PFMF.050.2 Circuit Protection

Resistance - Initial (Ri) (Min):	150 mOhms
Approvals:	cURus, TUV
Lead Spacing:	--
Thickness (Max):	0.033" (0.85mm)
Height - Seated (Max):	--
Size / Dimension:	0.179" L x 0.128" W (4.55mm x 3.24mm)
Package / Case:	1812 (4532 Metric), Concave
Mounting Type:	Surface Mount
Ratings:	--
Operating Temperature:	-40°C ~ 85°C
Resistance - Post Trip (R1) (Max):	1 Ohms
Series:	PFMF
Time to Trip:	150ms
Current - Trip (It):	1A
Current - Hold (Ih) (Max):	500mA
Current - Max:	100A
Voltage - Max:	15V
Type:	Polymeric
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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PTC Resettable Fuses are small, self-powered devices that protect electronic circuits from overcurrent faults. PTCs are designed to open in the event of an overcurrent, allowing a current or voltage limit to be maintained. PFMF.050.2 is a type of PTC Resettable Fuse that is used in telecommunications applications. It is a noncontact, solid-state device that is completely encapsulated in a molded package. The fuse offers excellent protection from arc-over and hot switching which could lead to board damage or component damage or even system failure. The PFMF.050.2 offers electronic-grade reliability with its robust construction. This type of PTC Resettable Fuse has a robust design that offers extremely low resistance, fast response and superior performance in high current applications. It is also designed to minimize inrush current and reduce thermal shock. The fuse is compact and lightweight, making it ideal for applications in telecommunications and other electronics fields. The PFMF.050.2’s application field includes telecommunications and other electronic applications that need a small, self-powered PTC Resettable Fuse for protection. In telecommunications applications, it provides protection from overvoltage, overcurrent, and hot switching. It can also be used in applications that require significantly fast response times, such as computer systems and power supplies.The working principle of the PFMF.050.2 is based on the principle of thermal-magnetic protection. The fuse has a temperature compensated thermal element which acts as a “thermal fuse” to open the electrical circuit when an overcurrent passes through it. The fuse also has a magnetic element which works as a “backup fuse” and triggers when the thermal element is not sufficient to open the electrical circuit. This dual protection mechanism ensures that the circuit is protected against overcurrents. When the fuse senses an overcurrent, the thermal element heats up to a set temperature. When the temperature reaches a predetermined level, the fuse opens the electrical circuit and prevents further overcurrents. The fuse will remain open until the current is reduced below the activation current. When the current is reduced, the thermal element cools down and the fuse automatically resets, allowing the current to pass through the circuit. The PFMF.050.2 is ideal for a variety of telecommunications and other electronic applications that require efficient, reliable, and secure protection. The device is small, lightweight and self-powered, making it easy to install and use. The dual protection mechanism offers superior protection from overcurrents and other fault conditions, while the resettable functionality ensures that the circuit is quickly restored after a fault is detected.

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