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
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Voltage Rating AC
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Voltage Rating DC
Interrupt Rating
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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 2/18/2026
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 3/26/2026
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 3/12/2026
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 3/12/2026
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 3/5/2026
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 3/5/2026
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 3/27/2026
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 3/12/2026
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 3/2/2026
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