045903.5UR Circuit Protection

Response Time:	Fast
DC Cold Resistance:	0.024 Ohms
Size / Dimension:	0.285" L x 0.170" W x 0.120" H (7.24mm x 4.32mm x 3.05mm)
Color:	--
Operating Temperature:	-55°C ~ 125°C
Approvals:	CSA, UL
Melting I²t:	1.65
Breaking Capacity @ Rated Voltage:	50A AC, 300A DC
Mounting Type:	Surface Mount
Package / Case:	2-SMD, J-Lead
Series:	PICO® 459
Voltage Rating - DC:	125V
Voltage Rating - AC:	125V
Current Rating:	3.5A
Fuse Type:	Board Mount (Cartridge Style Excluded)
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Fuses are commonly used for electrical and electronic safety applications. A fuse is an electrical safety device designed to protect electrical circuits and equipment from damage due to excessive current, overload, or short circuit. Fuses are essential components in electrical systems in residential, commercial, and industrial facilities.In the past, most fuses were made of standard thermoplastic material. But in recent years, fuses made of more modern, non-plastic materials have been developed to handle higher currents and temperatures, as well as provide better safety and reliability.The 045903.5UR is a heat-resistant fuse designed for high-temperature applications. It is a small glass/ceramic fuse with a built-in wire coil that can handle currents up to 25A. The 045903.5UR has a wide application field and is typically used in industrial applications such as motor-control systems, solar power systems, and railway DC traction systems.The working principle of the 045903.5UR is quite simple. The fuse acts as a link between two conductive parts: the internal wire coil and the outer element. When the current reaches a certain level, the internal wire coil heats up and melts the fuse link. The melting of the fuse link causes a sharp drop in current, which protects the circuit by disconnecting the two conductive parts.The 045903.5UR has a number of advantages over its alternatives. It is small, which provides increased flexibility in its applications. It also has a very fast response time, which ensures quick and safe circuit protection. Finally, it is highly dependable, as it is encased in a sealed and protected assembly.Despite its advantages, the 045903.5UR also has some drawbacks. Its small size can be limiting in some applications, and it is not suitable for use in certain moisture sensitive applications. Additionally, the 045903.5UR is expensive compared to other fuses.All in all, the 045903.5UR is an effective and dependable fuse for most industrial applications. It has a wide application field and fast response time, making it an ideal choice for high-temperature and high-current applications. The 045903.5UR can ensure safe, reliable, and cost-effective protection of electrical circuits and equipment.

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Part Number	Manufacturer	Price	Quantity	Description