PTGL7SAS2R7K2B51B0

Resistance - 25°C (Typ):	2.7 Ohms
Approvals:	--
Lead Spacing:	0.197" (5.00mm)
Thickness (Max):	--
Height - Seated (Max):	0.484" (12.30mm)
Size / Dimension:	0.287" Dia x 0.138" T (7.30mm x 3.50mm)
Package / Case:	Radial, Disc
Mounting Type:	Through Hole
Ratings:	--
Operating Temperature:	-30°C ~ 125°C
Series:	POSISTOR®, PTGL
Current - Trip (It):	565mA
Current - Hold (Ih) (Max):	425mA
Current - Max:	4.5A
Voltage - Max:	30V
Type:	Ceramic
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	--

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PTC Resettable FusesPTC (positive temperature coefficient) resettable fuses are devices used to protect electrical circuits and other components from overload or short circuits. The fuse is typically composed of semiconductor materials, and it includes a special low-resistance element that is temperature-sensitive. When the current passing through the element exceeds the maximum rating, the fuse will heat up and trip. The threshold of the trip is set at a predetermined value, and the trip threshold is referred to as the hold current. PTGL7SAS2R7K2B51B0 Application FieldPTGL7SAS2R7K2B51B0 resettable fuses are used in a variety of applications, including automotive, home theater, medical equipment, power supplies, computers, and other consumer electronics. These fuses are ideal for applications with higher currents and power output, and they provide excellent protection against short-circuits, overloads, and spike voltages.Working PrincipleThe working principle of the PTGL7SAS2R7K2B51B0 resettable fuse is fairly simple. The fuse is composed of two elements: a semiconductor material and a temperature-sensitive resistor. When a current spikes or overloads, the temperature-sensitive resistor element trips, cutting off the current passing through the fuse element. The element then cools off and the fuse is reset. The temperature-sensitive resistor is usually composed of a conductive polymer, such as polyvinylidene fluoride (PVDF).The features of the PTGL7SAS2R7K2B51B0 resettable fuse include a high temperature rating, a low temperature coefficient, and a high power rating. The temperature rating of the device is 135°C, and the power rating is 7A. The maximum operating voltage of the device is 2.7KV, and the hold current is 51mA. The device also has a fast response time, ensuring that the fuse trips before the damage is caused by the overload. AdvantagesThe PTGL7SAS2R7K2B51B0 resettable fuse has many advantages compared to other types of fuses. It is more durable and reliable than traditional non-resettable fuses, as it can be reset multiple times, meaning it will not need to be replaced. It is also much smaller in size compared to other fuses, making it easier to install. Additionally, the temperature sensitive resistor element will trip at a much lower temperature than other types of fuses, providing better protection for the system. ConclusionThe PTGL7SAS2R7K2B51B0 resettable fuse is an advanced and reliable way to protect electrical systems from overload or short circuit failure. It is a useful device in a variety of applications, from automotive to medical equipment, and can be used where a fast response time and high power rating are required. The device also has many advantages over other types of fuses, as it can be reset, is small in size, and has a low operative temperature for better protection against overloads.

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