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. 174-0862
Mfr. Part No.RF1334-000
BrandLittelfuse
€0.40
Each (In a Pack of 20)
units
280mA 60V dc 0.008s 0.14A 10 A 4.73mm 0.89mm 3.41mm - 1.5Ω 0.75W -40°C +85°C
RS Stock No. 174-0705
Mfr. Part No.2920L250DR
BrandLittelfuse
€0.605
Each (In a Pack of 10)
units
5A 15V dc 10s 2.5A 40 A 7.98mm 1.25mm 5.44mm - 0.03Ω 80mΩ 1.5W -40°C +85°C
RS Stock No. 870-0969
Mfr. Part No.PFUF.020.2
BrandSchurter
€848.70
1 Pack of 3000
Pack(s)
400mA 30V dc 0.02s 0.2A 10 A 3.43mm 1.1mm 2.35mm Electroless Nickel 0.4Ω 0.6W -40°C +85°C
RS Stock No. 174-0770
Mfr. Part No.0251010.MRT1L
BrandLittelfuse
€0.50
Each (In a Pack of 10)
units
- 125V ac/dc - - 10 A 7.11mm - 2.8 Dia.mm - - 0.007Ω - -55°C +125°C
RS Stock No. 647-8099
Mfr. Part No.MF-SM250-2
BrandBourns
€0.45
Each (In a Pack of 10)
units
5A 15V 25s 2.5A 100 A 9.5mm 3mm 6.71mm Tin Plated Brass 0.024Ω 85mΩ 1.9W -40°C +85°C
RS Stock No. 174-0710
Mfr. Part No.1812L200/12DR
BrandLittelfuse
€1.978
Each (In a Pack of 5)
units
3.5A 12V dc 2s 2A 100 A 4.73mm 1.2mm 3.41mm Solder Plated Copper 0.02Ω 70mΩ 1W -40°C +85°C
RS Stock No. 164-8179
Mfr. Part No.F74007-000
BrandLittelfuse
€0.575
Each (In a Bag of 500)
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. 174-0339
Mfr. Part No.0402L020SLKR
BrandLittelfuse
€12,138.57
1 Reel of 10000
Reel(s)
500mA 6V dc 1s 0.2A 40 A 1.15mm 0.6mm 0.65mm Tin Plated Copper 0.1Ω 1.25Ω 0.5W -40°C +85°C
RS Stock No. 174-0874
Mfr. Part No.RF0313-000
BrandLittelfuse
€0.733
Each (In a Pack of 10)
units
5A 15V dc 25s 2.5A 40 A 9.4mm 3mm 6.71mm - 0.03Ω 80mΩ 1.9W -40°C +85°C
RS Stock No. 517-7240
Mfr. Part No.MICROSMD050F-2
BrandLittelfuse
€0.251
Each (In a Pack of 20)
units
1A 13.2V dc 0.05s 0.5A 40 A 3.43mm 0.62mm 2.8mm - 0.25Ω 900mΩ 0.8W - +85°C
RS Stock No. 167-4519
Mfr. Part No.MF-SMDF150-2
BrandBourns
€0.249
Each (On a Reel of 6000)
units
3A 15V 0.8s 1.5A 40 A 5.44mm 0.85mm 4.93mm Electroless Nickel Immersion Gold 0.05Ω 170mΩ 1.1W -40°C +85°C
RS Stock No. 691-7591
Mfr. Part No.MF-SMDF150-2
BrandBourns
€0.526
Each (In a Pack of 5)
units
3A 15V 0.8s 1.5A 40 A 5.44mm 0.85mm 4.93mm Electroless Nickel Immersion Gold 0.05Ω 170mΩ 1.1W -40°C +85°C
RS Stock No. 174-0353
Mfr. Part No.1812L035/30DR
BrandLittelfuse
€575.00
1 Reel of 1500
Reel(s)
750mA 30V dc 0.15s 0.35A 40 A 4.73mm 1.25mm 3.41mm Solder Plated Copper 0.4Ω 1.7Ω 0.8W -40°C +85°C
RS Stock No. 174-0400
Mfr. Part No.RF1335-000
BrandLittelfuse
€2,500.00
1 Reel of 10000
Reel(s)
400mA 30V dc 0.02s 0.2A 10 A 4.73mm 0.89mm 3.41mm - 0.6Ω 3.3Ω 0.8W -40°C +85°C
RS Stock No. 910-8560
Mfr. Part No.LC82AY-1
BrandBourns
€0.346
Each (In a Pack of 5)
units
40A 28V dc - - 12 A 5.8mm 1.15mm 3.2mm Copper Alloy - 10mΩ - - -
RS Stock No. 174-0360
Mfr. Part No.0603L175SLYR
BrandLittelfuse
€3,221.71
1 Reel of 4000
Reel(s)
3.5A 6V dc 0.6s 1.75A 50 A 1.8mm 1mm 1mm Tin Plated Copper 0.005Ω 60mΩ 0.6W -40°C +85°C
RS Stock No. 174-0371
Mfr. Part No.1812L200THPR
BrandLittelfuse
€400.00
1 Reel of 2000
Reel(s)
3.5A 8V dc 2s 2A 100 A 4.73mm 0.6mm 3.41mm Solder Plated Copper 0.02Ω 70mΩ 0.8W -40°C +85°C
RS Stock No. 174-0368
Mfr. Part No.1812L020/60DR
BrandLittelfuse
€1,397.26
1 Reel of 1500
Reel(s)
400mA 60V dc 2s 0.2A 40 A 4.73mm 1.25mm 3.41mm Solder Plated Copper 1.4Ω 4.4Ω 0.8W -40°C +85°C
RS Stock No. 870-0865
Mfr. Part No.PFMF.260.2
BrandSchurter
€668.05
1 Pack of 2000
Pack(s)
5.2A 6V dc 5s 2.6A 100 A 4.73mm 0.85mm 3.07mm Electroless Nickel 0.015Ω 80mΩ 0.8W -40°C +85°C
RS Stock No. 174-0687
Mfr. Part No.2920L330/24MR
BrandLittelfuse
€1.50
Each (In a Pack of 5)
units
5.5A 24V dc 5s 3.3A 40 A 7.98mm 2mm 5.44mm - 0.01Ω 50mΩ 2W -40°C +85°C
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