PTGL07AS3R3K3B51B0

PTC Resettable Fuses are a type of electrical fuse that automatically resets itself and can see increased applications in over-current protection devices. The main components of a PTC Resettable Fuses are the PTC element, the wiring, and a thermal protector. The PTC element is normally the polymeric positive temperature coefficient (PPTC) type, which consists of an organic resin and particles with different electrical characteristics added to the resin in order to cause a positive temperature coefficient.

PTGL07AS3R3K3B51B0 Application Field and Working Principle

The PTGL07AS3R3K3B51B0 is a type of PTC Resettable Fuse designed by Littelfuse, Inc. It is rated at 0.075 amp, 250V, and has a lead length of 100mm. It is commonly used as a component in UPS systems, refrigerator controllers, and as over-current protection devices in other electrical and electronic equipment.

The working principle of the PTGL07AS3R3K3B51B0 is based on the PTC element in its design. When the temperature of the PTC element exceeds its positive temperature coefficient, it begins to conduct current. This current causes a rapid heating of the PTC element, which results in an increase in its resistance. This rise in resistance prevents further current flow, thus limiting the overall current and protecting the circuit from damage. Once the over-current condition has been eliminated, the PTC element cools down, causing its resistance to drop, and resetting the device for reuse.

The PTGL07AS3R3K3B51B0 is available in both radial and axial lead configurations, allowing for flexibility in its integration into various applications. In addition to over-current protection, the PTC element also provides limiting of inrush currents, protection against electrostatic discharges, and transient voltage protection. As a result, the PTGL07AS3R3K3B51B0 provides complete and reliable over-current protection for a wide range of applications.