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ST60 LCC

Silicon Based Thermopile Detector

PRELIMINARY

Features: A single-channel silicon-based thermopile in a LCC package for surface mount assembly in a small active area of 0.61mm x 0.61mm. 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, and horizon sensor.

Benefit: Low cost surface mount assembly and small active area size with medium output.

Options:

  1. See Standard Windows and Filters (PDF) for list of optical filter options.
  2. ST60R LCC version offers a low-cost (20% tolerance) poly-silicon resistor to be used as a PTC thermistor.
  3. Internal 30kΩ 5% NTC chip thermistor provides ambient package temperature measurement. See DC-4005 section of Thermistor Options (PDF).
  4. Internal aperture precisely defines active area for applications with FOV and/or spot size requirements. See Aperture Options (PDF) for available sizes.
  5. See Thermopile Configuration Table for more options.

Datasheet: For more detailed information see the datasheet (PDF).

ST60 TO-5 Thermopile Detector circuit overlay

ST60 LCC Detector circuit overlay
(click image to see larger image)

ST60 TO-5 Thermopile Detector

ST60 LCC Thermopile Detector

ST60 LCC Thermopile Detector Technical Specifications

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

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

50

62

74

Vs

μV

DC,  H=330μW/cm2 (3)

Signal-to-Noise Ratio

1,381

1,981

2,891

SNR

√Hz

DC, SNR=Vs/Vn

Responsivity

40.7

50.5

60.3

V/W

DC, =Vs/HA  (2)

Resistance

40

60

80

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

25.6

31.3

36.2

Vn

nV/√Hz

Vn2=4kTR

Noise Equivalent Power

.42

.62

.89

NEP

nW/√Hz

DC,  NEP= VnHA/Vs (2)

Detectivity

.69

.98

1.44

D*

108√Hz/W

DC,  D*=Vs/ VnH√A  (2)

Time Constant

 

18

 

Τ

ms

Chopped, -3dB point (1)

Field of View

45°/81°

FOV

Degrees

See Assembly Drawings for FOV Description.

Package Type

LCC

    

Standard package hole size: Ø.069

Operating Temperature

-50

 

100

Ta

°C

  

ST60R Thermistor Options

~24

30

~36

RT

kΩ

PTC Poly-Silicon resistor on detector die.

ST60R 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.