B57364S0109M000

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Inrush current limiters (ICLs) are a class of electronic devices that are used to limit the instantaneous current when a device is energized. They can be used to protect against high in-rush currents, prevent nuisance tripping of circuit breakers, and improve power factor in power-factor-corrected systems. The B57364S0109M000 is an example of an inrush current limiter, and this article provides a brief description of its application field and working principle.

The B57364S0109M000 is designed to protect AC power connectors, such as those used in domestic and industrial appliances. It can also be used for current limitation in high-power DC converters or inverters that can be exposed to current over-load and short-circuits. The device operates with a voltage from 0 up to 500V AC, and is available in either through-hole (THT) or surface-mount (SMD) packages suitable for a variety of applications.

The working principle of inrush current limiters such as the B57364S0109M000 is relatively simple. A current-limiting resistor is connected in series with an AC line, and a switching element that is triggered by a hall effect sensor. When the device is energized, the current flowing in the line increases exponentially. This causes the current in the external circuit to rise above the device\'s rated current limit, which is sensed by the hall effect sensor and triggers the switching element to short out the current-limiting resistor, limiting the current flowing in the line.

When the over-current condition subsides, the current-limiting resistor is disconnected, allowing the current in the line to reach its peak value. The peak current and the time it takes to reach this peak are determined by the device\'s design parameters, such as the resistance of the current-limiting resistor.

The B57364S0109M000 is designed to provide protection in case of both over-current and over-voltage conditions, and its operation is temperature compensated to ensure stability over a wide temperature range. The device also has protection against short-circuits, as well as protection against transients and surges.

In summary, the B57364S0109M000 is an inrush current limiter that provides over-current and over-voltage protection for applications such as AC power connectors, high-power DC converters, or inverters. Its working principle is based on a current-limiting resistor and a switching element that is triggered by a hall effect sensor when an over-current condition is detected. The device offers short-circuit protection as well as protection against transients and surges, and it operates with a voltage range from 0 up to 500V AC.

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