As EV and hydrogen energy systems expand, early warning of battery thermal runaway has become a critical safety focus. Sensirion introduces the STC42A automotive‑grade hydrogen sensor, designed to detect hydrogen release – the earliest indicator of battery thermal runaway, often before temperature spikes or fire appears.

China’s new GB 38031‑2025 standard, effective July 1, tightens safety requirements, pushing automakers to strengthen battery monitoring.

The STC42A uses thermal conductivity detection, measures 0–40 vol% hydrogen, operates from -40°C to 105°C, delivers a 1‑second response time with 16‑bit resolution, and runs on a 3.15–5.25V supply via I²C. The compact package measures 3.5×3×1mm.

An evaluation kit (SEK-STC42A) is available for quick prototyping. The sensor is suited for EVs, fuel‑cell vehicles, stationary storage, and hydrogen production/logistics leak detection.

ICgoodFind: Sensirion’s STC42A offers fast, reliable hydrogen sensing for thermal runaway prevention – a key enabler for next‑gen EV safety systems.