.630 mA ceramic electrical fuse. Used in a variety of printers including many DTF and DTG systems. These fuses are proven to have extended lifetimes. The best part of these .630 amp fuses is easy installetion and testing. they can be replaced typically within minutes, no need to solder or risk damaging your printer or electronic boards.
Always test your fuses before replacing them to insure that you are diagnosing the electronic issue your printer or other device is experiencing.
How to test a fuse.
Find printer repair manuals for many different brands and models for troubleshooting and step by step printer repair procedures.