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DR46 Compensated

Thin-Film Based Thermopile Detector

Features: A one-channel compensated thin-film thermopile in a TO-8 package. The active area and compensating element area are 4mm x 0.6mm each. Offers high output with very good signal-to-noise ratio. Internal aperture minimizes channel-to-channel crosstalk increasing sensitivity

Applications: Non-contact temperature measurement, fire detection / suppression.

Benefit: High output, low noise compensated rectangular shaped active area in a TO-8 package.

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).

DR46 Compensated Thermopile Detector circuit overlay

DR46 Compensated Detector circuit overlay (click image to see larger image)

 

 

DR46 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

4 x .6

AA

mm

Hot junction size, per element.

Element Area

2.4

A

mm2

  

Number of Junctions

50

 

 

Per element.

Number of Channels

1 Compensated

 

 

Per detector package.

Output Voltage

170

210

250

Vs

μV

DC,  H=330μW/cm2 (3)

Signal-to-Noise Ratio

7,692

11,602

16,556

SNR

√Hz

DC, SNR=Vs/Vn

Responsivity

21.5

26.5

31.6

V/W

DC, =Vs/HA  (2)

Resistance

14

20

30

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

15.1

18.1

22.1

Vn

nV/√Hz

Vn2=4kTR

Noise Equivalent Power

..48

.68

1.03

NEP

nW/√Hz

DC,  NEP= VnHA/Vs (2)

Detectivity

1.5

2.3

3.2

D*

108√Hz/W

DC,  D*=Vs/ VnH√A  (2)

Time Constant

 

40

 

Τ

ms

Chopped, -3dB point (1)

Field of View

N/A

FOV

Degrees

See Assembly Drawings for FOV Description.

Package Type

TO-8 with 3 Pins

   

Standard package hole size:Ø.437

Element Matching

 

5

10

M

%

M=|VA-VB|/VB (2)

Element Separation

 

NA

 

 

mm

Center to Center

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.