Automotive applications can be a challenging environment for electronics, being housed in a hot, oily, high vibration engine bay or equally harsh road-wheel environment, as is the case for braking systems. Again, hybrids provide a tough, compact solution. Both chip-and-wire and solder surface-mount technologies are used, depending on the application. The picture shows an airflow meter utilising an Extec manufactured Platinum flow sensor and conditioning electronics, silicone sealed and housed in a sealed plastic casing. Extec has manufactured tens of thousands of these units at prices competitive with far-east manufacturing prices. Extec’s Thick Film on steel pressure sensors have been approved by Honeywell and are to be found in HGV braking systems across Europe.