Littelfuse 422/422A 2410 Fast Acting SMD Thin Film Fuses

Littelfuse 422/422A 2410 Fast Acting SMD Thin Film Fuses are wire-in-air fuses designed to provide circuit protection to space-constrained applications. The automotive versions cater to compact auto electronics applications' secondary circuit protection needs. The wire-in-air design results in relatively high I2t in a 2410 size, excellent temperature stability, and performance reliability. These fuses are rated at 125V and 250V while operating within a -55°C to +125°C temperature range.


  • Fast-acting
  • Avoids nuisance opening due to high inrush and surge current inherent in the system
  • Suitable for harsh environments
  • Recognized to UL/CSA/NMX 248-1 and UL/CSA/NMX 248-14
  • Conforms to EN 60127-1 and EN 60127-7
  • Conforms to J60127-1 and J60127-7
  • Meets Littelfuse’s automotive qualification (422A components)
  • Reflow and wave solderable
  • Lead-free, Halogen-free, and RoHS compliant


  • 422 components
    • Industrial equipment
    • Backlight inverters
    • Power supplies
    • Telecom
    • Servers
    • Networking
    • Gaming systems
    • White goods
  • 422A (automotive) components
    • Li-Ion batteries
    • LED lighting automotive navigation systems
    • Battery Management Systems (BMS)
    • Clusters


  • -55°C to +125°C operating temperature range
  • 0.75A to 5A current range
  • 125V or 250V maximum voltage ratings
  • 0.0137Ω2 to 0.137Ω2 nominal resistance range
  • Materials
    • Epoxy resin body
    • Cu/Ni/Sn terminations (100% Pb-free)
Publicado: 2021-10-27 | Actualizado: 2023-08-02