ST60 TO-18

Features

A single-channel silicon-based thermopile provides lowest cost solutions in a small active area of 0.61mm x 0.61mm in a small TO-18 package. Time constant of 18ms with Nitrogen encapsulation gas. Delivers a very low Temperature Coefficient of Responsivity of -0.04%/°C. This detector has a very short thermal shock response to ambient temperature change.

Applications

Excellent for non-contact temperature, horizon sensor, tympanic ear thermometer, infant thermometer applications.

Benefit

High output, small active area, fast time constant in a small package.

Options

See Standard Windows and Filters (PDF) for list of optical filter 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).
ST60R TO-18 version offers a low-cost (20% tolerance) poly-silicon resistor to be used as a PTC thermistor.

ST60 Detector circuit overlay
ST60 Thermopile Detector

Datasheet

For more detailed information see the datasheet:

ST60 TO-18 343.60 KB

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Parameter	Min	Typical	Max	Symbol	Units	Comments
Active Area size		.61 x .61		AA	mm	Hot junction size, per element.
Element Area		.37		A	mm²
Number of Junctions		80				Per element.
Number of Channels		1				Per detector package.
Output Voltage	65	85	95	V_s	μV	DC, H=330μW/cm² (3)
Signal-to-Noise Ratio	1,994	2,834	3,502	SNR	√Hz	DC, SNR=V_s/V_n
Responsivity	52.9	69.2	77.4		V/W	DC, =V_s/HA (2)
Resistance	45	55	65	R	kΩ	Detector element
Temperature Coefficient of		-.04			%/°C	Best linear fit, 0° to 85°C (1)
Temperature Coefficient of R		.105			%/°C	Best fit, 0° to 85°C (1)
Noise Voltage	27.1	30.0	32.6	V_n	nV/√Hz	V_n²=4kTR
Noise Equivalent Power	.35	.43	.62	NEP	nW/√Hz	DC, NEP= V_nHA/V_s (2)
Detectivity	.99	1.41	1.74	D*	10⁸√Hz/W	DC, D*=V_s/ V_nH√A (2)
Time Constant		15		Τ	ms	Chopped, -3dB point (1)
Field of View		40°/69°		FOV	Degrees	See Assembly Drawings for FOV Description.
Package Type		TO-18				Standard package hole size: Ø.080″
Operating Temperature	-50		100	T_a	°C
ST60R Thermistor Options	24	28	34	R_T	kΩ	PTC Poly-Silicon resistor on detector die.
ST60R Thermistor Temperature Coefficient of R	.100	.105	.110		%/°C	ΔR/(RΔT), Best fit, 0° to 85°C (1)

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

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.