Time to Trip:	15.6s
Approvals:	cURus, TUV
Lead Spacing:	0.402" (10.20mm)
Thickness (Max):	--
Size / Dimension:	0.780" Dia x 0.120" W (19.81mm x 3.10mm)
Package / Case:	Radial, Disc
Mounting Type:	Through Hole
Ratings:	--
Operating Temperature:	-40°C ~ 85°C
Resistance - Post Trip (R1) (Max):	130 mOhms
Resistance - Initial (Ri) (Min):	50 mOhms
Series:	POLY-FUSE®, 72R
Current - Trip (It):	5A
Current - Hold (Ih) (Max):	2.5A
Current - Max:	40A
Voltage - Max:	72V
Type:	Polymeric
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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PTC Resettable Fuses

PTCs (positive temperature coefficient) resettable fuses are solid-state devices with low internal resistance. They are also known as polymeric fuses and are used extensively in circuit protection applications. One particular type of PTC resettable fuse, the 72R250XF, is found in applications such as digital and analog circuits in consumer electronics, industrial control systems, automobiles and other electrical/electronic equipment.The 72R250XF device is an integral part of overcurrent and thermal protection in devices such as portable electronics, batteries, and other devices. It provides a fast response to changes in overcurrent and prevents damage from overheating due to short circuit. It offers an advantage over other overcurrent and thermal failure protection mechanisms, as it can be reset using the device reset button, thereby allowing the device to resume normal operation quickly.The 72R250XF is a surface mount device with a low insertion loss, making it suitable for high-frequency operation. The device provides protection over a wide temperature range and is available in three versions; with a reset time of 0.8, 1.5 or 2.2 seconds. It also comes with integrated bypass and pull-up resistors, making it easier to integrate into larger systems.The working principle of the device is based on the combination of a PTC thermistor and an SCR (silicon controlled rectifier). When the circuit is powered, the two components interact creating a negative temperature coefficient (NTC) that limits the level of current flowing through the circuit. If the current is too high, the thermistor\'s resistance increases and the current, and thus the power will be limited. The SCR then senses the current imbalance and shuts down the circuit.When the current is reduced, the two components relax and the thermistor\'s resistance decreases again. The SCR then allows the current to flow back in the circuit, resetting the device. This resetting process is very fast, allowing the device to react quickly to changes in current. The 72R250XF has several applications in various industries and applications. In automotive and industrial electronics, it is used in battery monitoring and protection circuits, power converters and other high-current applications. In consumer electronics, it can be used in protection circuits for digital media players, game consoles, and other portable devices.The 72R250XF can also be used in industrial control systems for overcurrent and thermal protection. It can also be used in medical imaging, lighting controls, fire systems, and other applications requiring overcurrent and temperature protection.The 72R250XF is a reliable, cost effective device that provides fast, reliable overcurrent and thermal protection. With its fast reset time and wide temperature range, it is a robust and cost-effective device that is suitable for a wide variety of applications. The device is easy to integrate into existing systems, and offers superior reliability, making it the ideal solution for circuit protection.

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