One of the most economical ways to provide overcurrent protect on a printed circuit board (PCB) is the subminiature fuse. This fuse is sometimes referred as a "Pico Fuse" (Pico Fuse is a registered trademark of Littelfuse).
The subminiature fuse is both small (2.4 x 7 mm) and relatively inexpensive (but never cheap). One of the major reasons the fuse is so economical is that directly solders onto the PCB and therefore eliminates the need for a potentially expensive fuse holder. The fuses are rated up to 250 volts.
OptiFuse has fasting (FXG), medium time-delay (MXG) and true time-delay (TXG) versions available (unlike our two big competitors). In addition, OptiFuse color-codes the above fuses so they can’t be mixed up in a production environment: FXG - Light Blue, MXG - Brown, TXG - Light Green.
The fuses typically come taped in an "ammo pack" but can be reeled as well. Bulk fuses are also available.
To learn more about the OptiFuse subminiature fuses, please click here to go to the OptiFuse subminiature fuse web page.
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