Response Time:	Fast
Size / Dimension:	0.291" L x 0.122" W x 0.102" H (7.40mm x 3.10mm x 2.60mm)
Color:	--
Operating Temperature:	-55°C ~ 125°C
Approvals:	cURus
Melting I²t:	16
Breaking Capacity @ Rated Voltage:	100A
Mounting Type:	Surface Mount
Package / Case:	2-SMD, J-Lead
Series:	OMF 125
Voltage Rating - DC:	125V
Voltage Rating - AC:	125V
Current Rating:	7A
Fuse Type:	Board Mount (Cartridge Style Excluded)
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Fuses

3404.0019.11 Application Field and Working Principle

Fuses are electrical safety devices that have been around for many decades. They are designed to protect insulated electrical circuits against overcurrents by opening the circuit when an excessive current flows through them. Fuses are typically used in residential, commercial, and industrial applications to protect electrical systems from catastrophic failure due to short circuits, ground faults, or overloads, with the right ratings depending on the application. The 3404.0019.11 is an automotive fuse designed for general-purpose circuit protection.

Applications

The 3404.0019.11 automotive fuse protects 12-volt circuits in the automotive industry. This fuse is commonly used in automotive dashboard lighting, door/trunk opening controls, secondary air systems, windshield heaters, seat heaters, and interior trunk lighting applications. It is designed to protect these circuits against damage from short circuits, overloads, and ground faults.

Construction and Working Principle

The 3404.0019.11 automotive fuse is a cylindrical, hermetically sealed component made from a molded block of ceramic material with a metallic casing. This construction is designed to withstand the heat generated by high-current applications and provide better protection from dust, dirt, and corrosion. The working principle of the 3404.0019.11 automotive fuse is based on the principle that a fuse carrier is broken when an excessive current flows through it. When an overload occurs, the resistance of the fuse carrier increases, which in turn causes an increase in the temperature of the carrier until it reaches a melting or breaking temperature. This causes the fuse carrier to open, thus interrupting the circuit and preventing further damage.

Selection and Installation Considerations

When selecting and installing the 3404.0019.11 automotive fuse, several factors should be taken into consideration, such as the environment in which it will be installed, the operating current, and the amount of time the circuit will take to fault. For example, circuits that take more than 10 seconds to fault will require a higher voltage fuse. Additionally, for extreme environmental conditions, such as extremely hot or cold temperatures, waterproof fuses should be considered. When installing the fuse, the circuit should be designed to ensure that the fuse is capable of protecting the circuit from any overloads or ground faults. It is also important to ensure that the circuit is designed to work with the rating of the fuse, as a fuse with too low of a rating will not be able to protect the circuit against overloads or ground faults.

Conclusion

The 3404.0019.11 automotive fuse is an electrical safety device designed for general-purpose circuit protection. It is typically used in automotive applications to protect circuits from damage due to short circuits, overloads, and ground faults. When selecting and installing the fuse, several factors should be taken into consideration, such as the environment in which it will be installed, the operating current, and the amount of time the circuit will take to fault. Following these considerations will help to ensure that the 3404.0019.11 automotive fuse is properly installed and is capable of protecting the circuit from any overloads or ground faults.

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