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Tin Dioxide Semiconductor Gas Sensor for Hydrogen Detection - SB-19-00

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• Target gas: Hydrogen
• Heater voltage: 0.9 V ± 5%
• Operating temperature: -10°C to 60°C
• Storage temperature: -20°C to 70°C
• Relative humidity: Less than 95% RH
• Sensor resistance: 0.2 kΩ to 2.0 kΩ
• Sensitivity: 0.6 to 1.2
• Industrial gas leak detector

Model Number: SB-19-00
Data Sheet:

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Product Specification

SB-19-00 Hydrogen Sensor H2 Sensor Description
The SB-19-00 is a tin dioxide semiconductor gas sensor which has an excellent sensitivity and selectivity to hydrogen.

Significant low power consumption design (120mW) is advantageous for portable gas detection devices.

SB-19-00 Hydrogen Sensor H2 Sensor Application
• Industrial gas leak detector

SB-19-00 Hydrogen Sensor H2 Sensor Specifications

Standard Operating conditions
Symbol	Parameter	Specification	Conditions etc.
V_H	Heater voltage	0.9 V ± 5%	AC, DC or pulse
V_C	Circuit voltage	Less than 5 V	DC: Pin2 (+) - Pin 1 (-)
R_L	Load resistance	Variable (> 200 Ω)	P_S < 10 mW
R_H	Heater resistance	2.8 Ω ± 0.2 Ω	at room temperature
I_H	Heater current	130 mA	I_H = V_H/R_H (typical value)
P_H	Heater power consumption	120 mW	P_H = V_H²/R_H (typical value)
P_S	Power dissipation of sensing element	Less than 10 mW	P_S = (V_C - V_RL)²/R_S
Environmental conditions
Symbol	Parameter	Specification	Conditions etc.
Tao	Operating temperature	-10°C to 60°C	Recommended range
Tas	Storage temperature	-20°C to 70°C
RH	Relative humidity	Less than 95% RH
(O2)	Oxygen concentration	21% ± 1% (Standard condition)	Absolute minimum level: more than 18%
(O2)	Oxygen concentration	The sensitivity characteristics are influenced by the variation in oxygen concentration. Please consult FIS for details.
Sensitivity characteristics
Model	SB-19-00
Symbol	Parameter	Specification	Conditions etc.
R_S	Sensor resistance	0.2 kΩ to 2.0 kΩ	in hydrogen 100 ppm
β	Sensitivity	0.6 to 1.2	log(Rs(1000 ppm)/Rs(100ppm)) log(1000/100)
Standard Test Conditions:		Temp: 20°C ± 2°C Humidity:65% ± 5% (in clean air)	V_C : 5.0 V ± 1% V_H : 0.9 V ± 1% R_L : 750 kΩ ± 5%
Standard Test Conditions:		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 after test.
Shock	Acceleration: Number of impacts:	100 G 5 times