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. 867-5337
Mfr. Part No.SMD030F-2018-2
BrandLittelfuse
€0.292
Each (In a Bag of 10)
units
- 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. 647-8162
Mfr. Part No.MF-MSMF014-2
BrandBourns
€0.432
Each (In a Pack of 10)
units
- 60V 0.15s 0.14A 40 A 4.73mm 1.1mm 3.41mm Electroless Nickel Immersion Gold 0.4Ω 6.5Ω 0.8W -40°C +85°C
RS Stock No. 174-0455
Mfr. Part No.RF0315-000
BrandLittelfuse
€3,400.00
1 Reel of 10000
Reel(s)
1A 60V dc 4s 0.5A 10 A 7.98mm 3.18mm 5.44mm - 0.35Ω 1.4Ω 1.7W -40°C +85°C
RS Stock No. 174-0861
Mfr. Part No.RF1358-000
BrandLittelfuse
€0.40
Each (In a Pack of 20)
units
3A 6V dc 0.3s 1.5A 100 A 3.4mm 0.89mm 1.8mm - 0.04Ω 110mΩ 0.8W -40°C +85°C
RS Stock No. 817-1699
Mfr. Part No.MF-RG600-0
BrandBourns
€0.366
Each (In a Pack of 10)
units
10.2A 16V dc 3.3s 6A 30 A 10.7mm 17.1mm 3mm - 0.01Ω 28mΩ 2.8W -40°C +85°C
RS Stock No. 787-4211
Mfr. Part No.0805L010YR
BrandLittelfuse
€0.49
Each (In a Pack of 10)
units
- 15V dc 1.5s 0.1A 100 A 2.2mm 1mm 1.5mm Tin Plated Copper 0.5W -40°C +85°C
RS Stock No. 817-1661
Mfr. Part No.MF-LSMF300X-2
BrandBourns
€0.236
Each (In a Pack of 10)
units
5A 6V 20s 3A 40 A 7.98mm 0.85mm 5.44mm Electroless Nickel Immersion Gold 0.015Ω 48mΩ 1.5W -40°C +85°C
RS Stock No. 164-8179
Mfr. Part No.F74007-000
BrandLittelfuse
€0.61
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. 787-4268
Mfr. Part No.2920L050DR
BrandLittelfuse
€0.372
Each (In a Pack of 5)
units
1A 60V dc 4s 0.5A 10 A 7.98mm 1.25mm 5.44mm Tin Plated Copper 0.35Ω 1.4Ω 1.5W -40°C +85°C
RS Stock No. 174-0461
Mfr. Part No.RF0311-000
BrandLittelfuse
€3,382.50
1 Reel of 7500
Reel(s)
3A 33V dc 5s 1.5A 40 A 9.4mm 3mm 6.71mm - 0.08Ω 230mΩ 1.9W -40°C +85°C
RS Stock No. 867-5258
Mfr. Part No.MICROSMD350LR-2
BrandLittelfuse
€0.37
Each (In a Bag of 10)
units
9A 6V dc 10s 3.5A 50 A 3.43mm 2.8mm 1mm Gold Plated Nickel 0.0025Ω 11mΩ 1W -40°C +85°C
RS Stock No. 174-0326
Mfr. Part No.0251005.MXL
BrandLittelfuse
€350.00
1 Reel of 1000
Reel(s)
- 125V ac/dc - - 5 A 7.11mm - 2.8 Dia.mm - - 0.01Ω - -55°C +125°C
RS Stock No. 787-4215
Mfr. Part No.0603L010YR
BrandLittelfuse
€0.682
Each (In a Pack of 5)
units
- 15V dc 1s 0.1A 40 A 1.8mm 0.75mm 1mm Tin Plated Copper 0.9Ω 0.5W -40°C +85°C
RS Stock No. 817-1712
Mfr. Part No.MF-S175
BrandBourns
€0.182
Each (In a Pack of 10)
units
3.8A 15V 4s 1.75A 100 A 12.1mm 1mm 5.2mm Quarter Hard Nickel 0.05Ω 90mΩ 1.5W -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. 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. 174-0393
Mfr. Part No.RF1864-000
BrandLittelfuse
€3,587.50
1 Reel of 10000
Reel(s)
300mA 60V dc 5s 0.1A 40 A 4.73mm 0.89mm 3.41mm - 0.7Ω 12.7Ω 0.75W -40°C +85°C
RS Stock No. 174-0827
Mfr. Part No.60R010XU
BrandLittelfuse
€0.325
Each (In a Pack of 50)
units
200mA 60V dc 4s 0.1A 40 A 7.4mm 12.7mm 3.1mm Tin Plated Copper Clad Steel 2.5Ω 7.5Ω 0.38W -40°C +85°C
RS Stock No. 787-4218
Mfr. Part No.1812L050PR
BrandLittelfuse
€0.226
Each (In a Pack of 10)
units
1A 15V dc 0.15s 0.5A 100 A 4.73mm 0.75mm 3.41mm Tin Plated Copper 0.15Ω 0.8W -40°C +85°C
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