MQ5 Gas Sensor

The MQ5 Gas Sensor is a semiconductor gas detection sensor designed for detecting combustible gases such as LPG and methane/natural gas. It is commonly used in gas leakage detection, safety systems and electronic monitoring projects. The sensor uses a heated sensing element whose resistance changes according to the concentration of combustible gas present in the surrounding air.

Technical Specifications:

• Sensor Model: MQ-5
• Sensor Type: Semiconductor Gas Sensor
• Target Gases: LPG and Methane (CH₄)
• Detection Range: 300–10,000 ppm
• Circuit Voltage: 5V DC
• Heater Voltage: 5V AC/DC
• Heater Resistance: Approx. 30Ω ±3Ω
• Heater Consumption: ≤950mW
• Construction: Bakelite base with metal mesh cap

Features:

• High sensitivity to LPG and natural gas
• Fast response to combustible gases
• Stable sensing characteristics
• Simple interface with external circuits
• Metal mesh protects the sensing element
• Suitable for continuous gas monitoring
• Compact through-hole package

Applications:

• LPG leakage detectors
• Natural gas monitoring systems
• Domestic gas alarms
• Industrial gas leakage detection
• Safety and warning systems
• Gas monitoring equipment
• Arduino and microcontroller projects
• Home and industrial automation