3M Thin Film-Based Single Element Thermopile Detector

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	V_s	μV	DC, H=330μW/cm² (3)
Signal-to-Noise Ratio	18,100	25,581	31,847	SNR	√Hz	DC, SNR=V_s/V_n
Responsivity	13.5	14.8	16.8	ℜ	V/W	DC, ℜ=V_s/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	V_n	nV/√Hz	V_n ²=4kTR
Noise Equivalent Power	.93	1.16	1.64	NEP	nW/√Hz	DC, NEP= V_n HA/V_s (2)
Detectivity	1.8	2.6	3.2	D*	10⁸cm√Hz/W	DC, D*=V_s/ V_n 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	T_a	°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

标签：Thermocouples

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