SL15 12102

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Inrush Current Limiters (ICLs) are devices that protect sensitive electronic components from large currents caused by inrush when the power is first connected. A very common example is the protection of a hot-swap circuit board, where large inrush currents can occur if the circuit board is suddenly connected or disconnected from the power supply.

The SL15 12102 is part of a series of Inrush Current Limiters developed by Alpha Power Solutions, Inc. This device consists of four components: a high-power transistor, two fuse-type resistors, and a transient suppression diode. These components work together to limit inrush current by creating a low resistance path across the power supply.

The high power transistor is used to control and reduce the amount of current flowing through the circuit board. When the power is first turned on, the transistor is activated and sets up a low resistance path across the power supply. This reduces the current flowing through the circuit board to a predetermined level, protecting the sensitive components from any damage caused by excessive power.

The two fuse-type resistors are connected in series between the high-power transistor and the power supply. They act as current limiters, limiting the amount of current that is allowed to flow through the circuit board. If inrush current is detected, these resistors will open up and reduce the current level. This prevents any damage to the sensitive components.

The transient suppression diode is a two-terminal device that is used to reduce the flow of current when an inrush current limiters are active. It acts as a protective shunt, allowing the current to bypass the circuit board and preventing it from causing any damage to the sensitive components. The transient suppression diode also helps to reduce the noise generated by the high-power transistor.

The SL15 12102 Inrush Current Limiter is a compact device that provides reliable protection for sensitive electronic components. It is able to limit the current to a predetermined level, protecting the components from any damage caused by excessive power. The high-power transistor, fuse-type resistors, and transient suppression diode work together to provide reliable and cost-effective protection for sensitive components.

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