Resettable Surface Mount Fuses

Resettable surface mount fuses are a reusable type of circuit protection device that is able to be mounted onto printed circuit boards. They trip when the current gets too high, but will function again when conditions return to an acceptable level.

How do resettable surface mount fuses work?

Resettable surface mount fuses form part of the circuit on a PCB (printed circuit board), allowing electrical current to flow through them. When a fault such as overcurrent is detected in the circuit, they are tripped, forcing a break in the circuit which prevents electricity from continuing to flow. This prevents any damage to the circuit or attached devices. Unlike non-resettable surface mount fuses, they can be used over and over, as they will reconnect the circuit when conditions return to normal.

Types of resettable surface mount fuses

Resettable surface mount fuses have a number of characteristics that can vary between models, including terminal material, voltage rating and their operating temperature range. They also come in various different sizes.


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Description Price Trip Current Voltage Rating Time to Trip Hold Current Maximum Current Length Height Width Terminal Material Minimum Resistance Maximum Resistance Power Dissipation Minimum Operating Temperature Maximum Operating Temperature
RS Stock No. 174-0821
Mfr. Part No.RF2926-000
BrandLittelfuse
€0.461
Each (In a Pack of 100)
units
150mA 15V dc 0.1s 0.05A 40 A 1.8mm 0.85mm 1mm - 3.8Ω 30Ω 0.5W -40°C +85°C
RS Stock No. 164-8224
Mfr. Part No.NANOSMD200LR-2
BrandLittelfuse
€1,350.00
1 Tape of 3000
Tape(s)
8A 6V dc 3s 2.8A 50 A 3.43mm 1.85mm 1mm Gold Plated Nickel 0.006Ω 24mΩ 1W -40°C +85°C
RS Stock No. 734-8882
Mfr. Part No.MF-MSMF020/60-2
BrandBourns
€0.405
Each (In a Bag of 10)
units
- 30V 0.06s 0.20A 80 A - - - - 0.40Ω 0.8W 0°C +23°C
RS Stock No. 867-5236
Mfr. Part No.F74007-000
BrandLittelfuse
€0.384
Each (In a Bag of 10)
units
- 240V ac/dc 21s 0.33A 4.5 A 11.4mm 19mm 3.8mm Tin Plated Copper 0.77Ω 1.24Ω 1.7W -20°C +85°C
RS Stock No. 174-0775
Mfr. Part No.1206L110THYR
BrandLittelfuse
€0.20
Each (In a Pack of 20)
units
2.2A 8V dc 0.1s 1.1A 100 A 3.4mm 0.6mm 1.8mm - 0.04Ω 210mΩ 0.8W -40°C +85°C
RS Stock No. 174-0347
Mfr. Part No.1206L050/15YR
BrandLittelfuse
€1,025.00
1 Reel of 4000
Reel(s)
1A 15V dc 0.1s 0.5A 100 A 3.4mm 0.75mm 1.8mm - 0.15Ω 750mΩ 0.6W -40°C +85°C
RS Stock No. 174-0355
Mfr. Part No.0603L050YR
BrandLittelfuse
€3,221.71
1 Reel of 4000
Reel(s)
1A 6V dc 0.1s 0.5A 40 A 1.8mm 0.75mm 1mm Tin Plated Copper 0.1Ω 680mΩ 0.5W -40°C +85°C
RS Stock No. 174-0398
Mfr. Part No.RF1183-000
BrandLittelfuse
€3,247.50
1 Reel of 7500
Reel(s)
5A 12V dc 5s 2.6A 100 A 4.83mm 1.52mm 3.41mm - 0.01Ω 40mΩ 1W -40°C +85°C
RS Stock No. 174-0889
Mfr. Part No.RF0323-000
BrandLittelfuse
€0.45
Each (In a Pack of 200)
units
800mA 60V dc 1.5s 0.3A 20 A 5.44mm 1.78mm 4.93mm - 0.5Ω 2.3Ω 1.5W -40°C +85°C
RS Stock No. 174-0359
Mfr. Part No.0603L050SLYR
BrandLittelfuse
€3,221.71
1 Reel of 4000
Reel(s)
1A 6V dc 0.1s 0.5A 50 A 1.8mm 0.75mm 1mm Tin Plated Copper 0.07Ω 350mΩ 0.6W -40°C +85°C
RS Stock No. 174-0840
Mfr. Part No.RF1343-000
BrandLittelfuse
€0.225
Each (In a Pack of 200)
units
390mA 48V dc 0.2s 0.12A 10 A 3.4mm 1mm 1.8mm - 1.4Ω 6.5Ω 0.5W -40°C +85°C
RS Stock No. 164-8220
Mfr. Part No.MINISMDC110F/16-2
BrandLittelfuse
€0.188
Each (On a Tape of 2000)
units
2.2A 16V dc 0.3s 1.1A 100 A 3.41mm 4.37mm 0.48mm Tin 0.06Ω 180mΩ 10.8W -40°C +85°C
RS Stock No. 174-0390
Mfr. Part No.RF1345-000
BrandLittelfuse
€3,528.77
1 Reel of 15000
Reel(s)
420mA 24V dc 0.1s 0.2A 100 A 3.4mm 0.82mm 1.8mm - 0.65Ω 3.1Ω 0.6W -40°C +85°C
RS Stock No. 647-8213
Mfr. Part No.MF-MSMF110-2
BrandBourns
€0.416
Each (In a Pack of 10)
units
2.2A 6V 0.3s 1.1A 100 A 4.73mm 0.85mm 3.41mm Electroless Nickel Immersion Gold 0.04Ω 210mΩ 0.8W -40°C +85°C
RS Stock No. 691-7500
Mfr. Part No.MF-PSMF020X-2
BrandBourns
€0.688
Each (In a Pack of 5)
units
- 9V 0.02s 0.2A 40 A 2.3mm 0.85mm 1.5mm Gold Plated Nickel 0.65Ω 3.5Ω 0.5W -40°C +85°C
RS Stock No. 174-0695
Mfr. Part No.0603L020YR
BrandLittelfuse
€1.288
Each (In a Pack of 50)
units
500mA 9V dc 0.6s 0.2A 40 A 1.8mm 0.75mm 1mm Solder Plated Copper 0.55Ω 3.5Ω 0.5W -40°C +85°C
RS Stock No. 164-8225
Mfr. Part No.NANOSMD350LR-2
BrandLittelfuse
€1,425.00
1 Tape of 3000
Tape(s)
7.5A 6V dc 5s 4A 50 A 3.43mm 1.85mm 1mm Gold Plated Nickel 0.004Ω 18mΩ 1W -40°C +85°C
RS Stock No. 174-0794
Mfr. Part No.RF1353-000
BrandLittelfuse
€0.375
Each (In a Pack of 250)
units
1A 13.2V dc 0.05s 0.5A 40 A 3.43mm 0.62mm 2.8mm - 0.25Ω 900mΩ 0.8W -40°C +85°C
RS Stock No. 174-0915
Mfr. Part No.RF0314-000
BrandLittelfuse
€0.467
Each (In a Pack of 10)
units
600mA 60V dc 3s 0.3A 10 A 7.98mm 3.18mm 5.44mm - 1.2Ω 4.8Ω 1.7W -40°C +85°C
RS Stock No. 174-0341
Mfr. Part No.2920L500/16MR
BrandLittelfuse
€1,400.00
1 Reel of 1000
Reel(s)
10A 16V dc 5s 5A 40 A 7.98mm 1.6mm 5.44mm - 0.005Ω 20mΩ 2W -40°C +85°C
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