ST150 With Diffractive Lens

Features

A single-channel silicon-based thermopile with integrated diffractive lens and internal baffle that delivers a very low Temperature Coefficient of Responsivity of -0.04%/°C with a high output voltage, 19.5° FOV and a quick time constant of 38ms. This Low-cost detector comes in a TO-5 package and has a very short thermal shock response to ambient temperature change.

Applications

Excellent for 19.5° FOV non-contact temperature measurement.

Benefit

High output, narrow FOV, and low cost with larger 1.5mm x 1.5mm active area.

Options

See Thermopile Configuration Table for more options.
Internal 30kΩ 5% NTC chip thermistor provides ambient package temperature measurement. See DC-4005 section of Thermistor Options (PDF).
ST150R version offers a low-cost (20% tolerance) poly-silicon resistor to be used as a PTC thermistor.

ST150 Thermopile Detector
ST150 Detector circuit overlay

Datasheet

For more detailed information see the datasheet:

ST150 Lens 251.08 KB

Download

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	240	325	400	V_s	μV	DC, H=330μW/cm² (3)
Signal-to-Noise Ratio	6,250	9,286	12,780	SNR	√Hz	DC, SNR=V_s/V_n
Responsivity	32.3	43.8	53.9		V/W	DC, =V_s/HA (2)
Resistance	60	90	120	R	kΩ	Detector element
Temperature Coefficient of		-.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	35.0	38.4	V_n	nV/√Hz	V_n²=4kTR
Noise Equivalent Power	.58	.80	1.19	NEP	nW/√Hz	DC, NEP= V_nHA/V_s (2)
Detectivity	1.26	1.87	2.58	D*	10⁸√Hz/W	DC, D*=V_s/ V_nH√A (2)
Time Constant		38		Τ	ms	Chopped, -3dB point (1)
Field of View		19.5°		FOV	Degrees	See Assembly Drawings for FOV Description.
Package Type		TO-5 with lens				Standard package hole size: Ø.150
Operating Temperature	-50		100	T_a	°C
ST150R Thermistor Options	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)

Specifications apply at 23°C with AR coated Diffractive Lens (P/N: DC-6132) and Nitrogen encapsulating gas.

AR coated Diffractive Silicon Lens 433.51 KB

Download

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.