SL12 20003-A

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Inrush current limiters (ICL) are devices typically used in power supply circuits used to control large currents that flow when power is applied to an electrical circuit. This excess current is referred to as inrush current and can cause damage to the components and affect the performance of the circuit. SL12 20003-A is an ICL specifically designed for application in space-limited power supply designs and is a commonly specified component for DC/DC converters.

The SL12 20003-A has a limited on-state resistance and is typically used in series with the load. Its peak current rating is 7.8A and its peak voltage rating is 37.5V. The active components of the ICL are NTC thermistors. These thermistors function as resistors in series with the load and are temperature-sensitive. When triggered, the NTC thermistors undergo a drastic resistance decrease, thus limiting the current flowing through the circuit. When the temperature reaches approximately 100°C, the thermistors begin to cool down and again decrease in resistance, allowing the ICL to return to its normal state and allow normal current to flow through the circuit.

The SL12 20003-A incorporates a custom heating element that improves the ICL’s response. The heating element ensures that the NTC thermistors self-regulate and minimize the allowable inrush current. It also ensures that the ICL recovers quickly after the initial current surge. It is designed for a broad range of applications. It is suitable for power supplies, DC/DC converters, resistive loads and loads with inductance. Additionally, it is suitable for applications with limited space such as laptop power supplies, automotive systems, gaming consoles, and communications equipment.

The SL12 20003-A is an effective component for protecting components from damage caused by inrush current. It is simple to install and requires minimal maintenance. Furthermore, it has a low profile making it suitable for use in cramped spaces. Its design ensures that it can withstand high temperatures without being affected and its quick response time and recovery rate make it a reliable choice for power protection.

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