1UF/400V CAPACITOR

The 105J / 400V Metallic Film Capacitor is a fundamental component for ensuring the stability and compliance of the high-voltage circuitry in the inverter.

Here are its core specifications and relevance:

• Type: Film Capacitor, typically Polyester (PET) or Polypropylene (PP), known for high stability, low dissipation factor, and excellent self-healing properties.

• Capacitance:1.0uF

• Tolerance: 5%

• Voltage Rating:400 V 

• Function in Inverter/Compliance: This capacitor is essential for filtering, decoupling, and snubbing on the high DC bus voltage rail (which operates near 380VDC.

  • Filtering: It smooths out high-frequency ripple created by the MOSFET/IGBT switching.

  • Snubbing: It absorbs energy spikes and high-frequency noise, which is critical for protecting the semiconductors and reducing electromagnetic interference (EMI), thus helping the system meet regulatory Standards (UL, CE).

• Safety Relevance: Using a high-quality, self-healing film type ensures reliability, preventing catastrophic failures that could violate the Protection requirements