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M5

M5 Detector circuit overlay
M5 Detector circuit overlay
M5 Thermopile Detector
M5 Thermopile Detector

Thin Film Based Thermopile Detector

Features:
A thin film-based thermopile offering very low noise and a small 0.5mm diameter active area in a TO-5 package. This is one of the lowest noise thermopiles you can buy and provides a time constant 28ms time constant with Argon encapsulation gas.
Applications:
Excellent for non-contact temperature measurement.
Benefit:
Small active area with medium signal-to-noise ratio.
Options:
  1. See Standard Windows and Filters (PDF) for list of optical filter options.
  2. Internal aperture precisely defines active area for applications with FOV and/or spot size requirements. See Aperture Options (PDF) for available sizes.
  3. See Thermopile Configuration Table for more options.
Datasheet:
For more detailed information see the datasheet
M5 (PDF)

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

Parameter
Min
Typical
Max
Symbol
Units
Comments

Active Area size

Ø.5mm Dia.

AA

mm

Hot junction size, per element.

Element Area

.196

A

mm2

  

Number of Junctions

10

 

 

Per element.

Number of Channels

1

 

 

Per detector package.

Output Voltage

22

35

45

Vs

μV

DC,  H=330μW/cm2 (3)

Signal-to-Noise Ratio

2,716

5,000

7,895

SNR

√Hz

DC, SNR=Vs/Vn

Responsivity

34.0

54.1

69.6

V/W

DC, =Vs/HA  (2)

Resistance

2.0

3.0

4.0

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

5.7

7.0

8.1

Vn

nV/√Hz

Vn2=4kTR

Noise Equivalent Power

.08

.13

.24

NEP

nW/√Hz

DC,  NEP= VnHA/Vs (2)

Detectivity

1.9

3.4

5.4

D*

108√Hz/W

DC,  D*=Vs/ VnH√A  (2)

Time Constant

 

28

 

Τ

ms

Chopped, -3dB point (1)

Field of View

64°/78°

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.