PTGL09ARR33M1B51A0

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PTC Resettable Fuses, formally known as polymeric positive temperature coefficient (PPTC) resettable fuses, are devices used to protect circuits, while allowing high-current spikes. PTC resettable fuses can be placed in electric circuits to protect them from over-currents. When the circuit experiences an over-current, an electrical resistance in the device increases and the current is limited to a safe level. The fuse then automatically resets after the fault is cleared. This makes these devices a valuable addition to any electrical circuit.

The PTGL09ARR33M1B51A0 is a solid state PTC resettable fuse from Littelfuse Inc. It is a current-limiting fuse that is specifically designed for protection of electronic circuits. The device is a 9 Amp, 4Vdc, single-pole, PTC Resettable Fuse. It features open-circuit voltage of 6Vdc, an operating temperature range of -40°C to +130°C, and a maximum operating current of 9A.

The PTGL09ARR33M1B51A0 is used in a wide variety of applications, including automotive and lighting systems, medical and military equipment, consumer electronics, and other communications and industrial control equipment. It is also used for protection of switched mode power supplies, as well as for supplemental over-current protection of other components. In addition, it can be used as a circuit board mounted component for protection of entire systems.

The working principle of the PTGL09ARR33M1B51A0 is based on the PTC\'s ability to limit currents when an over-current occurs. The device has a bimetallic snap-action constructed of two different metals. When exposed to heat, the two metals begin to expand. As they expand, the gap between the two metals increases, and the current flow is limited. When the current drops below the threshold level, the gap is restored and the device automatically resets.

The PTC Resettable Fuses, and the PTGL09ARR33M1B51A0 in particular, offer many advantages for circuit protection. It is a compact and cost-efficient way to protect circuits from over-currents and ensure that the circuit operates at a safe level. In addition, the device can handle high-current surges and is self-resetting, which is beneficial in applications that need to be monitored regularly for over-currents. The device also provides reliable protection for even the most sensitive electronic components, making it an ideal choice for a variety of applications.

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