MQ-8 Hydrogen Gas Sensor

Name: MQ-8 Hydrogen Gas Sensor
SKU: TS-P1428
Availability: InStock

The MQ-8 sensor’s tin dioxide (SnO₂) layer has high resistance in clean air. When Hydrogen gas is present, it reacts with oxygen ions on the surface, reducing resistance and producing a higher output voltage.

$3.95

10 in stock

This item: MQ-8 Hydrogen Gas Sensor

10 in stock

$3.95

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Title	Qty	Discount
Qty Discount	4 - 9	5% $3.75
Qty Discount	10 +	8% $3.63

SKU: TS-P1428

Categories:Components & Parts, Gas Sensor

Description

Additional information

Applications

Support & Utility

Q & A

The MQ-8 Gas Sensor is a semiconductor-based sensor specifically designed for detecting hydrogen gas (H₂). It offers high sensitivity and a fast response, making it suitable for hydrogen leak detection, industrial safety systems, and fuel cell monitoring.

The sensor’s core element is a SnO₂ (tin dioxide) sensing layer whose resistance changes when exposed to hydrogen gas, providing an analog output that microcontrollers can easily read.

Specifications:

Gas sensor – MQ-8
Detectable Gases: Hydrogen gas (H₂)
Low Sensitivity: alcohol, LPG, and methane (good selectivity)
Detection range: 100 – 10,000 ppm
Heater voltage (V<sub>H</sub>): 5V ±0.2V
Heater Resistance:31 Ω ±3 Ω
Load Resistance: Adjustable (typically 20 kΩ)
Heater Consumption: ≤900 mW
Preheat time: 24 hours for best stability
Output type: Analog voltage (0–5V)
Dimensions: 18mm Diameter, 17mm High excluding pins, Pins – 6mm

Package Includes:

MQ-8 Hydrogen Gas Sensor

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