Tin Dioxide Semiconductor Gas Sensor for Hydrocarbon Detection - SB-11A-00

• Target gas: Methane/Propane/Hydrocarbons/Hydrogen
• Heater voltage: 0.9 V ± 0.05 V
• Circuit voltage: Less than 5 V
• Operating temperature: -20°C to 50°C
• Storage temperature: -20°C to 70°C
• Relative humidity: Less than 95% RH
• Sensor resistance: 0.2kΩ to 1.0 kΩ
• Home gas leak detector

  • Model Number: SB-11A-00
  • Data Sheet: Date Sheet File
Quantity:
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  • Tin Dioxide Semiconductor Gas Sensor for Hydrocarbon Detection
  • Tin Dioxide Semiconductor Gas Sensor for Hydrocarbon Detection
  • Tin Dioxide Semiconductor Gas Sensor for Hydrocarbon Detection
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Product Specification

SB-11A-00 Hydrocarbon Gas Sensor Description
The SB-11A is a tin dioxide semiconductor gas sensor which has an excellent performance in methane, propane, butane and other hydrocarbons detection with significant low power consumption concept (120mW).

High sensitivity, low sensitivity to noise gases, quick response speed and strong poisoning resistance features achieve reliable gas detection system applications.

SB-11A-00 Hydrocarbon Gas Sensor Application
• Home gas leak detector

SB-11A-00 Hydrocarbon Gas Sensor Specifications

Standard Operating conditions
Symbol
Parameter
Specification
Conditions etc.
VH
Heater voltage
0.9 V ± 0.05 V
AC or DC
VC Circuit voltage
Less than 5 V
DC (polarity is important)
RL Load resistance
Variable  (> 200 Ω)
PS < 10 mW
RH Heater resistance
2.8 Ω ± 0.2 Ω
at room temperature
IH
Heater current
130 mA
IH = VH / RH (typical value)
PH Heater power consumption
120 mW
PH = VH2 / RH (typical value)
PS Power dissipation
of sensing element
Less than 10 mW
PS = (VC - VRL)2/RS
Environmental conditions
Symbol
Parameter
Specification
Conditions etc.
Tao
Operating temperature
-20°C to 50°C
Recommended range
Tas
Storage temperature
-20°C to 70°C
RH
Relative humidity
Less than 95% RH
(O2)
Oxygen concentration
21% (Standard condition)
Absolute minimum level:
more than 18%
The sensitivity characteristics are influenced
by the variation in oxygen concentration.
Sensitivity characteristics
Model
SB-11A-00 (revised on March 6, 2008)
Symbol
Parameter
Specification
Conditions etc.
RS
Sensor resistance
0.2kΩ to 1.0 kΩ
at methane 3000 ppm
β
Sensitivity
0.48 to 0.68
 Rs (at CH4 3000 ppm) 
Rs (at CH4 1000 ppm)
γ
Sensitivity
≥ 8.0
             Rs (in air)              
Rs (at i-C4H10 1000 ppm)

Sensitivity
≥ 10.0
          Rs (in air)            
Rs (at CH4 3000 ppm)
Standard Test Conditions:
Temp: 20°C ± 2°C
Humidity:65% ± 5%
(in clean air)
VC : 5.0 V ± 1%
VH : 0.9 V ± 1%
RL : 750 Ω ± 5%
Pre-heating time: more than 48 hours
Mechanical characteristics
Items
Conditions
Specifications
Vibration
Frequency:
Vertical amplitude:
Duration:
100 cpm
4 mm
1 hour
Should satisfy the
specifications shown in
the sensitivity characteristics.
Shock
Acceleration:
Number of impacts:
100 G
5 times

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