TR/0603FA3.5A

Package / Case:	0603 (1608 Metric)
DC Cold Resistance:	0.022 Ohms
Size / Dimension:	0.063" L x 0.032" W x 0.019" H (1.60mm x 0.81mm x 0.48mm)
Color:	--
Operating Temperature:	-55°C ~ 125°C
Approvals:	CSA, UL
Melting I²t:	0.12
Breaking Capacity @ Rated Voltage:	35A
Mounting Type:	Surface Mount
Series:	CHIP™ 0603FA
Response Time:	Fast
Voltage Rating - DC:	24V
Current Rating:	3.5A
Fuse Type:	Board Mount (Cartridge Style Excluded)
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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TR/0603FA3.5A Fuses - Application Field and Working PrincipleFuses play an important role in the electric system, providing an essential level of protection against shorts and overloads. The TR/0603FA3.5A is a type of fuse intended for use in aerospace and military applications, such as in aircraft, satellites, and surface vessels. As it is manufactured to MIL-PRF-21022C found in the US Department of Defense standard MIL-DTL-89F, this type of fuse excels in low current applications. Here, we discuss the application field and working principle of the TR/0603FA3.5A fuse.Application FieldThe TR/0603FA3.5A is a micro-sized fuse designed for low-current protection in extremely demanding conditions. Its unique dual-string design helps reduce the size of the fuse but still provide necessary protection. This fuse can be used in a variety of applications, including digital and analog circuits, simulation scenarios, signal conditioning, and medical equipment. The TR/0603FA3.5A is designed to sustain extreme environmental conditions and meet the temperature shock requirement of 0℃ to 85℃.The TR/0603FA3.5A provides optimal performance to protect the system from a short-circuit, while maintaining the highest level of reliability during the most demanding and hazardous conditions. As these conditions often require very high-performance filaments, the TR/0603FA3.5A has been tested to the highest electrical and thermal standards to ensure its compliance with industry regulations and customer requirements.Working PrincipleThe TR/0603FA3.5A is a model of one-time-use fuses. When the electrical current passing through the circuit exceeds the rated value, the fuse filament melts, allowing the circuit to break and preventing further damage. The TR/0603FA3.5A provides effective protection against short-circuits and overloads with its 0.18mm wide filament.The fuse is designed with a dual-string design that greatly reduces its size without compromising performance. Each of the two strings consists of two copper layers and two layers of resin. The copper layers consist of copper and tin, which is an alloy with higher resistivity than Copper, which helps ensure the fuse will function correctly in critical applications, such as those found in the aerospace and military industries.The TR/0603FA3.5A also comes with a metal casing that helps protect the electrical connections from external shocks. The metal casing is sealed hermetically to protect the fuse from harsh external factors, such as high temperatures, corrosive liquids, and extreme pressure. The hermetic seal helps prevent contamination from entering the fuse and affecting its performance.ConclusionThe TR/0603FA3.5A is a type of micro-sized fuse that is designed for low-current protection. This fuse is ideal for use in rigorous conditions, such as those found in the aerospace and military industries. It has a unique dual-string design that allows it to reduce its size but still provide necessary protection. Additionally, it comes with a metal casing that helps protect the electrical connections from external shocks. This fuse is designed to meet very high standards and provides reliable protection against shorts and overloads.

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