SL10 4R004-B

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Inrush Current Limiters (ICL) are devices which are used to protect sensitive electronic components from effects of inrush current. The SL10 4R004-B ICL is a wide range of products providing an efficient solution in reducing inrush current of power supplies, load circuits, and electronic systems.

The SL10 4R004-B is a unique low-resistance ICL characterized by a low on-resistance rating more than one-tenth of that of conventional ICLs, allowing a large amount of current to flow with only a minimal drop in voltage. In addition, the ICL is designed with an inner electrostatic shield, making it immune to the effects of high-frequency noise and power disturbances. This shield acts as a Faraday cage, ensuring minimal noise and interference.

The SL10 4R004-B’s main application field is in the protection of sensitive electronic components including power supply diodes, MOSFETs, power transistors, capacitors, and other related components. By limiting the current surge at power-on or after fault conditions, the ICL can protect these components from overvoltage, overcurrent, and voltage transients.

The working principle of the SL10 4R004-B is based on its internal design of a pair of N-type metallic oxide semiconductor (NMOS) transistors operating in parallel, allowing current to pass through them and limit the inrush current. The NMOS transistors act as a switch, with minimal resistance at a certain voltage, allowing large amounts of current to flow while also maintaining low voltage drop.

In order to control the current flow, the SL10 4R004-B is equipped with a thermistor which acts as a temperature sensor. The thermistor is designed to shut off the current flow when the temperature exceeds a certain limit to avoid overheating of the ICL itself and other nearby components.

The SL10 4R004-B also incorporates an external fine adjustment circuit, allowing the user to adjust the variance of inrush current. The fine adjustment circuit offers precise control of the ICL operation, enabling the user to customize the ICL performance according to the specific application.

The SL10 4R004-B is an efficient and cost-effective solution for reducing inrush current of power supplies, load circuits, and electronic systems. The ICL utilizes its low on-resistance rating, internal electrostatic shield, and fine adjustment circuit to efficiently limit the inrush current and protect sensitive electronic components.

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