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. 161-6925
Mfr. Part No.MF-SM075/60-2
BrandBourns
HK$2,697.16
1 Reel of 2000
Reel(s)
1.5A 60 V 0.3s 0.75 A 10 A 7.98mm 3.18mm 5.44mm Tin Plated Brass 0.23Ω 1.7W -40°C +85°C
RS Stock No. 174-0770
Mfr. Part No.0251010.MRT1L
BrandLittelfuse
HK$4.961
Each (In a Pack of 10)
units
- 125 V ac/dc - - 10 A 7.11mm - 2.8 Dia.mm - - 0.007Ω - -55°C +125°C
RS Stock No. 867-5245
Mfr. Part No.MICROSMD200F-2
BrandLittelfuse
HK$3.925
Each (In a Bag of 10)
units
4A 6 V dc 2.5s 2 A 100 A 2.8mm 3.43mm 1.17mm Tin 0.02Ω 60mΩ 0.8W -40°C +85°C
RS Stock No. 174-0725
Mfr. Part No.1206L035YR
BrandLittelfuse
HK$3.446
Each (In a Pack of 20)
units
750mA 6 V dc 0.1s 0.35 A 100 A 3.4mm 0.75mm 1.8mm - 0.3Ω 1.2Ω 0.6W -40°C +85°C
RS Stock No. 174-0706
Mfr. Part No.0603L050YR
BrandLittelfuse
HK$13.294
Each (In a Pack of 50)
units
1A 6 V dc 0.1s 0.5 A 40 A 1.8mm 0.75mm 1mm Tin Plated Copper 0.1Ω 680mΩ 0.5W -40°C +85°C
RS Stock No. 174-0326
Mfr. Part No.0251005.MXL
BrandLittelfuse
HK$3,260.00
1 Reel of 1000
Reel(s)
- 125 V ac/dc - - 5 A 7.11mm - 2.8 Dia.mm - - 0.01Ω - -55°C +125°C
RS Stock No. 651-7582
Mfr. Part No.MF-MSMF160-2
BrandBourns
HK$3.54
Each (In a Pack of 10)
units
2.8A 8 V 2s 1.6 A 100 A 4.73mm 0.85mm 3.41mm Electroless Nickel Immersion Gold 0.035Ω 99mΩ 0.8W -40°C +85°C
RS Stock No. 174-0915
Mfr. Part No.RF0314-000
BrandLittelfuse
HK$5.685
Each (In a Pack of 10)
units
600mA 60 V dc 3s 0.3 A 10 A 7.98mm 3.18mm 5.44mm - 1.2Ω 4.8Ω 1.7W -40°C +85°C
RS Stock No. 692-7633
Mfr. Part No.MF-FSMF050X-2
BrandBourns
HK$4.888
Each (In a Pack of 5)
units
1A 6 V 0.1s 0.5 A 40 A 1.85mm 1mm 1.05mm Gold Plated Nickel 0.1Ω 800mΩ 0.5W -40°C +85°C
RS Stock No. 174-0679
Mfr. Part No.0242.200UR
BrandLittelfuse
HK$25.784
Each (In a Pack of 5)
units
- 250 V - - 200 mA 3.02mm - 8.4mm - - 2.68Ω - -40°C +125°C
RS Stock No. 174-0854
Mfr. Part No.RF1183-000
BrandLittelfuse
HK$5.678
Each (In a Pack of 20)
units
5A 12 V dc 5s 2.6 A 100 A 4.83mm 1.52mm 3.41mm - 0.01Ω 40mΩ 1W -40°C +85°C
RS Stock No. 712-7470
Mfr. Part No.PICOSMDC035S-2
BrandLittelfuse
HK$3.806
Each (In a Pack of 10)
units
750mA 6 V dc 0.2s 0.35 A 100 A 2.2mm 0.68mm 1.5mm - 0.35Ω 1.4Ω 0.5W - +85°C
RS Stock No. 174-0905
Mfr. Part No.RF1673-000
BrandLittelfuse
HK$4.919
Each (In a Pack of 100)
units
6.3A 30 V dc 3s 3.5 A 100 A 31.8mm 1.1mm 13.5mm Quarter Hard Nickel 0.01Ω 30mΩ 2.5W -40°C +85°C
RS Stock No. 870-0969
Mfr. Part No.PFUF.020.2
BrandSchurter
HK$1.88
Each (In a Pack of 3000)
units
400mA 30 V dc 0.02s 0.2 A 10 A 3.43mm 1.1mm 2.35mm Electroless Nickel 0.4Ω 0.6W -40°C +85°C
RS Stock No. 867-5337
Mfr. Part No.SMD030F-2018-2
BrandLittelfuse
HK$4.066
Each (In a Bag of 10)
units
- 60 V dc 1.5s 0.3 A 20 A 5.44mm 1.78mm 4.93mm - 0.5Ω 2.3Ω 1.5W -40°C +85°C
RS Stock No. 787-4215
Mfr. Part No.0603L010YR
BrandLittelfuse
HK$8.728
Each (In a Pack of 5)
units
- 15 V dc 1s 0.1 A 40 A 1.8mm 0.75mm 1mm Tin Plated Copper 0.9Ω 0.5W -40°C +85°C
RS Stock No. 174-0889
Mfr. Part No.RF0323-000
BrandLittelfuse
HK$4.394
Each (In a Pack of 200)
units
800mA 60 V dc 1.5s 0.3 A 20 A 5.44mm 1.78mm 4.93mm - 0.5Ω 2.3Ω 1.5W -40°C +85°C
RS Stock No. 517-7256
Mfr. Part No.MICROSMD075F-2
BrandLittelfuse
HK$3.36
Each (In a Pack of 20)
units
1.5A 6 V dc 0.1s 0.75 A 40 A 3.43mm 0.62mm 2.8mm - 0.11Ω 400mΩ 0.8W - +85°C
RS Stock No. 174-0350
Mfr. Part No.0805L035YR
BrandLittelfuse
HK$43,448.27
1 Reel of 4000
Reel(s)
750mA 6 V dc 0.1s 0.35 A 100 A 2.2mm 0.75mm 1.5mm - 0.25Ω 1.2Ω 0.5W -40°C +85°C
RS Stock No. 870-0880
Mfr. Part No.PFRA.010
BrandSchurter
HK$2.842
Each (In a Pack of 50)
units
200mA 60 V dc 4s 0.1 A 40 A 7.4mm 12.7mm 3.1mm Tin Plated Nickel Copper 2.5Ω 4.5Ω 0.38W -40°C +85°C
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