PTGL09BD4R7N2B51A0

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PTC Resettable Fuses, also known as Polyfuse are a unique kind of semiconductor device that combines the advantages of an electronic fuse and a resettable fuse, creating a new, useful and cost-effective component for safety circuit protection. The PTC Resettable Fuses, represented by the model PTGL09BD4R7N2B51A0, have a wide range of application fields but most commonly are used in consumer electronic products; such as electronic toys, power supplies for computers, power supplies for audio equipment, digital cameras, electronic games, VCRs, and home appliances. PTC fuses are also becoming a preferred choice for use in automobiles.

Generally speaking, PTC Resettable Fuses are constructed with multiple layers of polymer film that forms a resistor-like circuit path. When the current running through the fuse exceeds its specified value, the polymer film layers heat up and increase their resistance; this is what trips the device and shuts down the circuit. This self-contained action of the PTC Resettable Fuse helps to prevent further damage or even complete failure of the circuit.

PTCs are typically used in low to medium current circuits as they have a higher resistance at higher currents. The model PTGL09BD4R7N2B51A0 is in fact rated at 9.0V, with a rated current of 4A, and a reset voltage of 0.14V. The device takes up relatively little space, 6.6mm x 4.8mm, making it ideal for applications requiring tight space restrictions. The PTC Resettable Fuse also offers protection from short circuits, overvoltage, and overtemperature conditions, making it an extremely reliable and dependable choice of protection for appliances that use a low current.

One of the main advantages that come from using the PTC Resettable Fuse is that it can be reset and reused. After the device has tripped and the overcurrent condition has been removed, the fuse will automatically reset itself without having to replace it. This is greatly beneficial over standard fuses that require replacement each time a fault is detected. The PTGL09BD4R7N2B51A0\'s has a very fast response time too, under 0.25 seconds in most cases, and a low power consumption as no extra voltage is required for the fuse to reset itself.

The construction of the PTGL09BD4R7N2B51A0 model includes an LED, which is used to indicate the current status of the fuse. If the LED displays green, the fuse is healthy and the circuit is safe to operate; while a red LED indicates that the fuse has tripped and no current is running through it. Ultimately, this feature helps to simplify the diagnosis of an electrical problem as it quickly identifies if there is a fault in the circuit.

In conclusion, the PTC Resettable Fuse is a highly reliable and cost-effective solution for applications requiring low to medium current protection. Provided by the model PTGL09BD4R7N2B51A0, which offers fast response times and low power consumption; it is suitable for a variety of electronic consumer products. Furthermore, it\'s ability to reset itself and an indicator LED to help diagnose faults makes it an ideal choice for a safety circuit protection device.

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