Tin Dioxide Semiconductor Gas Sensor for CO Detection - SB-500-12

? Target gas: Carbon Monoxide
? Heater voltage (high): 0.9 V ± 5%
? Heater voltage (low): 0.2 V ± 5%
? Circuit voltage: Less than 5 V
? Operating temperature: -10°C to 60°C
? Storage temperature: -30°C to 100°C
? Relative humidity: Less than 95% RH
? Sensor resistance: 4.5 k? - 40 k?

  • Model Number: SB-500-12
  • Data Sheet: Date Sheet File
Quantity:
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  • Tin Dioxide Semiconductor Gas Sensor for CO Detection
  • Tin Dioxide Semiconductor Gas Sensor for CO Detection
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Product Specification

SB-500-12?Carbon Monoxide Sensor?CO Sensor?Description
The SB-500-12 is a tin dioxide semiconductor gas sensor which has an excellent performance in CO detection. Using a mini-bead type sensing element with a periodic temperature change operation method, high sensitivity, selectively, small effect from humidity and other remarkable characteristics have been achieved. The SB-500-12 realizes the development of reliable CO detection devices.

SB-500-12?Carbon Monoxide Sensor?CO Sensor?Application
? Home gas leak detector

SB-500-12?Carbon Monoxide Sensor?CO Sensor?Specifications

Standard Operating conditions
Symbol
Parameter
Specification
Conditions etc.
VH?(H)
Heater voltage?(high)
0.9 V ± 5%
AC, DC or pulse
VH?(L)
Heater voltage?(low)
0.2 V ± 5%
AC, DC or pulse
VC Circuit voltage
Less than 5 V
DC: Pin2 (+) - Pin 1 (-)
RL Load resistance
Variable (> 200 ?)
PS?< 10 mW
RH Heater resistance
2.8 ? ± 0.2 ?
at room temperature
TH?(H)
Heating time (high)
5 sec ± 0.1 sec

TH?(L)
Heating time (low)
20 sec ± 0.1 sec

DT (L)
Detection timing (low)
< 0.1 sec
before switching to LOW
IS?(H) Current?consumption (high)
132mA ± 15mA
VH=0.9V
IS?(L) Current?consumption (low)
59mA ± 10mA
VH=0.2V
PS
Power dissipation
Less than?10 mW

Environmental conditions
Symbol
Parameter
Specification
Conditions etc.
Tao
Operating?temperature
-10°C to 60°C
Recommended range
Tas
Storage?temperature
-30°C to 100°C
RH
Relative humidity
Less than 95% RH
(O2)
Oxygen?concentration
21% ± 1%
(Standard condition)
Absolute minimum level:
more than 18%
The sensitivity characteristics are influenced by the
variation in oxygen concentration. Please consult FIS
for details.
Sensitivity characteristics
Model
SB-500-12
Symbol
Parameter
Specification
Conditions?etc.
RS
Sensor resistance
4.5 k? - 40 k?
at 100ppm of CO
α(30-100)
Sensitivity slope (30?- 100 ppm)
1.05 to 2.1
log (RS(30 ppm)?/ RS(100 ppm))
log (30/100)
α(100-300)
Sensitivity slope (100 -?300 ppm)
0.5 to 1.0
log?(RS(300 ppm)?/ RS(100 ppm))
log?(300/100)
Standard Test Conditions:
Temp: 20°C ± 2°C
Humidity: 65% ± 5%
(in clean air)?

VC? ? ? ?????: 5.0 V ± 5%
VH?(high)?: 0.9 V ± 5%
VH?(low)??: 0.2 V ± 5%
?RL? ? ??????: 10 k? ± 1%
Pre-heating time: more than 4 days
Mechanical characteristics
Items
Conditions
Specifications
Vibration
Frequency:
Acceleration:
Sweep time:
5?-?500 Hz
1.3G
40 min.
Should satisfy the
specifications shown in the
sensitivity characteristics after
test.
Drop
Height:
Number of impacts:
60 cm
3 times

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