Datasheet

Thermopile detectors
T11361 series
High-sensitivity thermopile detectors with thermistor
For gas density measurements
The T11361 series is a family of thermopile detectors equipped with an internal thermistor for compensating for output variations caused by changes in the ambient temperature. The T11361-01 is suited for gas density measurements or the like. It
uses a TO-18 package with a window having high transmittance in the 3 to 5 μm spectral band. By attaching an external
band-pass filter to the thermopile detector, customers can apply it to various types of gas density measurements. The T1136105 employs a 4.3 μm band-pass filter and is suitable for CO2 density measurements.
Features
Applications
Spectral response: 3 to 5 μm (T11361-01), 4.3 μm (T11361-05)
Gas density measurement and the like (T11361-01)
TO-18 package
CO2 density measurement (T11361-05)
High sensitivity
Built-in thermistor
Absolute maximum ratings
Parameter
Symbol
T11361-01
T11361-05
Operating temperature
Topr
-30 to +85
-10 to +80
Storage temperature
Tstg
-40 to +100
-20 to +85
Thermistor power dissipation
Pth
0.2
Note: Exceeding the absolute maximum ratings even momentarily may cause a drop in product quality. Always be sure
product within the absolute maximum ratings.
Unit
°C
°C
mW
to use the
Structure
Parameter
Photosensitive area
Package
Window material
Symbol
A
-
Condition
-
T11361-01
T11361-05
1.2 × 1.2
TO-18
AR coating Si with 3 to 5 μm
4.3 μm band-pass filter
high-transmittance
Unit
mm
-
Electrical and optical characteristics (Ta=25 °C)
Parameter
Symbol
Spectral response
Photosensitivity
Element resistance
Noise voltage
Noise equivalent power
Detectivity
Rise time
Temperature coefficient
of element resistance
Field of view
Thermistor resistance
Constant B
λ
S
Re
Vn
NEP
D*
tr
Condition
1 Hz, 500 K
Johnson noise
0 to 63%
TCR
FOV
Rth
B
Photosensitivity 50%
25/75 °C
T11361-01
Min.
Typ.
3 to 5
40
50
100
125
45
0.9
0.9 × 108 1.3 × 108
20
Max.
60
150
50
1.3
30
T11361-05
Min.
Typ.
4.3
40
50
100
125
45
0.9
0.9 × 108 1.3 × 108
20
Unit
Max.
60
150
50
1.3
30
μm
V/W
kΩ
nV/Hz1/2
nW/Hz1/2
cm∙Hz1/2/W
ms
-
±0.1
-
-
±0.1
-
%/°C
9
3800
90
10
3900
11
4000
9
3800
90
10
3900
11
4000
degrees
kΩ
K
www.hamamatsu.com
1
Thermopile detectors
T11361 series
100
100
90
90
80
80
Transmittance (%)
Transmittance (%)
Spectral transmittance of window material (typical example)
70
60
50
40
30
T11361-01
70
60
50
40
T11361-05
30
20
20
T11361-01
10
10
T11361-05
0
2.5
5
7.5
0
10
12.5
15
17.5
20
3
3.5
4
4.5
5
Wavelength (μm)
Wavelength (μm)
KIRDB0608EA
KIRDB0609EA
Directivity
(Typ. Ta=25 °C)
20°
10°
0°
10°
20°
100%
30°
30°
80%
40°
50°
60%
40%
60°
70°
40°
50°
60°
20%
70°
80°
80°
90°
90°
Relative sensitivity (%)
KIRDB0451EA
2
Thermopile detectors
T11361 series
Operating circuit
+V
+V
Thermopile detector
Ra
3 7
+ 6
2-
Vout
4
Thermistor
Rth
R1
Rb
-V
R2
C1
Rd
Gain = 1 + (R2/R1)
fhigh = 1/(2πR2 C1)
Rc
Vth
KIRDC0051EB
Note: For details on how to determine Ra, Rb, Rc, and Rd, see
“(2) Circuit using thermistor” in “Single/dual/quad element types” in “1-4 How to use” in “1. Thermopile detectors” in chapter 7,
“Thermal detectors,” of the Opto-semiconductor Handbook (released in November 2013).
Dimensional outline (unit: mm)
5.4 ± 0.2
4.6 ± 0.2
Window
Photosensitive area 1.2 × 1.2
5
2.
2.80 ± 0.2
2.
5
12.7 ± 0.5
1.3 ± 0.2
Filter
Thermistor
Thermopile (+)
ɸ2
.5
4
±
0.
2
Lead
(4 ×) ɸ0.43
Pin connections
0
1.
Thermopile (-)
Case
±
2
0.
64
.
ax
m
8 45°
1.
KIRDA0240EA
3
Thermopile detectors
T11361 series
Precautions (T11361-05)
The T11361-05 band-pass filter has a second order transmission at 10 μm or higher. If this causes an unwanted effect, install a sapphire glass or the like in front of the light input window to cut the long wavelengths.
Related information
www.hamamatsu.com/sp/ssd/doc_en.html
Precautions
∙ Disclaimer
∙ Metal, ceramic, plastic package product
Information described in this material is current as of March, 2015.
Product specifications are subject to change without prior notice due to improvements or other reasons. This document has been carefully prepared and the
information contained is believed to be accurate. In rare cases, however, there may be inaccuracies such as text errors. Before using these products, always
contact us for the delivery specification sheet to check the latest specifications.
The product warranty is valid for one year after delivery and is limited to product repair or replacement for defects discovered and reported to us within that
one year period. However, even if within the warranty period we accept absolutely no liability for any loss caused by natural disasters or improper product use.
Copying or reprinting the contents described in this material in whole or in part is prohibited without our prior permission.
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HAMAMATSU PHOTONICS K.K., Solid State Division
1126-1 Ichino-cho, Higashi-ku, Hamamatsu City, 435-8558 Japan, Telephone: (81) 53-434-3311, Fax: (81) 53-434-5184
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North Europe: Hamamatsu Photonics Norden AB: Torshamnsgatan 35 16440 Kista, Sweden, Telephone: (46) 8-509-031-00, Fax: (46) 8-509-031-01
Italy: Hamamatsu Photonics Italia S.r.l.: Strada della Moia, 1 int. 6, 20020 Arese (Milano), Italy, Telephone: (39) 02-93581733, Fax: (39) 02-93581741
China: Hamamatsu Photonics (China) Co., Ltd.: B1201, Jiaming Center, No.27 Dongsanhuan Beilu, Chaoyang District, Beijing 100020, China, Telephone: (86) 10-6586-6006, Fax: (86) 10-6586-2866
Cat. No. KIRD1125E02 Mar. 2015 DN
4
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