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. 647-8207
Mfr. Part No.MF-MSMF110/16-2
BrandBourns
SGD0.561
Each (In a Pack of 10)
units
2.2A 16V 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. 624-3130
Mfr. Part No.NANOSMDC150F-2
BrandLittelfuse
SGD0.558
Each (In a Pack of 10)
units
3A 6V dc 0.3s 1.5A 100 A 3.4mm 0.89mm 1.8mm - 0.04Ω 110mΩ 0.8W - +85°C
RS Stock No. 647-8033
Mfr. Part No.MF-SM100-2
BrandBourns
SGD0.465
Each (In a Pack of 10)
units
2.2A 30V 0.5s 1.1A 80 A 7.98mm 3mm 5.44mm Tin Plated Brass 0.12Ω 480mΩ 1.7W -40°C +85°C
RS Stock No. 517-7111
Mfr. Part No.MINISMDC050F-2
BrandLittelfuse
SGD0.451
Each (In a Pack of 10)
units
1A 24V dc 0.15s 0.5A 100 A 4.73mm 0.62mm 3.41mm - 0.15Ω 0.8W - +85°C
RS Stock No. 647-8263
Mfr. Part No.MF-MSMF200-2
BrandBourns
SGD0.682
Each (In a Pack of 10)
units
4A 8V 3s 2A 40 A 4.73mm 0.85mm 3.41mm Electroless Nickel Immersion Gold 0.02Ω 80mΩ 0.8W -40°C +85°C
RS Stock No. 647-8156
Mfr. Part No.MF-MSMF050-2
BrandBourns
SGD0.473
Each (In a Pack of 10)
units
1A 15V 0.15s 0.5A 100 A 4.73mm 0.85mm 3.41mm Electroless Nickel Immersion Gold 0.15Ω 0.8W -40°C +85°C
RS Stock No. 517-7082
Mfr. Part No.SMD200F-2
BrandLittelfuse
SGD0.74
Each (In a Pack of 10)
units
4A 15V dc 12s 2A 40 A 9.4mm 3mm 6.71mm - 0.05Ω 125mΩ 1.9W - +85°C
RS Stock No. 647-8320
Mfr. Part No.MF-NSMF050-2
BrandBourns
SGD0.493
Each (In a Pack of 10)
units
1A 13.2V 0.1s 0.5A 100 A 3.4mm 0.85mm 1.8mm Electroless Nickel Immersion Gold 0.15Ω 700mΩ 0.4W -40°C +85°C
RS Stock No. 517-7054
Mfr. Part No.SMD100F-2
BrandLittelfuse
SGD0.553
Each (In a Pack of 10)
units
2.2A 30V 0.5s 1.1A 40 A 7.98mm 3mm 5.44mm - 0.12Ω 480mΩ 1.7W - +85°C
RS Stock No. 517-7262
Mfr. Part No.MICROSMD110F-2
BrandLittelfuse
SGD0.674
Each (In a Pack of 20)
units
2.2A 6V dc 0.2s 1.1A 40 A 3.43mm 0.48mm 2.8mm - 0.07Ω 210mΩ 0.8W - +85°C
RS Stock No. 647-8162
Mfr. Part No.MF-MSMF014-2
BrandBourns
SGD0.582
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. 647-8213
Mfr. Part No.MF-MSMF110-2
BrandBourns
SGD0.433
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. 817-1614
Mfr. Part No.CMF-RL25U-0
BrandBourns
SGD0.719
Each (In a Pack of 10)
units
150mA 220V 0.25s 0.06A 900 mA - 3.5mm 5.2mm - - 25Ω - -40°C +125°C
RS Stock No. 817-1715
Mfr. Part No.MF-S200
BrandBourns
SGD0.447
Each (In a Pack of 10)
units
4.4A 30V 4s 2A 100 A 8.2mm 1.1mm 11mm Quarter Hard Nickel 0.03Ω 60mΩ 1.9W -40°C +85°C
RS Stock No. 895-1634
Mfr. Part No.2016L050MR
BrandLittelfuse
SGD0.625
Each (In a Pack of 10)
units
1.1A 60V dc 5s 0.55A 20 A 5.44mm 2mm 4.43mm Solder Plated Copper 0.2Ω 1.4W -40°C +85°C
RS Stock No. 164-8219
Mfr. Part No.MINISMDC030F-2
BrandLittelfuse
SGD570.36
1 Tape of 2000
Tape(s)
600mA 30V dc 0.1s 0.3A 40 A 3.41mm 4.73mm 0.89mm Tin 0.2Ω 750mΩ 0.8W -40°C +85°C
RS Stock No. 517-7098
Mfr. Part No.SMD250F-2
BrandLittelfuse
SGD0.702
Each (In a Pack of 10)
units
5A 15V 25s 2.5A 40 A 9.4mm 3mm 6.71mm - 0.035Ω 85mΩ 1.9W - +85°C
RS Stock No. 817-1620
Mfr. Part No.CMF-SDP35A-2
BrandBourns
SGD1.581
Each (In a Pack of 10)
units
230mA 230V 0.04s 0.11A 4.6 A 8.75mm 10.2mm 7.2mm - - 35Ω - -40°C +125°C
RS Stock No. 647-8005
Mfr. Part No.MF-SM030-2
BrandBourns
SGD0.579
Each (In a Pack of 10)
units
- 60V 3s 0.3A 40 A 7.98mm 3.18mm 5.44mm Tin Plated Brass 0.9Ω 4.8Ω 1.7W -40°C +85°C
RS Stock No. 517-7105
Mfr. Part No.MINISMDC020F-2
BrandLittelfuse
SGD0.473
Each (In a Pack of 10)
units
400mA 30V dc 0.02s 0.2A 10 A 4.73mm 0.89mm 3.41mm - 0.6Ω 3.3Ω 0.8W - +85°C
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