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
Select Image Part #
 Mfr.
Description Datasheet Availability Pricing (USD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Series
Product
Current Rating
Voltage Rating AC
Fuse Type
Body Style
Voltage Rating DC
Interrupt Rating
Termination Style
Fuse Size/Group
Minimum Operating Temperature
Maximum Operating Temperature
Resistance
Packaging
Littelfuse Fuses with Leads - Through Hole 125V 5A MICRO Very Fast Acting
Datasheet
26In Stock
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 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
16In Stock
10Expected 18/02/2026
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 26/03/2026
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
2,262On 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
1,780On 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 12/03/2026
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 12/03/2026
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 05/03/2026
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 05/03/2026
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 27/03/2026
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 12/03/2026
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 125V .01A MICRO Very Fast Acting
Datasheet
30Expected 02/03/2026
Min.: 1
Mult.: 1
No
273 PCB Mount Fuses 10 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 85 C 80 Ohms Bulk
Littelfuse Fuses with Leads - Through Hole 125V .125A MICRO Very Fast Acting
Datasheet
105Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

272 PCB Mount Fuses 125 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 125 C 1 Ohms Bulk
Littelfuse Fuses with Leads - Through Hole 125V V/FA MICRO .500A
Datasheet
45Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

272 PCB Mount Fuses 500 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 125 C 167 mOhms Bulk
Littelfuse Fuses with Leads - Through Hole 125V V/FA MICRO 1.5A
Datasheet
180Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

272 PCB Mount Fuses 1.5 A 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 125 C 57.8 mOhms Bulk
Littelfuse Fuses with Leads - Through Hole 125V V/FA MICRO .125A
Datasheet
50Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

273 PCB Mount Fuses 125 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 85 C 1 Ohms Bulk
Littelfuse Fuses with Leads - Through Hole 125V V/FA MICRO 4A
Datasheet
30Factory Stock Available
More Info Available
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 V/FA MICRO 1.5A
Datasheet
475Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

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 .25A MICRO Very Fast Acting
Datasheet
20Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

274 Hi-Rel Fuses 250 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 85 C 1.75 Ohms Bulk
Littelfuse Fuses with Leads - Through Hole 125V .5A MICRO Very Fast Acting
Datasheet
35Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

274 Hi-Rel Fuses 500 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 85 C 167 mOhms Bulk
Littelfuse Fuses with Leads - Through Hole 125V 1A MICRO Very Fast Acting
Datasheet
25Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

274 Hi-Rel Fuses 1 A 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 85 C 88 mOhms Bulk
Littelfuse Fuses with Leads - Through Hole 125V 3A MICRO Very Fast Acting
Datasheet
200Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

274 Hi-Rel Fuses 3 A 125 VAC Fast Blow Leaded Fuses 125 VDC 10 kA at 125 VDC Radial MICRO - 55 C + 85 C 27.5 mOhms Bulk
Littelfuse Fuses with Leads - Through Hole 125V 1.5A MICRO Very Fast Acting
Datasheet
30Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

274 Hi-Rel 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