Noctua updated its range of ruggedised 24V industrialPPC fans. Using the novel NE-FD4 motor driver IC that complies with the Automotive Electronics Council's highly rigorous AEC-Q100 failure-mechanis... Noctua Automotive-compliant 24V IndustrialPPC Fans
I would just add that there are also 12V variants for same fans, just ordered last week 3 for my water-cooling rig: https://www.amazon.de/Noctua-18196-...=1&refRID=7Z6WV2PQHBQBB081771X&language=en_GB