PTGL07AR4R6H2B51A0

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PTC Resettable Fuses are electrical current protectors designed to instantly trip when the current passing through them reaches a predefined threshold. The base of the fuse consists of a thermistor material that, when heated by the current passing through it, experiences a change in its shape and thus, its electrical characteristics. When the current reaches a critical peak or the voltage goes above a certain threshold, the fuse trips and breaks the circuit it is protecting. The PTGL07AR4R6H2B51A0 is a PTC Resettable Fuse developed by Littelfuse.

The PTGL07AR4R4R6H2B51A0 is a 5A, 250V, 6-pin radial leaded, slow-blow, surface-mount Fuse designed primarily for use in consumer electronics. This Fuse is suitable for use in applications such as hard drives, computers, retail displays, and medical equipment. With its low profile, the PTGL 07AR4R6H2B51A0 allows for miniaturization of circuit assemblies, enabling the use of smaller, lighter, and more efficient components. The Fuse is also designed for high surge current protection and has a wide operating temperature range from -40°C to +125°C.

In order to protect circuits and components from electrical damage, the working principle of the PTGL07AR4R6H2B51A0 and other PTC resettable fuses is based on the use of a chalcogenide material that undergoes a reversible structural change when exposed to electrical currents above a certain threshold. The temperature of the material quickly increases due to the electrical current, causing it to melt and expand into a crystalline structure, which in turn causes the electrical resistance of the material to increase significantly and thus trip the Fuse. By increasing the amount of current or voltage, the chalcogenide material will eventually erode away and the circuit will open.

Once the thermal overload or surge in the current is removed, the chalcogenide material slowly cools back down and reforms its original crystalline structure, thus restoring the circuit. The PTGL07AR4R6H2B51A0 Fuse has a thermal recovery time range from 3 to 8 seconds, allowing it to detect and recover from short-term current surges. The Fuse is also RoHS compliant, making it safe for use in electronics with high-voltage circuits.

The PTGL07AR4R6H2B51A0 is suitable for use in a variety of consumer electronics applications such as computers, hard drives, medical equipment, communications systems, and retail displays. The Fuse is designed to detect and protect against current surges and has a wide operating temperature range from -40°C to +125°C. The Fuse also features a low profile which allows for miniaturization of circuit assemblies. Finally, the Fuse is RoHS compliant, making it safe for use in electronics with high-voltage circuits.

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