vs/ Vn H√A (2) |
| Time Constant |
|
100 |
|
ℑ |
ms |
Chopped, -3dB point (1) |
| Field of View |
63°/120° |
FOV |
Degrees |
See Assembly Drawings for FOV Description. |
| Package Type |
TO-8 |
|
|
Standard package hole size: Φ.250” |
| 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.
General Specifications
The general specifications of the 3M thin film-based single element thermopile are listed below:
- Flat spectral response from 100nm to > 100μm
- Linear signal output from 10-6 to 0.1W/cm2
- Maximum incident radiance is 0.1W/cm2
- Damage threshold is ≥ 0.5W/cm2
Notes
- Specifications apply at 23°C with KBr window and nitrogen encapsulating gas
- 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