The Fermion MEMS H2 Sensor is a compact hydrogen gas detection module using micro-electromechanical system (MEMS) technology. It provides qualitative measurement of hydrogen concentration from 0.1 to 1000 ppm via an analogue voltage output, with low power consumption, fast response, and a short preheat time.

At just 13 × 13 × 2.5 mm, the sensor is one of the smallest hydrogen detectors available, making it suitable for integration into space-constrained designs. It operates on 3.3–5V and interfaces easily with Arduino and other microcontrollers.

Key Features

• MEMS Technology – Ultra-compact sensor with low power and minimal heat generation
• Hydrogen Detection – 0.1 to 1000 ppm range
• Analogue Output – Simple voltage-based reading
• Low Power – Operating current <20 mA
• Fast Response – Quick detection and rapid recovery
• Long Lifespan – 5+ years in normal air conditions
• 3.3V and 5V Compatible – Works with Arduino, ESP32, and other platforms

Specifications

• Gas Detected – Hydrogen (H2)
• Detection Range – 0.1–1000 ppm
• Operating Voltage – 3.3–5V
• Operating Current – <20 mA
• Output Signal – Analogue voltage
• Sensitivity – R0 (air) / Rs (200 ppm H2) ≥ 5
• Operating Temperature – -10°C to 50°C
• Operating Humidity – 15–90% RH (non-condensing)
• Lifespan – ≥5 years (in air)
• Dimensions – 13 × 13 × 2.5 mm

Ideal For

• Hydrogen leak detection and alarms
• Fuel cell vehicle emission monitoring
• Industrial safety and gas monitoring
• Air quality sensing applications

Package Contents

• 1× Fermion MEMS H2 Sensor (Breakout)
• 1× 2.54 mm Pitch Header Pin

Resources

• Product Wiki