0665.800HXLL

Package / Case:	Radial, Can, Vertical
DC Cold Resistance:	0.121 Ohms
Size / Dimension:	0.335" Dia x 0.333" H (8.50mm x 8.45mm)
Color:	--
Operating Temperature:	-40°C ~ 85°C
Approvals:	CSA, UL
Melting I²t:	4.05
Breaking Capacity @ Rated Voltage:	50A
Mounting Type:	Through Hole
Series:	LT-5™ 665
Response Time:	Slow
Voltage Rating - AC:	250V
Current Rating:	800mA
Fuse Type:	Board Mount (Cartridge Style Excluded)
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction

If your power supply or electronic device is at risk of damage from overcurrent, a fuse can be used to protect it from being damaged. The 0665.800HXLL is one such fuse designed to protect your valuable equipment by automatically disconnecting electricity when the current reaches a predefined quantity. This article will examine the application field and working principle of the 0665.800HXLL fuse.

Overview of the 0665.800HXLL Fuses

The 0665.800HXLL fuse is a type of fuse specifically designed to protect low voltage, current-limited electronic components from overload or short circuit. These fuses are UL recognized and rated for use in appliance-level rated consumer electronics, motors, and other low-voltage electronic applications. They are designed to automatically disconnect the power from the circuit when a predetermined amount of current is present. This fuse is available in both a direct-acting (DA) and delayed-action (DD) model. The DA model means the fuse will trip when the current reaches a certain preset limit. The DD model offers two time-delay curves, meaning one operates at a short delay time and the other operates at a longer delay time. Regardless of which model is chosen, all 0665.800HXLL fuses are designed to operate at high interrupt ratings. The 0665.800HXLL is a very small fuse, especially in comparison to other types and sizes of fuses. It measures just .8 mm by 6.5 mm, making it small enough to be used in tight spaces or in applications with limited space. It is also capable of withstanding temperatures of up to 125 degrees Celsius and it is rated at up to a 1000 volts, making it suitable for a variety of applications.

Applications of the 0665.800HXLL Fuse

The 0665.800HXLL fuse is often used for protecting sensitive, current-limited electronic devices such as low-voltage consumer electronics, motors, and other low-voltage electronic components. It is a popular choice for medical equipment, industrial and commercial equipment, household appliances, and telecommunications equipment. Additionally, the small size of the fuse makes it a suitable choice for applications where space is limited.

Working Principle of the 0665.800HXLL Fuse

The 0665.800HXLL fuse works by disconnecting the power to the circuit when a predetermined amount of current has been reached. The DA model is designed to trip when the current reaches the preset limit while the DD model offers two time-delay curves, offering varying degrees of protection depending on the requirements of the application. The fuse also contains a metal strip that is designed to heat up when the current reaches a certain amount. This heat causes the metal to expand, creating a break in the current flow. This will immediately disconnect the power to the electronic device, preventing any further damage or harm.

Conclusion

The 0665.800HXLL fuse is designed to be a reliable and efficient method of protecting low voltage, current-limited electronic components from overload or short circuit. This small fuse is capable of withstanding temperatures of up to 125 degrees Celsius and has a 1000-volt rating, making it suitable for a variety of applications. Additionally, the 0665.800HXLL fuse features two time-delay curves for enhanced protection, depending on the requirements of the application.

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