SB040302025 – HYDROGEN SENSOR SCHEMATIC BLOCK

This schematic block features the TCIXTMA1, a digital hydrogen (H₂) gas sensor from Infineon’s XENSIV line. It uses thermal-conductivity sensing to reliably detect hydrogen in air, offering robust operation even in challenging industrial or automotive conditions. Because it outputs a fully factory-calibrated digital signal via I²C, this sensor simplifies system design and streamlines integration into safety, fuel-cell, and leak-detection systems.

Packaged in a compact, automotive-grade MEMS-style module, the breakout provides ready access to power, I²C lines, and measurement pins. Its very low power consumption, fast response time, and high stability make it a solid choice for long-term hydrogen monitoring.

Infineon’s TCI sensor family is valued in high-reliability applications due to its resistance to poisoning, minimal drift, and ability to maintain accuracy over many years.

Key Features:

• Thermal-conductivity-based hydrogen sensing (no chemical reaction required)
• Fully factory-calibrated with temperature, pressure, and humidity compensation
• I²C digital interface for easy microcontroller integration
• Ultra-low power consumption (~112 µA at 1 measurement/s)
• Response time: < 100 ms
• Measuring range: 0 to 16 vol% H₂
• Accuracy: ± 0.34 vol% H₂ typical
• Supply voltage: 3.3 V
• Operating temperature: –40 °C to +105 °C
• Package: PG‑DSOSP‑14‑84
• Long lifetime and low offset drift — up to 15 years typical

Typical Applications:

• Hydrogen leak detection (fuel-cell vehicles, refueling stations)
• Stationary fuel cell systems and electrolyzers
• Hydrogen storage and energy storage systems
• Safety monitoring in industrial hydrogen environments
• Battery systems (e.g., hydrogen-based backup / storage)
• Hydrogen economy infrastructure and research platforms

By integrating this Quickboards schematic block, engineers can accelerate development of robust hydrogen-sensing systems, minimize analog front-end complexity, and leverage a high-reliability, automotive-grade sensor ready for production-scale deployment.