SIGEL 1875 Self-Healing Silicone Gel Potting Solution for MAF Sensor
In automotive electronic systems, the Mass Air Flow (MAF) sensor can be regarded as the engine’s respiratory monitor. It real-time measures the intake air flow and provides critical data for the ECU to precisely calculate fuel injection quantity. Once this precision component fails due to moisture ingress, thermal shock or mechanical stress, it will lead to increased fuel consumption and reduced power at the mild level; in severe cases, it triggers the engine warning light or even vehicle breakdown. However, many engineers overlook a core point during material selection: the performance of potting material directly determines the service life limit of the sensor. Four Major Technical Challenges for MAF Sensor Potting The operating environment of MAF sensors is far harsher than imagined. Under the hood, temperature fluctuates drastically from -40℃ to 150℃, accompanied by multiple hazards such as oil vapor, road salt spray and high-pressure water washing. This sets stringent requirements for potting materials: 1. High-level Sealing & Protection Moisture is the top killer of sensor circuits. Even tiny water vapor penetration will cause signal drift, corrosion and short circuit. 2. Excellent Thermal Shock Resistance Traditional rigid potting compounds easily generate internal stress under temperature cycling. Long-term stress may cause solder joint cracking or encapsulation delamination. 3. Critical Stress Buffering Capacity The internal MEMS chips and precision resistor networks of sensors are extremely sensitive to mechanical stress. The potting material must possess sufficient flexibility to absorb vibration and impact. 4. Uncompromised Long-Term Reliability The material must not experience oil bleeding, yellowing or hardening during long-term service; otherwise, sensor signal accuracy and response speed will be directly affected. SIGEL 1875: Self-Healing Silicone Gel Specially Developed for High-Reliability Sensor Encapsulation To address the above challenges, ELAPLUS launches SIGEL 1875 transparent two-component self-healing silicone gel. With fundamental innovation in material science, it delivers…
