+1 (734) 426-3921
Questions about Dexter detectors? Call today. Outside the U.S., contact the representative nearest you.

DR26

DR26 Thermopile circuit overlay
DR26 Thermopile circuit overlay
DR26 Thermopile Detector
DR26 Thermopile Detector

Silicon Based Thermopile Detector

Features:
A two-channel thin-film thermopile that offers low noise in a TO-5 package. Each small active area is 2mm x 0.6mm. This is our lowest noise-voltage two-channel detector.
Applications:
Security, intrusion detection and human presence monitoring, including identifying direction of travel. Other potential applications include non-contact temperature measurement.
Benefit:
Two-channel output and low noise with small active area size and no internal aperture.
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
DR26 (PDF)
Parameter
Min
Typical
Max
Symbol
Units
Comments

Active Area size

2 x .6

AA

mm

Hot junction size, per element.

Element Area

1.2

A

mm2

  

Number of Junctions

26

 

 

Per element.

Number of Channels

2

 

 

Per detector package.

Output Voltage

45

54

62

Vs

μV

DC,  H=330μW/cm2 (3)

Signal-to-Noise Ratio

4,206

5,684

7,209

SNR

√Hz

DC, SNR=Vs/Vn

Responsivity

11.4

13.6

15.7

V/W

DC, =Vs/HA  (2)

Resistance

4.5

5.5

7.0

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

8.6

9.5

10.7

Vn

nV/√Hz

Vn2=4kTR

Noise Equivalent Power

.55

.71

.94

NEP

nW/√Hz

DC,  NEP= VnHA/Vs (2)

Detectivity

1.2

1.6

2.0

D*

108√Hz/W

DC,  D*=Vs/ VnH√A  (2)

Time Constant

 

38

 

Τ

ms

Chopped, -3dB point (1)

Field of View

NA

FOV

Degrees

See Assembly Drawings for FOV Description.

Package Type

TO-5

    

Standard package hole size:Ø.080

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.