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Bourns® Multifuse® PPTC Resettable Fuses

Almost anywhere there is a low-voltage power source and a load, a Multifuse® PPTC  Resettable Fuse can be used. The fact that these protection devices reset automatically sets them apart among circuit protection devices. Circuit designers know there are circumstances they have no control over which can result in potentially damaging overcurrent conditions.

  • Surface Mount (SMD), Radial Leaded (Through hole) and Axial Leaded (Strap) package options
  • Unlike one-time fuses, PPTCs do not need to be replaced
  • Overentcurrent events will not shut down the system
  • Fewer service calls mean lower warranty costs and better product quality
  • Avoids possible damage to the circuit by incorrect fuse replacement
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244 Products

    MF-R300-0-99
    Data Sheet
    MF-R300-0-99 Bourns
    PTC Resettable Fuse 3A(hold) 6A(trip) 30V 40A 2W 10.8s 0.02Ohm Radial 12 X 3 X 18.3mm Bag Automotive
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    Discontinued
    MF-R300-2
    Data Sheet
    MF-R300-2 Bourns
    PTC Resettable Fuse 3A(hold) 6A(trip) 30V 40A 2W 10.8s 0.02Ohm Radial 12 X 3 X 18.3mm T/R Automotive
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    In Stock: 9000
    Can Ship immediately 
    3,000
    $0.3695
    6,000
    $0.3446
    9,000
    $0.3437
    12,000
    $0.3355
    15,000
    $0.3347
    MF-R400
    Data Sheet
    MF-R400 Bourns
    PTC Resettable Fuse 4A(hold) 8A(trip) 30V 40A 2.5W 12.7s 0.01Ohm Radial 14.4 X 3 X 24.8mm Bulk Automotive
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    In Stock: 5657
    Can Ship immediately 
    50
    $0.4808
    500
    $0.3906
    1,000
    $0.3896
    3,000
    $0.3623
    6,000
    $0.3378
    MF-R400-0-99
    Data Sheet
    MF-R400-0-99 Bourns
    PTC Resettable Fuse 4A(hold) 8A(trip) 30V 40A 2.5W 12.7s 0.01Ohm Radial 14.4 X 3 X 24.8mm Bag Automotive
    VIEW PRODUCT
    Discontinued
    MF-R400-2
    Data Sheet
    MF-R400-2 Bourns
    PTC Resettable Fuse 4A(hold) 8A(trip) 30V 40A 2.5W 12.7s 0.01Ohm Radial 14.4 X 3 X 24.8mm T/R Automotive
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    4 Weeks
    1,000
    $0.3768
    3,000
    $0.3662
    6,000
    $0.3514
    9,000
    $0.3505
    12,000
    $0.3421
    MF-R400-2-99
    Data Sheet
    MF-R400-2-99 Bourns
    PTC Resettable Fuse 4A(hold) 8A(trip) 30V 40A 2.5W 12.7s 0.01Ohm Radial 14.4 X 3 X 24.8mm T/R Automotive
    VIEW PRODUCT
    In Stock: 1500
    Can Ship immediately 
    1
    $0.5251
    3,000
    $0.4774
    3,226
    $0.4519
    8,065
    $0.4386
    24,194 +
    $0.4131
    MF-R500
    Data Sheet
    MF-R500 Bourns
    PTC Resettable Fuse 5A(hold) 10A(trip) 30V 40A 3W 14.5s 0.01Ohm Radial 17.4 X 3 X 24.9mm Bulk Automotive
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    In Stock: 4798
    Can Ship immediately 
    50
    $0.5192
    500
    $0.4219
    1,000
    $0.3913
    3,000
    $0.3803
    6,000
    $0.3649
    MF-R500-0-99
    Data Sheet
    MF-R500-0-99 Bourns
    PTC Resettable Fuse 5A(hold) 10A(trip) 30V 40A 3W 14.5s 0.01Ohm Radial 17.4 X 3 X 24.9mm Bag Automotive
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    In Stock: 521
    Can Ship immediately 
    40
    $0.926
    50
    $0.917
    100
    $0.726
    250
    $0.635
    500
    $0.580
    MF-R500-2
    Data Sheet
    MF-R500-2 Bourns
    PTC Resettable Fuse 5A(hold) 10A(trip) 30V 40A 3W 14.5s 0.01Ohm Radial 17.4 X 3 X 24.9mm T/R Automotive
    VIEW PRODUCT
    In Stock: 1000
    Can Ship immediately 
    1
    $0.4425
    3,000
    $0.4023
    6,000
    $0.3860
    9,000
    $0.3758
    12,000
    $0.3749
    MF-R600
    Data Sheet
    MF-R600 Bourns
    PTC Resettable Fuse 6A(hold) 12A(trip) 30V 40A 3.5W 16s 0.005Ohm Radial 19.3 X 3 X 31.9mm Bulk Automotive
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    In Stock: 552
    Can Ship immediately 
    50
    $0.3834
    500
    $0.3430
    1,000
    $0.3303
    3,000
    $0.3257
    6,000
    $0.3194