PTCCL09H191HBE

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PTC Resettable Fuses are commonly used in automotive and consumer electronics applications for protection against over-current, over-temperature and over-voltage faults. When an abnormality, such as an over-current or over-temperature event, occurs, the PTC will heat up and change from a low-resistance state to a high-resistance state. This will increase the electrical resistance and reduce the current, preventing damage to the electrical equipment. The PTCCL09H191HBE is a popular type of PTC Resettable Fuse.

The PTCCL09H191HBE is a self-resetting, surface-mount, current-limiting, polymeric PTC fuse with a hold current of 19 A and hot-to-off resistance (IH-IO) of 5ohms. The fuse is rated for an operating temperature range of -55 °C to 125 °C and an operating voltage range of 6 V to 32 V DC. It can be used in a range of applications such as automotive electronics, consumer electronics, industrial electronics, power supplies, lighting, and medical equipment.

The working principle of the PTCCL09H191HBE is similar to that of other PTC fuses. When the circuit current exceeds its preset hold current, the temperature of the fuse element increases and the resistance of the element increases, limiting further current flow. When the current and temperature return to their normal values, the high resistance state will be reset. Unlike fuses and circuit breakers, the PTC resettable fuse does not need to be manually reset after the fault condition is cleared.

The PTCCL09H191HBE is an excellent choice for electrical protection in a variety of applications. It is durable and reliable and is able to repeatedly reset itself without any manual resetting, saving time and effort. In addition, its low hot-to-off resistance and low power dissipation means that it can offer maximum protection with minimal energy cost.

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