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. 647-8156
Mfr. Part No.MF-MSMF050-2
BrandBourns
PHP23.725
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. 897-8967
Mfr. Part No.MF-MSMF250/16X-2
BrandBourns
PHP39.53
Each (In a Pack of 10)
units
5A 16V 5s 2.5A 100 A 4.83mm 1.6mm 3.41mm Gold Plated Nickel 0.015Ω 100mΩ 1.2W -40°C +85°C
RS Stock No. 817-1715
Mfr. Part No.MF-S200
BrandBourns
PHP15.86
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. 517-7111
Mfr. Part No.MINISMDC050F-2
BrandLittelfuse
PHP20.00
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. 817-1668
Mfr. Part No.MF-MSMF110/24X-2
BrandBourns
PHP32.60
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. 895-1631
Mfr. Part No.1812L050/30PR
BrandLittelfuse
PHP39.53
Each (In a Pack of 10)
units
1A 30V dc 0.15s 0.5A 100 A 4.73mm 1mm 3.41mm Solder Plated Copper 0.15Ω 0.8W -40°C +85°C
RS Stock No. 817-1652
Mfr. Part No.MF-LSMF300/24X-2
BrandBourns
PHP38.466
Each (In a Pack of 10)
units
5.2A 24V 5s 3A 20 A 7.98mm 1.6mm 5.44mm Electroless Nickel Immersion Gold 0.02Ω 75mΩ 1.5W -40°C +85°C
RS Stock No. 870-0880
Mfr. Part No.PFRA.010
BrandSchurter
PHP20.746
Each (In a Pack of 50)
units
200mA 60V dc 4s 0.1A 40 A 7.4mm 12.7mm 3.1mm Tin Plated Nickel Copper 2.5Ω 4.5Ω 0.38W -40°C +85°C
RS Stock No. 867-5233
Mfr. Part No.MICROSMD110F-2
BrandLittelfuse
PHP23.47
Each (In a Bag of 10)
units
2.2A 6V dc 0.2s 1.1A 40 A 2.8mm 3.43mm 0.48mm Tin 0.07Ω 210mΩ 0.8W -40°C +85°C
RS Stock No. 517-7054
Mfr. Part No.SMD100F-2
BrandLittelfuse
PHP23.99
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. 787-4186
Mfr. Part No.1206L012WR
BrandLittelfuse
PHP19.06
Each (In a Pack of 10)
units
- 30V dc 0.2s 0.125A 100 A 3.4mm 1.45mm 1.8mm Tin Plated Copper 1.5Ω 0.6W -40°C +85°C
RS Stock No. 517-7082
Mfr. Part No.SMD200F-2
BrandLittelfuse
PHP26.25
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. 517-7206
Mfr. Part No.MICROSMD005F-2
BrandLittelfuse
PHP23.63
Each (In a Pack of 20)
units
150mA 30V dc 1.5s 0.05A 10 A 3.43mm 0.85mm 2.8mm - 3.6Ω 50Ω 1W - +85°C
RS Stock No. 895-1640
Mfr. Part No.2920L200DR
BrandLittelfuse
PHP38.961
Each (In a Pack of 10)
units
4A 15V dc 5s 2A 40 A 7.98mm 1.25mm 5.44mm Solder Plated Copper 0.05Ω 125mΩ 1.5W -40°C +85°C
RS Stock No. 870-0830
Mfr. Part No.PFMF.020.2
BrandSchurter
PHP16.941
Each (In a Pack of 100)
units
- 30V dc 0.06s 0.2A 80 A 4.73mm 1.1mm 3.07mm Electroless Nickel 0.4Ω 0.8W -40°C +85°C
RS Stock No. 787-4209
Mfr. Part No.1206L025YR
BrandLittelfuse
PHP19.06
Each (In a Pack of 10)
units
- 16V dc 0.08s 0.25A 100 A 3.4mm 1mm 1.8mm Tin Plated Copper 0.55Ω 2.3Ω 0.6W -40°C +85°C
RS Stock No. 867-5306
Mfr. Part No.NANOSMD200LR-2
BrandLittelfuse
PHP21.257
Each (In a Bag of 10)
units
8A 6V dc 3s 2.8A 50 A 3.43mm 1.85mm 1mm Gold Plated Nickel 0.006Ω 24mΩ 1W -40°C +85°C
RS Stock No. 867-5352
Mfr. Part No.SMD300F-2
BrandLittelfuse
PHP44.514
Each (In a Bag of 10)
units
- 65V ac/dc - 3A 12 A 6.25mm 2.36mm 2.64mm Copper, Nickel, Tin - 5.3mΩ - -55°C +125°C
RS Stock No. 817-1696
Mfr. Part No.MF-RG800-0
BrandBourns
PHP48.72
Each (In a Pack of 10)
units
13.6A 16V dc 5s 8A 40 A 12.7mm 20.9mm 3mm - 0.0056Ω 17.5mΩ 3W -40°C +85°C
RS Stock No. 817-1614
Mfr. Part No.CMF-RL25U-0
BrandBourns
PHP29.24
Each (In a Pack of 10)
units
150mA 220V 0.25s 0.06A 900 mA - 3.5mm 5.2mm - - 25Ω - -40°C +125°C
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