MQ-8 Hydrogen Gas Sensor
The MQ-8 Hydrogen Gas Sensor is designed to detect hydrogen (H2) gas concentrations in the air, with a measurement range of 100 to 10,000 ppm. It offers a simple implementation process for both heater drive and measurement circuits, making it user-friendly and easy to integrate. Built for reliability and long-term stability, the sensor ensures consistent performance over time. Ideal for gas leakage detection systems, the MQ-8 is particularly effective in monitoring and identifying hydrogen gas leaks in a wide range of environments, ensuring safety and efficiency.
Features
- High Sensitivity (MQ-8 Sensor)
- Stable and Long Life
- Detection Range: 100 – 10,000 ppm H2 (Hydrogen)
- Heater Voltage: 5.0V
- Dimensions: 18mm Diameter, 17mm High excluding pins, Pins – 6mm High
Specification:
| Model Type | MQ-8 |
|---|---|
| Sensor Type | Semiconductor |
| Standard Encapsulation | Bakelite, Metal Cap |
| Target Gas | Hydrogen |
| Detecting Range | 100～1000ppm(H2 gas) |
| Output Voltage | 2.5V～4.0V（in 1000ppm H2） |
| Load Resistance | Adjustable |
| Heater Voltage | 5.0V AC or DC |
| Sensitivity | Rs(in air)/Rs(in 1000ppm H2)≥5 |
| Tem. Humidity: | 20℃±2℃；55%±5%RH |
| Length (mm) | 24 |
| Diameter (mm) | 19 |
| Weight (gm) | 8 |
| Shipping Weight | 0.02 kg |
| Shipping Dimensions | 2 × 2 × 2 cm |
Package Includes:
1 x MQ8 Hydrogen Gas Sensor
Datasheet:-
https://cdn.sparkfun.com/datasheets/Sensors/Biometric/MQ-8%20Ver1.3%20-%20Manual.pdf
MQ-8 Hydrogen Gas Sensor Overview
The MQ-8 Hydrogen Gas Sensor is a precision module designed for reliable detection of hydrogen (H2) gas in ambient air. With a stable heater drive and easy-to-read analog output, it’s ideal for early leak warnings and safety monitoring in industrial, laboratory, and educational setups.
Key Features of MQ-8 Hydrogen Gas Sensor
- High hydrogen sensitivity: Quickly detects low-level H2 concentrations for early leak warnings
- Stable and durable: Long operational life with minimal performance drift
- Simple integration: 5 V heater drive and analog output streamline circuit design
- Compact footprint: 18 mm diameter and 17 mm height (excluding pins) for space-limited installations
- Wide detection range: Effective from 100 ppm up to 10 000 ppm hydrogen levels
- Authorized unit with fast shipping: Genuine MQ-8 sensors dispatched quickly from Zbotic
Applications and Use Cases
- Hydrogen leak detection in fuel cell systems and refueling stations
- Safety monitoring in chemical processing and storage facilities
- Real-time gas analysis in research laboratories
- Environmental monitoring of industrial hydrogen emissions
- Educational robotics and electronics projects focused on gas sensing
How to Use MQ-8 Hydrogen Gas Sensor
Mount the MQ-8 on a breakout board or breadboard, supply 5 V to the heater pin, and connect the analog output to an ADC channel on your microcontroller. After powering up, allow a short warm-up period for the heater to stabilize, then read the output voltage and apply your calibration curve to determine hydrogen concentration.
Why Buy from Zbotic?
- Genuine Products: All items sourced from authorized distributors
- Fast Shipping: Orders ship within 24 hours with tracking (non backordered products)
- Free Shipping: Free delivery on qualifying orders
- COD Available: Cash on Delivery, UPI, cards, net banking
- Technical Support: Expert help for setup and troubleshooting
- Easy Returns: Hassle-free replacement for defective products
Frequently Asked Questions
How do I interface the MQ-8 sensor with a microcontroller?
Connect the heater pin to a stable 5 V supply and the analog output to an ADC input. After a brief warm-up, read the voltage and map it to hydrogen concentration using a calibration curve.
What is the recommended warm-up time before taking measurements?
Allow the MQ-8 to heat up for at least 2–3 minutes after power-up to achieve stable readings and consistent sensitivity.
Can the MQ-8 detect gases other than hydrogen?
The MQ-8 is optimized for hydrogen detection. It may show minor sensitivity to some reducing gases, but for accurate H2 monitoring, calibration and awareness of cross-sensitivity are recommended.
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Read More →Technical Specifications
| Model | MQ-8 |
|---|---|
| SKU | AI3535 |
| Weight | 0.00585 kg |
| Availability | Out of Stock |
Applications & Use Cases
The MQ-8 Hydrogen Gas Sensor is a versatile gas and dust sensor used across a wide range of applications including air quality monitoring, gas leak detection, industrial safety, HVAC systems, and environmental monitoring.
Common use cases:
- Building a gas leak alarm for LPG/methane
- Monitoring indoor air quality (CO2, VOC)
- Dust monitoring in a workshop
This product is ideal for environmental engineers, safety professionals, and IoT developers.
Technical Tip: MQ-series sensors need a warm-up period (24-48 hours for first use). Calibrate in clean air for accurate readings.
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components
Shivam Rao (verified owner) –
Perfect MQ-8 Hydrogen Gas Sensor for my automation project. Integrates seamlessly with my microcontroller.
Bharat Ghosh (verified owner) –
Decent MQ-8 Hydrogen Gas Sensor for the price. Requires proper wiring but works well once set up.
Piyush Desai (verified owner) –
Great MQ-8 Hydrogen Gas Sensor. Using it in my smart agriculture system. Reliable measurements every time.
Arjun Yadav (verified owner) –
Decent MQ-8 Hydrogen Gas Sensor for the price. Requires proper wiring but works well once set up.
Chitra Yadav (verified owner) –
Bought this MQ-8 Hydrogen Gas Sensor for my college project. Accurate readings, easy to code. Very happy!
Raj Kapoor (verified owner) –
Good MQ-8 Hydrogen Gas Sensor. Works as described. Calibration needed some patience but results are good.
Mahesh Sen (verified owner) –
Average MQ-8 Hydrogen Gas Sensor. Readings fluctuate a bit. Works for rough measurements.
Arun Thakur –
Perfect for my weather station. This MQ-8 Hydrogen Gas Sensor gives consistent readings day and night.
Mukesh Mukherjee (verified owner) –
Superb MQ-8 Hydrogen Gas Sensor! Using it in my environmental monitoring system. Very reliable data.
Vishal Parekh (verified owner) –
Love this MQ-8 Hydrogen Gas Sensor. Response time is fast and readings are stable.
Vivek Kumar (verified owner) –
Very satisfied with this MQ-8 Hydrogen Gas Sensor. Library support is good and it’s easy to interface.
Pooja Reddy –
Great MQ-8 Hydrogen Gas Sensor. Using it in my smart agriculture system. Reliable measurements every time.
Suresh Ghosh (verified owner) –
Very satisfied with this MQ-8 Hydrogen Gas Sensor. Library support is good and it’s easy to interface.
Tushar Kapoor (verified owner) –
Great MQ-8 Hydrogen Gas Sensor. Using it in my smart agriculture system. Reliable measurements every time.
Dinesh Chopra –
Average MQ-8 Hydrogen Gas Sensor. Readings fluctuate a bit. Works for rough measurements.
Dhruv Pillai –
Love this MQ-8 Hydrogen Gas Sensor. Response time is fast and readings are stable.
Vijay Srivastava (verified owner) –
Average MQ-8 Hydrogen Gas Sensor. Readings fluctuate a bit. Works for rough measurements.
Hemant Rajan (verified owner) –
Excellent MQ-8 Hydrogen Gas Sensor! Readings are accurate and consistent. Perfect for my project.
Vijay Kumar (verified owner) –
Good MQ-8 Hydrogen Gas Sensor. Works as described. Calibration needed some patience but results are good.
Mayank Chatterjee (verified owner) –
This MQ-8 Hydrogen Gas Sensor works great with Arduino. Easy to wire up and code.
Aditya Thakur –
This MQ-8 Hydrogen Gas Sensor is excellent for the price. My data logging project is working perfectly now.
Lalit Mittal (verified owner) –
Average MQ-8 Hydrogen Gas Sensor. Readings fluctuate a bit. Works for rough measurements.
Deepika Joshi (verified owner) –
Excellent sensitivity and range on this MQ-8 Hydrogen Gas Sensor. Works better than I expected.