Resistance - Initial (Ri) (Min):	120 mOhms
Approvals:	cURus, TUV
Lead Spacing:	0.201" (5.10mm)
Thickness (Max):	--
Height - Seated (Max):	0.780" (19.80mm)
Size / Dimension:	0.535" Dia x 0.122" W (13.58mm x 3.10mm)
Package / Case:	Radial, Disc
Mounting Type:	Through Hole
Ratings:	--
Operating Temperature:	-40°C ~ 85°C
Resistance - Post Trip (R1) (Max):	300 mOhms
Series:	POLY-FUSE®, 72R
Time to Trip:	9.6s
Current - Trip (It):	2.7A
Current - Hold (Ih) (Max):	1.35A
Current - Max:	40A
Voltage - Max:	72V
Type:	Polymeric
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Box (TB)

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PTC Resettable Fuses

PTC Resettable Fuses, commonly known as polyfuse, are a form of current-limiting circuit protection device that protect a device from being overloaded by an excessive current. They are used to protect the circuit from current surges, shorts and faulty wiring. Unlike traditional fuses, they are self resetting and do not need to be replaced once it has blown.The 72R135XMR is a PTC Resettable Fuse designed for Low Voltage DC applications. It is a miniature form factor, allowing it to fit in tight spaces such as small motors, portable lighting and battery operated equipment. It is offered in a wide variety of rated currents, ranging from 0.2A to 16A, making it ideal for a wide variety of applications.The 72R135XMR is designed to trip at a specific temperature, determined by the ambient temperature of the application and the rated current of the fuse. The internal PTC element within the device heats up when an excess amount of current passes through it, causing the PTC element to reach its trip temperature and then trip the fuse. Once the current is removed, the PTC element will cool down and will automatically reset itself. This allows the device to be used in applications that require frequent overcurrent protection. The PTC Resettable Fuse also provides protection against over temperature protection and reverse polarity protection. It is designed to fail open which means in case of an over temperature event, the current will be blocked to the end point device and will not damage it, thus ensuring the life of the end point device and any other applications involving it. The 72R135XMR is also designed to fail open in case of reverse polarity which in turn protects the application from any damage. The 72R135XMR is UL certified, meets RoHS requirements and is fully compliant with the IEC/EN standards. It is available in both surface mount and through hole packages, allowing it to fit any PCB layout and size. In conclusion, the 72R135XMR PTC Resettable Fuse offers reliable protection for a wide variety of applications. It is a reliable, accurate and compact device that offers circuit protection from overcurrent, over temperature and reverse polarity. The device is UL certified, meets RoHS requirements and is fully compliant with the IEC/EN standards. It is designed to seek and protect the user from faulty circuits and wiring and offers a cost effective solution for manufacturers.

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