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. 517-7082
Mfr. Part No.SMD200F-2
BrandLittelfuse
MYR1.91
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. 817-1725
Mfr. Part No.MF-SVS175-0
BrandBourns
MYR3.342
Each (In a Pack of 5)
units
4.2A 10V 5s 1.75A 100 A 6.4mm 0.9mm 5.5mm Weldable Nickel 0.017Ω 31mΩ 2.1W -40°C +85°C
RS Stock No. 517-7240
Mfr. Part No.MICROSMD050F-2
BrandLittelfuse
MYR1.45
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. 517-7032
Mfr. Part No.SMD050F-2
BrandLittelfuse
MYR1.57
Each (In a Pack of 10)
units
1A 60V 4s 0.5A 10 A 7.98mm 3.18mm 5.44mm - 0.35Ω 1.4Ω 1.7W - +85°C
RS Stock No. 517-7105
Mfr. Part No.MINISMDC020F-2
BrandLittelfuse
MYR1.23
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
RS Stock No. 164-8219
Mfr. Part No.MINISMDC030F-2
BrandLittelfuse
MYR1,413.79
1 Tape of 2000
Tape(s)
600 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. 494-723
Mfr. Part No.ZEN056V130A24LS
BrandLittelfuse
MYR7.062
Each (In a Pack of 5)
units
- 24V 0.1s 1.3A 3 A 4.15mm 2mm 4.15mm - 0.12Ω 160mΩ 0.7W -40°C +85°C
RS Stock No. 517-7111
Mfr. Part No.MINISMDC050F-2
BrandLittelfuse
MYR1.57
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. 867-5264
Mfr. Part No.MINISMDC030F-2
BrandLittelfuse
MYR1.64
Each (In a Bag of 10)
units
- 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. 506-921
Mfr. Part No.MINISMDC125F
BrandLittelfuse
MYR2.327
Each (In a Pack of 10)
units
2.5A 6V dc 0.4s 1.25A 100 A 4.73mm 0.48mm 3.41mm - 0.05Ω 140mΩ 0.8W - +85°C
RS Stock No. 867-5261
Mfr. Part No.MINISMDC075F/24-2
BrandLittelfuse
MYR1.94
Each (In a Bag of 10)
units
1.5A 24V dc 0.3s 0.75A 40 A 3.41mm 4.83mm 1.46mm Tin 0.09Ω 290mΩ 0.8W -40°C +85°C
RS Stock No. 647-8140
Mfr. Part No.MF-MSMF020-2
BrandBourns
MYR1.44
Each (In a Pack of 10)
units
- 30V 0.06s 0.2A 80 A 4.73mm 1.1mm 3.41mm Electroless Nickel Immersion Gold 0.4Ω 0.8W -40°C +85°C
RS Stock No. 624-3152
Mfr. Part No.NANOSMDC075F-2
BrandLittelfuse
MYR1.31
Each (In a Pack of 10)
units
1.5A 6V dc 0.1s 0.75A 100 A 3.4mm 0.68mm 1.8mm - 0.09Ω 300mΩ 0.8W - +85°C
RS Stock No. 167-4475
Mfr. Part No.MF-FSMF050X-2
BrandBourns
MYR1.761
Each (On a Reel of 4000)
units
1A 6V 0.1s 0.5A 40 A 1.85mm 1mm 1.05mm Gold Plated Nickel 0.1Ω 800mΩ 0.5W -40°C +85°C
RS Stock No. 647-8285
Mfr. Part No.MF-NSMF075-2
BrandBourns
MYR1.43
Each (In a Pack of 10)
units
1.5A 6V 0.1s 0.75A 100 A 3.4mm 0.7mm 1.8mm Electroless Nickel Immersion Gold 0.1Ω 400mΩ 0.4W -40°C +85°C
RS Stock No. 787-4182
Mfr. Part No.1206L016WR
BrandLittelfuse
MYR1.64
Each (In a Pack of 10)
units
- 30V dc 0.3s 0.16A 100 A 3.4mm 1.45mm 1.8mm Tin Plated Copper 1.2Ω 4.5Ω 0.6W -40°C +85°C
RS Stock No. 517-7234
Mfr. Part No.MICROSMD035F-2
BrandLittelfuse
MYR1.71
Each (In a Pack of 20)
units
750mA 6V dc 0.2s 0.35A 40 A 3.43mm 0.62mm 2.8mm - 0.32Ω 1.3Ω 0.8W - +85°C
RS Stock No. 895-1638
Mfr. Part No.2016L100/33DR
BrandLittelfuse
MYR2.442
Each (In a Pack of 10)
units
2.2A 33V dc 0.5s 1.1A 40 A 5.44mm 1.25mm 4.43mm Solder Plated Copper 0.1Ω 400mΩ 1.4W -40°C +85°C
RS Stock No. 817-1706
Mfr. Part No.MF-RG900-0
BrandBourns
MYR3.921
Each (In a Pack of 10)
units
15.3A 16V dc 5.5s 9A 45 A 14mm 21.7mm 3mm - 0.0047Ω 13.5mΩ 3.3W -40°C +85°C
RS Stock No. 647-8207
Mfr. Part No.MF-MSMF110/16-2
BrandBourns
MYR1.455
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
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