Package / Case:	5mm x 20mm
DC Cold Resistance:	2.1 Ohms
Size / Dimension:	0.201" Dia x 0.787" L (5.10mm x 20.00mm)
Color:	--
Operating Temperature:	-55°C ~ 125°C
Approvals:	CE, CSA, UL
Melting I²t:	1.09
Breaking Capacity @ Rated Voltage:	100A
Mounting Type:	Holder
Series:	5TT
Response Time:	Slow
Voltage Rating - AC:	250V
Current Rating:	300mA
Fuse Type:	Cartridge, Glass
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Fuses

Introduction

Fuses are a type of electrical device that are designed to prevent over-current and short circuit type currents from damaging circuits in case of over current or short circuit, the fuse will blow and thus disconnect the circuit when the currents become too high. 5TT 300 is a type of fuse which is used for applications ranging from making a circuit breakers and over current protection devices.

Application field and Working Principle

5TT 300 fuse is commonly used in applications ranging from automobiles, consumer electronics, power machinery and industrial equipment. 5TT 300 fuses are designed to allow the safe passage of the normal max current while restricting the passage of excessive currents which may cause damage to the circuit.Working principle of 5TT 300 fuses is to protect the circuit from damage that may be caused due to over current or short circuits. 5TT 300 fuse consists of a metal strip that has been designed to melt under extreme conditions, which is known as fusible element. The metal strip in the fuse is connected to two terminal ends which are usually made of brass or copper.When the current running through the circuit reaches above the maximum desired limit, the metal strip in the fuse melts due to the heat generated by the current, thus disconnecting the circuit. The duration and current ratings of the fuses are determined by the rating of the fuse. 5TT 300 fuses come in various ratings, such as 3 A, 5 A, 10 A, 15 A and 20 A.

Advantages

The advantage of using 5TT 300 fuses is that they offer a relatively lower cost compared to other types of circuit protection devices. 5TT 300 fuses also offer quick response time compared to other types of circuit protection devices. They are also designed to be robust and rugged, so they can be used in tough environments such as automotive applications.Another advantage of using 5TT 300 fuses is that they have the ability to detect minor faults in the circuit. Since the fuses are designed to blow at specific current levels, they can help to detect small faults such as open circuits which could otherwise be missed by other circuit protection devices.

Disadvantages

One of the main disadvantages of 5TT 300 fuses is that they are more prone to failure compared to other circuit protection devices. This is mainly due to the fact that they have no way to reset themselves after a current surge, so they must be replaced after each surge.Another disadvantage is that they do not provide protection from other forms of damage. Although the fuses will provide protection from current surges, they do not provide protection from other forms of damage such as corrosion or oxidation. Additionally, the fuses can also be damaged by voltage surges, so it is important to use other types of circuit protection devices in conjunction with the 5TT 300 fuse.

Conclusion

5TT 300 fuses are a type of circuit protection device that offer a relatively low cost option for protecting circuits from over current and short circuit type conditions. They offer quick response time as well as the ability to detect minor faults in circuits. However, they are more prone to failure compared to other circuit protection devices and do not provide protection from all types of damage. It is important to use other circuit protection devices in conjunction with 5TT 300 fuses to ensure the safety and reliability of the circuits.

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Part Number	Manufacturer	Price	Quantity	Description