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SLA32

Silicon Based Thermopile Array

Features: A 2 x 16 staggered element silicon-based thermopile array. Each active area is 0.05mm x 0.64mm with a time constant of 7ms and a very low Temperature Coefficient of Responsivity of -0.01%/°C. It is packaged in a 38-pin DIP.

Applications: Spectral analysis and line temperature measurements.

Benefits: A proven design with no readout electronics.

Export License Required

Not Currently RoHS Compliant

Options:

  1. See Standard Windows and Filters (PDF) for list of optical filter options.
  2. Two i nternal 30kΩ 5% NTC chip thermistors provide ambient package temperature measurement. See DC-4005 section of Thermistor Options (PDF).

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

SLA32 Thermopile Array circuit overlay

SLA32 Array circuit overlay

SLA32 Thermopile Array

SLA32 Thermopile Array

SLA32 Thermopile Array Technical Specifications

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

Parameter
Min
Typical
Max
Symbol
Units
Comments

Active Area size

0.5 x .65

AA

mm

Hot junction size, per element.

Element Area

.0325

A

mm2

  

Number of Junctions

74

 

 

Per element.

Number of Channels

2 x 16 staggered

 

 

Per detector package.

Output Voltage

10.0

14.8

20.0

Vs

μV

DC,  H=330μW/cm2 (3)

Signal-to-Noise Ratio

250

423

741

SNR

√Hz

DC, SNR=Vs/Vn

Responsivity

93.2

138.0

186.5

V/W

DC, =Vs/HA  (2)

Resistance

45

76

100

R

kΩ

Detector element

Temperature Coefficient of

 

-.01

 

 

%/°C

Best linear fit, 0° to 85°C (1)

Temperature Coefficient of  R

 

-.2

 

 

%/°C

Best fit, 0° to 85°C (1)

Noise Voltage

27

35

40

Vn

nV/√Hz

Vn2=4kTR

Noise Equivalent Power

.15

.26

.43

NEP

nW/√Hz

DC,  NEP= VnHA/Vs (2)

Detectivity

4.2

7.1

12.0

D*

108√Hz/W

DC,  D*=Vs/ VnH√A  (2)

Time Constant

 

7

 

Τ

ms

Chopped, -3dB point (1)

Field of View

N/A

FOV

Degrees

See Assembly Drawings for FOV Description.

Package Type

.97" x 1.27"

   

Standard package hole size:Ø.437

Element Matching

 

5

10

M

%

M=|VA-VB|/VB (2)

Element Separation

 

.31

 

 

mm

Center to Center

Operating Temperature

-50

 

100

Ta

°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.