ST150 Single-Channel Silicon-Based Thermopile Detector

ST150 is a single-channel silicon-based thermopile from Dexter, delivering a low temperature coefficient of responsivity of -0.04%/°C. The low-cost detector has a high output voltage with a quick time constant of 38ms.

It is supplied in a TO-5 package. In addition, it exhibits a very short thermal shock response to changes in ambient temperature.

Benefits

The key benefits of the ST150 include:

High output

Low cost

Large active area of 1.5 x 1.5mm

Options

The options available include:

A range of optical filter options are available

ST60R Micro version provides an economical (20% tolerance) poly-silicon resistor to be employed as a PTC thermistor

Internal 30kΩ 5% NTC chip thermistor offers ambient package temperature measurement

Internal aperture accurately defines active area for applications with FOV and/or spot size requirements

Applications

The ST150 is suitable for the following applications:

Gas analysis

Fire detection

Non-contact temperature measurement

Technical Specifications

The technical specifications of the ST150 are summarized in the following table:

Parameter	Min	Typical	Max	Symbol	Units	Comments
Active Area size	1.5 x 1.5			AA	mm	Hot junction size, per element.
Element Area	2.25			A	mm²
Number of Junctions	120					Per element.
Number of Channels	1					Per detector package.
Output Voltage	180	230	280	V_s	μV	DC, H=330μW/cm² (3)
Signal-to-Noise Ratio	4,063	5,990	8,946	SNR	√Hz	DC, SNR=V_s/V_n
Responsivity	24.2	31.0	37.7	ℜ	V/W	DC, ℜ=V_s/HA (2)
Resistance	60	90	120	R	kΩ	Detector element
Temperature Coefficient of ℜ		-.04			%/°C	Best linear fit, 0° to 85°C (1)
Temperature Coefficient of R		.11			%/°C	Best fit, 0° to 85°C (1)
Noise Voltage	31.3	38.4	44.3	V_n	nV/√Hz	V_n ²=4kTR
Noise Equivalent Power	.83	1.24	1.83	NEP	nW/√Hz	DC, NEP= V_n HA/V_s (2)
Detectivity	.82	1.2	1.8	D*	10⁸cm√Hz/W	DC, D*=V_s/ V_n H√A (2)
Time Constant		38		ℑ	ms	Chopped, -3dB point (1)
Field of View	42°/92°			FOV	Degrees	See Assembly Drawings for FOV Description.
Package Type	TO-5,					Standard package hole size: Φ.150”
Operating Temperature	-50		100	T_a	°C	Short durations to 125°C possible
ST150R Thermistor Option	55	75	95	R_T	kΩ	PTC Poly-Silicon resistor on detector die.
ST150R Thermistor Temperature Coefficient of R	.107	.11	.113		%/°C	ΔR/(RΔT), Best fit, 0° to 85°C (1)

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 ST150 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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