0494 Series Fast-Acting SMF
    
                                                          
    The 494 Series Fast-Acting SMF is an ultra small (0603 size) thin-film device.
    
                                                                                      
      
                                                                                                                      
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                                            Brand：
                                            Littelfuse                                        
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                                            Classification：
                                            SMD Fuse                                        
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                                            Voltage：
                                            32V                                        
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                                            Current：
                                            0.25A-5A                                        
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    Description:
    　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 leadfree 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 pickand-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
    ? Digital cameras
    ? Hard disk drives
    ? Battery packs
    ? DVD players



    Ampere Rating
    (A)
    Amp Code
    Max Voltage Rating
    (V)
    Interruping Rating
    Nominal Cold Resistance
    (Ohms)
    Nominal Melting I2t
    (A2sec)
    Nominal Voltage Drop
    （mV）
    Nominal Power Dissipation
    （W）
    0.250.25032
    50A @32V AC/DC
    0.5450
    		0.0030158.56
    0.0396
    0.375
    .375
    32
    0.2900
    0.0053
    128.03
    0.0480
    0.500
    .500
    32
    0.1870
    0.0087
    115.71
    0.0579
    0.750
    .750
    32
    0.1170
    0.0171
    107.33
    0.0805
    1.00
    001.
    32
    0.0710
    0.0212
    89.10
    0.0891
    1.25
    1.25
    32
    35A @32V AC/DC
    0.0530
    0.0518
    84.32
    0.1054
    1.40
    01.4
    32
    0.049
    0.05529
    74.84
    0.1048
    1.50
    01.5
    32
    0.0410
    0.0766
    81.14
    0.1217
    1.75
    1.75
    32
    0.0320
    0.0903
    78.75
    0.1378
    2.00
    002.
    32
    0.0300
    0.1103
    78.22
    0.1564
    2.50
    02.5
    32
    0.0220
    0.1440
    76.10
    0.1903
    3.00
    003.
    32
    0.0180
    0.2403
    75.04
    0.2251
    3.15
    3.15
    32
    0.017
    0.27405
    63.78
    0.2009
    3.50
    03.5
    32
    0.0150
    0.4306
    74.25
    0.2599
    4.00
    004.
    32
    0.0130
    0.5760
    73.72
    0.2949
    5.00
    005.
    32
    0.0090
    0.9000
    72.71
    0.3635

                                    
    
                                
                                
    
                                    
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