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Fuse 5mm 125VAC 5A
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Price: $0.88
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Sparkfun Item #: COM-09772 -

This is a glass ferrule type fuse. It fits great with our 5mm fuse clips. The fuse is rated for 125VAC, up to 5A. Fuses are pretty simple, if more than 5A pass through the fuse, the small filament inside the fuse heats up and breaks (like a light bulb burning out). The circuit is then broken and hopefully your circuit is saved from molten destruction. For smaller loads, you may want to checkout a PTC (aka resettable fuse) listed below. These handle less current (500mA) but can be set and reset...

Fuse 5mm 250V 200mA
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Price: $2.12
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Sparkfun Item #: COM-10165 -

This is a glass ferrule type fuse. It fits great with our 5mm fuse clips. The fuse is rated for 250VAC, up to 200mA. Fuses are pretty simple, if more than 200mA pass through the fuse, the small filament inside the fuse heats up and breaks (like a light bulb burning out). The circuit is then broken and hopefully your circuit is saved from molten destruction. For smaller loads, you may want to checkout a PTC (aka resettable fuse) listed below. They handle less current (500mA) but can be set and...

Fuse 5mm 250V 500mA
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Price: $1.77
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Availability: Back Order
Sparkfun Item #: COM-10166 -

This is a glass ferrule type fuse. It fits great with our 5mm fuse clips. The fuse is rated for 250VAC, up to 500mA. Fuses are pretty simple, if more than 500mA pass through the fuse, the small filament inside the fuse heats up and breaks (like a light bulb burning out). The circuit is then broken and hopefully your circuit is saved from molten destruction. For smaller loads, you may want to checkout a PTC (aka resettable fuse) listed below. These handle less current (500mA) but can be set and...

Fuse Clip 5mm
Price: $0.53
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Availability: Out of Stock
Sparkfun Item #: COM-09773 -

This is a 5mm PTH fuse clip intended to be used with our Glass Fuses. **Note: **These are sold in single units. If you intend to secure a fuse using these clips you'll need two clips. We recommend ordering two. Part #: 1A3399-10 Documents: Datasheet

Resettable Fuse PTC
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Price: $2.21
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Sparkfun Item #: COM-08357 -

This is a handy little device that can save your system from smoking. A resettable fuse (also known as a PTC) is a resistor that has very unique properties. For this model, if your circuit tries to draw more than 250mA of current (if you have a bad short for instance) the PTC would 'trip' (by heating up). The increased resistance (trip state) would break the circuit and allow only a small leakage current. The leakage current may still be enough to hurt some electronics but it's much less than...