Littelfuse 437 Series SMT Fuses

Littelfuse 437 Series SMT Fuses protect circuits against overcurrent in ambient high-temperature situations. These ceramic fuses operate bewteen -55° and +150°C temperatures, providing both high I²t values and inrush current withstand capabilities. The halogen-free 437 series gives users a high performance reliability, with models ranging from 250mA to 8A current rating. These Littelfuse fast-acting, surface mount fuses are suitable for both leaded and lead-free reflow as well as wave soldering. 437 series fuses are ideal for servers, printers, scanners, data modems, LCD displays, and LED lighting applications.

Features

  • Ceramic, provides high inrush current with stand capabilities
  • Provides overcurrent protection in high-ambient-temperature situations
  • Lead-free, halogen-free, and RoHS-compliant
  • Suitable for leaded adn lead-free reflow / wave soldering
  • 250mA to 8A current range
  • 0.008Ω to 2.290Ω nominal resistance range
  • -55°C to +150°C operating temperature range
  • High I2t values

Applications

  • LED lighting
  • Printers
  • Scanners
  • Data modems
  • Servers
  • LCD displays

Temperature Re-rating Curve

Chart - Littelfuse 437 Series SMT Fuses
Published: 2018-10-24 | Updated: 2023-02-28