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. 647-8077
Mfr. Part No.MF-SM260-2
BrandBourns
kr 2,496
Each (In a Pack of 10)
Units
5.2A 6V 20s 2.6A 100 A 7.98mm 3mm 5.44mm Tin Plated Brass 0.025Ω 75mΩ 1.7W -40°C +85°C
RS Stock No. 817-1683
Mfr. Part No.MF-RG300-0
BrandBourns
kr 6,829
Each (In a Pack of 10)
Units
5.1A 16V 1s 3A 100 A 7.1mm 11mm 3mm Tin Plated Copper 0.038Ω 65mΩ 2.3W -40°C +85°C
RS Stock No. 174-0834
Mfr. Part No.RF1864-000
BrandLittelfuse
kr 5,304
Each (In a Pack of 20)
Units
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. 506-993
Mfr. Part No.NANOSMDC012F
BrandLittelfuse
kr 2,243
Each (In a Pack of 10)
Units
390mA 48V dc 0.2s 0.12A 10 A 3.4mm 1mm 1.8mm - 1.4Ω 6.5Ω 0.5W - +85°C
RS Stock No. 174-0396
Mfr. Part No.RF1907-000
BrandLittelfuse
kr 32 948,31
1 Reel of 10000
Reel(s)
600mA 30V dc 0.1s 0.3A 40 A 4.73mm 0.89mm 3.41mm - 0.2Ω 1.75Ω 0.8W -40°C +85°C
RS Stock No. 174-0864
Mfr. Part No.RF1352-000
BrandLittelfuse
kr 2,534
Each (In a Pack of 250)
Units
750mA 6V dc 0.2s 0.35A 40 A 3.43mm 0.62mm 2.8mm - 0.32Ω 1.3Ω 0.8W -40°C +85°C
RS Stock No. 867-5343
Mfr. Part No.SMD150F/33-2
BrandLittelfuse
kr 3,918
Each (In a Bag of 10)
Units
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. 174-0893
Mfr. Part No.RF0317-000
BrandLittelfuse
kr 6,314
Each (In a Pack of 10)
Units
1.5A 60V dc 0.3s 0.75A 10 A 7.98mm 3.18mm 5.44mm - 0.35Ω 1.7W -40°C +85°C
RS Stock No. 517-7256
Mfr. Part No.MICROSMD075F-2
BrandLittelfuse
kr 3,455
Each (In a Pack of 20)
Units
1.5A 6V dc 0.1s 0.75A 40 A 3.43mm 0.62mm 2.8mm - 0.11Ω 400mΩ 0.8W - +85°C
RS Stock No. 691-7500
Mfr. Part No.MF-PSMF020X-2
BrandBourns
kr 5,504
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. 174-0823
Mfr. Part No.RF1406-000
BrandLittelfuse
kr 4,686
Each (In a Pack of 20)
Units
2.2A 8V dc 0.3s 1.1A 100 A 4.73mm 0.62mm 3.41mm - 0.04Ω 210mΩ 1.2W -40°C +85°C
RS Stock No. 174-0397
Mfr. Part No.RF1182-000
BrandLittelfuse
kr 38 338,17
1 Reel of 7500
Reel(s)
2.2A 24V dc 0.5s 1.1A 20 A 4.83mm 1.46mm 3.41mm - 0.06Ω 180mΩ 0.8W -40°C +85°C
RS Stock No. 174-0347
Mfr. Part No.1206L050/15YR
BrandLittelfuse
kr 12 663,79
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. 174-0836
Mfr. Part No.RF1404-000
BrandLittelfuse
kr 3,664
Each (In a Pack of 20)
Units
1.5A 13.2V dc 0.2s 0.75A 100 A 4.73mm 0.62mm 3.41mm - 0.11Ω 450mΩ 1W -40°C +85°C
RS Stock No. 174-0313
Mfr. Part No.0242.200UR
BrandLittelfuse
kr 18,013
Each (On a Reel of 500)
Units
- 250V - - 200 mA 3.02mm - 8.4mm - - 2.68Ω - -40°C +125°C
RS Stock No. 174-0409
Mfr. Part No.RF1352-000
BrandLittelfuse
kr 54 132,92
1 Reel of 20000
Reel(s)
750mA 6V dc 0.2s 0.35A 40 A 3.43mm 0.62mm 2.8mm - 0.32Ω 1.3Ω 0.8W -40°C +85°C
RS Stock No. 817-1668
Mfr. Part No.MF-MSMF110/24X-2
BrandBourns
kr 3,46
Each (In a Pack of 10)
Units
2.2A 24V 0.5s 1.1A 20 A 4.83mm 1.6mm 3.41mm Electroless Nickel Immersion Gold 0.06Ω 180mΩ 0.8W -40°C +85°C
RS Stock No. 867-5295
Mfr. Part No.MINISMDC260F/12-2
BrandLittelfuse
kr 5,65
Each (In a Bag of 5)
Units
2A 240V ac/dc 21s 1A - 18.7mm 24.4mm 5.1mm Tin Plated Copper 0.218Ω 334mΩ 2.87W -20°C +85°C
RS Stock No. 162-2532
Mfr. Part No.MF-SM185/33-2
BrandBourns
kr 2,753
Each (On a Reel of 1500)
Units
3.6A 33V 5s 1.8A 40 A 9.5mm 3mm 6.71mm Tin Plated Brass 0.04Ω 150mΩ 1.9W -40°C +85°C
RS Stock No. 174-0721
Mfr. Part No.0251003.MXL
BrandLittelfuse
kr 5,922
Each (In a Pack of 10)
Units
- 125V ac/dc - - 3 A 7.11mm - 2.8 Dia.mm - - 0.02Ω - -55°C +125°C
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