Silicone gel plays a critical role in IGBT (Insulated Gate Bipolar Transistor) modules, primarily used to protect internal electronic components and enhance their reliability and durability. Below are the main applications and advantages of silicone gel in IGBT modules:
1. Electrical Insulation

Silicone gel exhibits excellent electrical insulation properties, effectively isolating electrodes and circuits within the IGBT module to prevent short circuits or leakage, ensuring stable operation.
2. Mechanical Protection

Silicone gel can absorb mechanical vibrations and shocks, reducing external stress on IGBT chips and bonding wires, thereby extending the module's lifespan.
3. Thermal Management

Silicone gel has good thermal conductivity, transferring heat generated by IGBT chips to the heat sink, helping the module maintain an optimal operating temperature and preventing overheating damage.
4. Moisture and Dust Resistance

Silicone gel fills gaps within the module, forming a protective layer that prevents moisture and dust ingress, avoiding corrosion or contamination of components and improving environmental adaptability.
5. Chemical Stability

Silicone gel offers excellent chemical stability, withstanding high temperatures, oxidation, and UV exposure, ensuring long-term performance stability of the IGBT module.
6. Flexibility and Compatibility

Silicone gel is flexible, accommodating thermal expansion and contraction of internal components to avoid stress-induced damage. It is also compatible with various materials, ensuring no adverse effects on internal components.