494 Series - SlimLine Lead-Free 0603 Fast-Acting Thin-Film Fuse

467
Roll Over to Zoom
Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse.

The 494 Series Fast-Acting SMF is an ultra small (0603 size) thin-film device designed for secondary protection of circuits used in space constrained applications such as hand-held portable electronic devices. This series is 100% lead-free and meets the requirements of the RoHS directive. New Halide-Free 494 Series fuses are available to order using the “HF” suffix. See Part Numbering section for additional information.

Features:

  • Compatible with lead-free solders and higher temperature profiles
  • High performance materials provide improved performance in elevated ambient temperature applications
  • Marked on top surface with code to allow ampere rating identification without testing
  • Low profile for height sensitive applications
  • Flat top surface for pick-and-place operations
  • Element-covering material is resistant to industry standard cleaning operations
  • Mounting pad and electrical performance are identical to Littelfuse 431 and 434 Series products
  • Alloy-based element construction provides superior inrush withstand characteristics (I2t) over ceramic or glass-based 0603 fuse products

Applications:

Secondary protection for space constrained applications:

  • Cell phones
  • Battery packs
  • Digital cameras
  • DVD players
  • Hard disk drives

Access specifications, certifications, check availability and order parts below

Catalog #Amps (A)VDC (V)VAC (V)Nominal Melting I2T (A2sec)Resistance
(Ω)
Interrupting RatingMin Operating Temp °CMax Operating Temp (°C)Marking CodeNom
Power
Dissipation
(W)
SamplesCompare
0494.2500.2532320.00140.5950A@32VDC-5590D0.0396Order
0494.3750.37532320.00350.3150A@32VDC-5590E0.048Order
0494.5000.532320.00870.189550A@32VDC-5590F0.0693Order
0494.7500.7532320.01710.118550A@32VDC-5590G0.0925Order
0494001.132320.02120.07850A@32VDC-5590H0.0674Order
0494002.232320.18910.03435A@32VDC-5590N0.1564Order
0494003.332320.24030.02235A@32VDC-5590P0.2251Order
0494004.432320.8410.01535A@32VDC-5590S0.2524Order
0494005.532320.90.010535A@32VDC-5590T0.306Order
049401.51.532320.07660.047535A@32VDC-5590K0.1074Order
049402.52.532320.20660.02735A@32VDC-5590O0.1903Order
049403.53.532320.43060.018535A@32VDC-5590R0.2286Order
04941.251.2532320.05180.061535A@32VDC-5590J0.1054Order
04941.751.7532320.09030.040535A@32VDC-5590L0.1378Order

Littelfuse_Phils_ISO9001_102407icon Philipines ISO 90012000

PhilsISO14001Certificateicon Phils ISO 14001 2004

pdf icon Littelfuse Fuse Accessories Selection Guide

A quick reference guide to selecting holders, blocks and clips for fuse applications...

pdf icon Fuse Selection Guide

A quick reference guide to selecting fuses for electronic applications...

pdf icon Product Selection Guide

Electronics Circuit Protection Product Selection Guide - A guide to selecting Littelfuse circuit protection components for electronic applications...

pdf icon Circuit Protection Technology Application Matrix

Littelfuse is the world leader in the design and manufacturing of fuses for the automotive, industrial, handheld, computer and telecom markets...

pdf icon Electronic Fuse Products Catalog

Littelfuse Electronic Fuse Products Catalog -- Miniature Fuse Products for Overcurrent Protection of Small Electrical and Electrical Applications...

pdf icon Fuseholder Selection Guide

pdf icon Fuseology Selection Guide

Littelfuse Fuseology Selection Guide