0678 Surface-Mount Fuses

Bel Fuse 0678 Surface-Mount Fuses feature two types: fast-blow fuses and enhanced-breaking capability brick fuses. These fuses operate from 500mA to 5A for the 0678D series and from 500mA to 40A for the 0678H series. Bel Fuse 0678 Surface-Mount Fuses are compatible with +260ºC, IR Pb-free solder process. These fuses are constructed in 3912 case sizes with a ceramic tube/end cap. Bel Fuse 0678 Surface-Mount Fuses are suitable for voltage regulator modules, PC servers, office electronic equipment, power supplies, and industrial, medical, and mass storage systems.

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Qty. RoHS ECAD Model Series
Product
Fuse Type
Current Rating
Voltage Rating AC
Voltage Rating DC
Interrupt Rating
Fuse Size/Group
Minimum Operating Temperature
Maximum Operating Temperature
Packaging
Resistance
Bel Fuse Surface Mount Fuses 3939 Surface Mt Fuse 3.15A
Datasheet
3.117In Stock
Min.: 1
Mult.: 1
: 2.000

0678D Surface Mount Ceramic Fuses Fast Blow 3.15 A 350 VAC 125 VDC 100 A, 2 kA 3912 - 55 C + 125 C Reel, Cut Tape 35 mOhms
Bel Fuse Surface Mount Fuses 3937 Surface Mt Fuse 2A
Datasheet
510In Stock
Min.: 1
Mult.: 1
: 2.000

0678D Surface Mount Ceramic Fuses Fast Blow 2 A 350 VAC 125 VDC 100 A, 2 kA 3912 - 55 C + 125 C Reel, Cut Tape 59 mOhms
Bel Fuse Surface Mount Fuses 3915 Surface Mt Fuse 1A
Datasheet
2.014In Stock
Min.: 1
Mult.: 1
: 2.000

0678H Surface Mount Fuses Fast Blow 1 A 250 VAC 125 VDC 300 A, 2 kA 3912 - 55 C + 125 C Reel, Cut Tape 210 mOhms
Bel Fuse Surface Mount Fuses 3918 Surface Mt Fuse 2A
Datasheet
974In Stock
Min.: 1
Mult.: 1
: 2.000

0678H Surface Mount Fuses Fast Blow 2 A 250 VAC 125 VDC 300 A, 2 kA 3912 - 55 C + 125 C Reel, Cut Tape 59 mOhms
Bel Fuse Surface Mount Fuses 3917 Surface Mt Fuse 1.6A
Datasheet
208In Stock
Min.: 1
Mult.: 1
: 2.000

0678H Surface Mount Fuses Fast Blow 1.6 A 250 VAC 125 VDC 300 A, 2 kA 3912 - 55 C + 125 C Reel, Cut Tape 80 mOhms
Bel Fuse Surface Mount Fuses 3920 Surface Mt Fuse 3.15A
Datasheet
1.473In Stock
Min.: 1
Mult.: 1
: 2.000

0678H Surface Mount Fuses Fast Blow 3.15 A 250 VAC 125 VDC 300 A, 2 kA 3912 - 55 C + 125 C Reel, Cut Tape 35 mOhms
Bel Fuse Surface Mount Fuses 3919 Surface Mt Fuse 2.5A
Datasheet
433In Stock
Min.: 1
Mult.: 1
: 2.000

0678H Surface Mount Fuses Fast Blow 2.5 A 250 VAC 125 VDC 300 A, 2 kA 3912 - 55 C + 125 C Reel, Cut Tape 43 mOhms
Bel Fuse Surface Mount Fuses 3912 Surface Mt Fuse 500mA
Datasheet
2.904In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.000
0678H Surface Mount Fuses Fast Blow 500 mA 250 VAC 125 VDC 300 A, 2 kA 3912 - 55 C + 125 C Reel, Cut Tape, MouseReel 660 mOhms
Bel Fuse Surface Mount Fuses 3924 Surface Mt Fuse 8A
Datasheet
5.041In Stock
Min.: 1
Mult.: 1
: 2.000

0678H Surface Mount Fuses Fast Blow 8 A 250 VAC 125 VDC 100 A, 1.5 kA 3912 - 55 C + 125 C Reel, Cut Tape 10 mOhms
Bel Fuse Surface Mount Fuses 3922 Surface Mt Fuse 5A
Datasheet
3.355In Stock
Min.: 1
Mult.: 1
: 2.000

0678H Surface Mount Fuses Fast Blow 5 A 250 VAC 125 VDC 300 A, 2 kA 3912 - 55 C + 125 C Reel, Cut Tape 16 mOhms
Bel Fuse Surface Mount Fuses 3927 Surface Mt Fuse 20A
Datasheet
3.935In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

0678H Surface Mount Fuses Fast Blow 20 A 250 VAC 125 VDC 100 A, 1.5 kA 3912 - 55 C + 125 C Reel, Cut Tape, MouseReel 2.8 mOhms
Bel Fuse Surface Mount Fuses 3930 Surface Mt Fuse 40A
Datasheet
8.811In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

0678H Surface Mount Fuses Fast Blow 40 A 250 VAC 125 VDC 100 A, 1 kA 3912 - 55 C + 125 C Reel, Cut Tape, MouseReel 1.5 mOhms
Bel Fuse Surface Mount Fuses 3931 Surface Mt Fuse 500mA
Datasheet
1.988In Stock
Min.: 1
Mult.: 1
: 2.000

0678D Surface Mount Ceramic Fuses Fast Blow 500 mA 350 VAC 125 VDC 100 A, 2 kA 3912 - 55 C + 125 C Reel, Cut Tape 660 mOhms
Bel Fuse Surface Mount Fuses 3934 Surface Mt Fuse 1A
Datasheet
266In Stock
4.000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

0678D Surface Mount Ceramic Fuses Fast Blow 1 A 350 VAC 125 VDC 100 A, 2 kA 3912 - 55 C + 125 C Reel, Cut Tape, MouseReel 210 mOhms
Bel Fuse Surface Mount Fuses 3913 Surface Mt Fuse 630 mA
Datasheet
1.117In Stock
Min.: 1
Mult.: 1
: 2.000

0678H Surface Mount Fuses Fast Blow 630 mA 250 VAC 125 VDC 300 A, 2 kA 3912 - 55 C + 125 C Reel, Cut Tape 540 mOhms
Bel Fuse Surface Mount Fuses 3916 Surface Mt Fuse 1.25A
Datasheet
1.014In Stock
Min.: 1
Mult.: 1
: 2.000

0678H Surface Mount Fuses Fast Blow 1.25 A 250 VAC 125 VDC 300 A, 2 kA 3912 - 55 C + 125 C Reel, Cut Tape 100 mOhms
Bel Fuse Surface Mount Fuses 3921 Surface Mt Fuse 4A
Datasheet
2.956In Stock
Min.: 1
Mult.: 1
: 2.000

0678H Surface Mount Fuses Fast Blow 4 A 250 VAC 125 VDC 300 A, 2 kA 3912 - 55 C + 125 C Reel, Cut Tape 21 mOhms
Bel Fuse Surface Mount Fuses 3923 Surface Mt Fuse 6.3A
Datasheet
2.623In Stock
Min.: 1
Mult.: 1
: 2.000

0678H Surface Mount Fuses Fast Blow 6.3 A 250 VAC 125 VDC 100 A, 1.5 kA 3912 - 55 C + 125 C Reel, Cut Tape 13 mOhms
Bel Fuse Surface Mount Fuses 3925 Surface Mt Fuse 10A
Datasheet
647In Stock
8.000Expected 9/24/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

0678H Surface Mount Fuses Fast Blow 10 A 250 VAC 125 VDC 100 A, 1.5 kA 3912 - 55 C + 125 C Reel, Cut Tape, MouseReel 6 mOhms
Bel Fuse Surface Mount Fuses 3926 Surface Mt Fuse 15A
Datasheet
1.148In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

0678H Surface Mount Fuses Fast Blow 15 A 250 VAC 125 VDC 100 A, 1.5 kA 3912 - 55 C + 125 C Reel, Cut Tape, MouseReel 4.1 mOhms
Bel Fuse Surface Mount Fuses 3928 Surface Mt Fuse 25A
Datasheet
1.249In Stock
6.000Expected 9/17/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

0678H Surface Mount Fuses Fast Blow 25 A 250 VAC 125 VDC 100 A, 1 kA 3912 - 55 C + 125 C Reel, Cut Tape, MouseReel 2.3 mOhms
Bel Fuse Surface Mount Fuses 3929 Surface Mt Fuse 30A
Datasheet
1.694In Stock
10.000Expected 10/27/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

0678H Surface Mount Fuses Fast Blow 30 A 250 VAC 125 VDC 100 A, 1 kA 3912 - 55 C + 125 C Reel, Cut Tape, MouseReel 1.5 mOhms
Bel Fuse Surface Mount Fuses 3932 Surface Mt Fuse 630mA
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 2.000
Mult.: 2.000
: 2.000

0678D Surface Mount Ceramic Fuses Fast Blow 630 mA 350 VAC 125 VDC 100 A, 2 kA 3912 - 55 C + 125 C Reel 540 mOhms
Bel Fuse Surface Mount Fuses 3933 Surface Mt Fuse 800mA
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 2.000
Mult.: 2.000
: 2.000

0678D Surface Mount Ceramic Fuses Fast Blow 800 mA 350 VAC 125 VDC 100 A, 2 kA 3912 - 55 C + 125 C Reel 380 mOhms
Bel Fuse Surface Mount Fuses 3935 Surface Mt Fuse 1.25A
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 2.000
Mult.: 2.000
: 2.000

0678D Surface Mount Ceramic Fuses Fast Blow 1.25 A 350 VAC 125 VDC 100 A, 2 kA 3912 - 55 C + 125 C Reel 100 mOhms