Micro™/TR3® Fuses

Littelfuse Micro™/TR3® Fuses offer a 0.002 to 5A operating current, 125V maximum voltage rating, and 10,000A interrupting rating. Littelfuse Micro/TR3 fuses include high-reliability, very fast-acting subminiature radial leaded fuses. 

Results: 144
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Qty. RoHS ECAD Model Series
Product
Current Rating
Voltage Rating AC
Fuse Type
Body Style
Voltage Rating DC
Interrupt Rating
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Fuse Size/Group
Minimum Operating Temperature
Maximum Operating Temperature
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Packaging
Littelfuse Fuses with Leads - Through Hole 125V .031A MICRO Very Fast Acting
Datasheet
8In Stock
Min.: 1
Mult.: 1
No
272 PCB Mount Fuses 31 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 125 C 16 Ohms Bulk
Littelfuse Fuses with Leads - Through Hole 125V .015A MICRO Very Fast Acting
Datasheet
26In Stock
Min.: 1
Mult.: 1
No
273 PCB Mount Fuses 15 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 85 C 57.8 mOhms Bulk
Littelfuse Fuses with Leads - Through Hole 125V 2A MICRO Very Fast Acting
Datasheet
459Expected 2026/03/26
Min.: 1
Mult.: 1

272 PCB Mount Fuses 2 A 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 125 C 42.5 mOhms Bulk
Littelfuse Fuses with Leads - Through Hole 125V 2A MICRO Very Fast Acting
Datasheet
2,257On Order
Min.: 1
Mult.: 1

273 PCB Mount Fuses 2 A 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 85 C 42.5 mOhms Bulk
Littelfuse Fuses with Leads - Through Hole 125V 4A MICRO Very Fast Acting
Datasheet
Product Comments
339On Order
Min.: 1
Mult.: 1

273 PCB Mount Fuses 4 A 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 85 C 20.2 mOhms Bulk
Littelfuse Fuses with Leads - Through Hole 125V 5A MICRO Very Fast Acting
Datasheet
Product Comments
1,750On Order
Min.: 1
Mult.: 1

273 PCB Mount Fuses 5 A 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 85 C 280 Ohms Bulk
Littelfuse Fuses with Leads - Through Hole 125V .062A MICRO Very Fast Acting
Datasheet
6Expected 2026/03/12
Min.: 1
Mult.: 1

272 PCB Mount Fuses 62 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 125 C 2.55 Ohms Bulk
Littelfuse Fuses with Leads - Through Hole 125V .1A MICRO Very Fast Acting
Datasheet
91Expected 2026/03/12
Min.: 1
Mult.: 1

272 PCB Mount Fuses 100 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 125 C 1.38 Ohms Bulk
Littelfuse Fuses with Leads - Through Hole 125V V/FA MICRO .400A
Datasheet
5Expected 2026/03/05
Min.: 1
Mult.: 1

273 PCB Mount Fuses 400 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 85 C 227 mOhms Bulk
Littelfuse Fuses with Leads - Through Hole 125V .75A MICRO Very Fast Acting
Datasheet
199Expected 2026/03/05
Min.: 1
Mult.: 1

273 PCB Mount Fuses 750 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 85 C 293 mOhms Bulk
Littelfuse Fuses with Leads - Through Hole 125V V/FA MICRO 5A
Datasheet
71Expected 2026/03/27
Min.: 1
Mult.: 1

273 PCB Mount Fuses 5 A 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 85 C 280 Ohms Bulk
Littelfuse Fuses with Leads - Through Hole 125V 1.5A MICRO Very Fast Acting
Datasheet
186Expected 2026/03/12
Min.: 1
Mult.: 1

273 PCB Mount Fuses 1.5 A 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 85 C 57.8 mOhms Bulk
Littelfuse Fuses with Leads - Through Hole 2A, 125V FM02A Mil Micro Fuse
Datasheet
8Expected 2026/04/02
Min.: 1
Mult.: 1

274 Hi-Rel Fuses 2 A 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 85 C 42.5 mOhms Bulk
Littelfuse Fuses with Leads - Through Hole 125V .2A w/ Radial Leads
Datasheet
5Stock Available
More Info Available
Min.: 5
Mult.: 5
No
269 PCB Mount Fuses 200 mA 125 VAC Fast Blow Leaded Fuses 125 VDC Radial MICRO Bulk
Littelfuse Fuses with Leads - Through Hole 125V .3A w/ Radial Leads
Datasheet
35Stock Available
More Info Available
Min.: 5
Mult.: 5
No
269 PCB Mount Fuses 300 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 125 C 1.25 Ohms Bulk
Littelfuse Fuses with Leads - Through Hole 125V .4A w/ Radial Leads
Datasheet
30Stock Available
More Info Available
Min.: 5
Mult.: 5
No
269 PCB Mount Fuses 400 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 125 C 227 mOhms Bulk
Littelfuse Fuses with Leads - Through Hole 125V 5A MICRO Very Fast Acting
Datasheet
25Expected 2026/05/26
Min.: 1
Mult.: 1

274 Hi-Rel Fuses 5 A 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 85 C 280 Ohms Bulk
Littelfuse Fuses with Leads - Through Hole FUSE 125V V/FA HI REL MICRO FUSE .002A
Datasheet
Non-Stocked Lead-Time 27 Weeks
Min.: 10
Mult.: 5

262 PCB Mount Fuses 2 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 125 C 46 mOhms Bulk
Littelfuse Fuses with Leads - Through Hole FUSE 125V V/FA HI REL MICRO FUSE .010A
Datasheet
Non-Stocked Lead-Time 27 Weeks
Min.: 10
Mult.: 5

262 PCB Mount Fuses 10 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 125 C 94 Ohms Bulk
Littelfuse Fuses with Leads - Through Hole FUSE 125V V/FA HI REL MICRO FUSE .031A
Datasheet
Non-Stocked Lead-Time 27 Weeks
Min.: 10
Mult.: 5

262 PCB Mount Fuses 31 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 125 C 16.45 Ohms Bulk
Littelfuse Fuses with Leads - Through Hole FUSE 125V V/FA HI REL MICRO FUSE .050A
Datasheet
Non-Stocked Lead-Time 27 Weeks
Min.: 10
Mult.: 5

262 PCB Mount Fuses 50 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 125 C 3.2 Ohms Bulk
Littelfuse Fuses with Leads - Through Hole FUSE 125V V/FA HI REL MICRO FUSE .200A
Datasheet
Non-Stocked Lead-Time 27 Weeks
Min.: 10
Mult.: 5

262 PCB Mount Fuses 200 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 125 C 2.3 Ohms Bulk
Littelfuse Fuses with Leads - Through Hole FUSE 125V V/FA HI REL MICRO FUSE .400A
Datasheet
Non-Stocked Lead-Time 27 Weeks
Min.: 10
Mult.: 5

262 PCB Mount Fuses 400 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 125 C 227 mOhms Bulk
Littelfuse Fuses with Leads - Through Hole FUSE 125V V/FA HI REL MICRO FUSE .700A
Datasheet
Non-Stocked
Min.: 10
Mult.: 5

262 PCB Mount Fuses 700 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 125 C 114 mOhms Bulk
Littelfuse Fuses with Leads - Through Hole FUSE 125V V/FA HI REL MICRO FUSE .750A
Datasheet
Non-Stocked
Min.: 10
Mult.: 5

262 PCB Mount Fuses 750 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 125 C 104 mOhms Bulk