021606.3MXBP

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Fuses
A fuse is a device that regulates the release of electrical energy by breaking an electric circuit when a predefined threshold of current passes through it. A fuse is a safety device which protects the circuit and the user from an overload of current, which can cause damage to wires, electrical equipment, and personal harm. It is important to select a fuse with an appropriate current rating for an application, and a fuse should always be replaced with one that is the same rating so that the same safety is maintained.
021606.3MXBP Application Field and Working Principle
 
021606.3MXBP is part of the series of miniature PC board mountable fuses designed for protecting surface mount components and circuits. The fuse is designed for a variety of applications, including low-power switching circuits, single-board computers, small signal circuits, and power supplies. The components used in this fuse are a hollow-wick, silver-coated metal strip and a cylinder of ceramic material containing two metal-oxide elements.
When the desired current threshold is exceeded, the fuse uses a mechanism where the silver-coated metal strip is heated up, causing the surrounding air to expand. This creates high air pressure which, in turn, causes the ceramic cylinder to break, resulting in the interruption of the electric current flow. The design of this fuse also features a quick trip design, which ensures fast response in current overloads.
This fuse offers tremendous protection of low-power components such as microprocessors. Additionally, it can be used to protect electric motors, as they require a high starting current. Other qualities of this fuse are its versatility − its miniature design allows for increased design flexibility − and its low cost. Smaller versions also provide improved arc fault protection. In addition, its high cycling capability and long operational life offer excellent performance for applications requiring regulated current.
In order to ensure proper performance, the fuse should be replaced with an equal or higher amp rated fuse. It should be noted that non-verified ratings can lead to potential damage to the components in the circuit as well as overloading the fuse. It is highly recommended to use a fuse holder which can be found in different sizes to mount the particular fuse. The proper application and selection of the fuse amp ratings may determine the condition and safety of the application it is used on.

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