| Model | MQ-8 | ||
| Sensor Type | Semiconductor | ||
| Standard Encapsulation | Bakelite, Metal cap | ||
| Target Gas | Hydrogen | ||
| Detection range | 100～1000ppm(H2 gas) | ||
| Standard Circuit Conditions | Loop Voltage | Vc | ≤24V DC |
| Heater Voltage | VH | 5.0V±0.1V AC or DC | |
| Load resistance | RL | Adjustable | |
| Sensor character under standard test conditions | Heater Resistance | RH | 30Ω±3Ω(room tem.) |
| Heater consumption | PH | ≤950mW | |
| Sensitivity | S | Rs(in air)/Rs(in 1000ppm H2)≥5 | |
| Output Voltage | Vs | 2.5V～4.0V (in 1000ppm H2) | |
| Concentration Slope | α | ≤0.6(R1000ppm/R400ppmH2) | |
| Standard test conditions | Tem. Humidity | 20℃±2℃；55%±5%RH | |
| Standard test circuit | Vc:5.0V±0.1V； VH:5.0V±0.1V | ||
| Preheat time | Over 48 hours | ||
| O2 content | 21%（not less than 18%） O2 concentration effects initial value, sensitivity and repeatability | ||
| Life span | 10 years | ||
H2 Hydrogen Sensor
MQ-8 Hydrogen Gas Sensor
₹1,416.00 Price With Tax
MQ-8 hydrogen gas sensor for H2 leak detection. High sensitivity semiconductor sensor ideal for industrial, safety, and DIY gas monitoring systems.
15 Days Warranty
This product comes with a 15-day warranty starting from the date of delivery. The warranty covers manufacturing defects only. If a defect is confirmed, the item will be replaced.
Warranty will not apply if:
- The product has been misused, dropped, or damaged.
- It has been exposed to water, fire, chemicals, or static discharge.
- It has been tampered with, soldered, or altered in any way.
The MQ-8 Hydrogen Gas Sensor is a semiconductor-type gas sensor designed for detecting hydrogen (H₂) concentrations in air. It is widely used in industrial safety systems, portable gas detectors, hydrogen leak alarms, and embedded monitoring applications.
The MQ-8 operates using a tin dioxide (SnO₂) sensitive layer whose conductivity changes when exposed to hydrogen gas. This change in resistance allows accurate detection of hydrogen within a specified ppm range. The sensor provides fast response, high sensitivity, and simple circuit integration, making it suitable for OEM manufacturers and electronic developers.
Hydrogen is highly flammable and diffuses rapidly in air. Early detection of hydrogen leaks is critical in fuel cell systems, battery charging stations, hydrogen storage facilities, and research laboratories. The MQ-8 offers a cost-effective solution for continuous hydrogen monitoring.
Key Features
- Sensitive to hydrogen gas
- Fast response and recovery
- Simple drive circuit
- Long service life
- Low cost solution
- Suitable for continuous monitoring
- Easy integration with microcontrollers
Ideal Applications
- Hydrogen leak alarm systems
- Fuel cell monitoring
- Battery charging rooms
- Industrial safety systems
- Research and laboratory projects
- DIY and IoT gas detection devices
Advantages of MQ-8 Sensor
Cost-effective hydrogen detection
Stable performance after proper preheating
Compatible with Arduino and embedded systems
Compact and easy-to-use design
Suitable for OEM and development projects
| Weight | 0.200 kg |
|---|---|
| Dimensions | 12 × 6 × 6 cm |
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