SG328

Series:	SURGE-GARD™
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
R @ 25°C:	1 Ohms
Tolerance:	±25%
Current - Steady State Max:	30A
R @ Current:	15 mOhms
Approvals:	CSA, UR

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Inrush current limiters (ICL)are electrical components used to help prevent high inrush currents from damaging sensitive electronic components and circuits. The SG328 is an ICL designed for use in inverters, motor drives, power supplies, telecommunication systems, high-power lighting applications and any system that requires peak current protection. The SG328 ICL is widely used in a variety of applications due to its simple operation, low power dissipation, high reliability and low cost. It is a single-stage, cascading ICL that can be used in both constant-current and constant-voltage circuits. Its small size makes it ideal for space-restricted applications. The SG328 is widely used in telecommunication systems. It can be used to help limit current in high voltage surge protection devices. The SG328 can also be used as a surge generator in power line applications, providing a controlled level of current protection in critical surge protective devices. Additionally, the SG328 can be used to protect sensitive circuit components from inrush current in motor drives, power supplies and high-power lighting applications. The SG328’s working principle is based on the dynamic threshold principle, as defined by the requirements of the IEC 61000-4-12 edition 2 standard. The SG328 is designed with two metal oxide semiconductor field effect transistor (MOSFET) layers in a cascading circuit design. The first MOSFET layer is the active current limiters, which functions as a gate source voltage (GSV) controlled switch. When a positive voltage is applied across the gate source voltage, the MOSFETs open up, leading to a dynamically adjustable current limit value. The SG328 is designed to remain in open position until the current exceeds the maximum ICL value. Once this maximum value is exceeded, the SG328 will begin to reduce its current limiting value. This dynamic current limiting value is limited by the voltage across the gateway source. As the voltage increases, the ICL value moves towards the maximum value before it begins to drop again. The SG328 is designed to limit current surges to a safe value without negatively impacting the operation of the system. This is achieved through the limitation of the current for a defined period of time. Once the surge has passed, the ICL will reset itself and allow the system to carry on as normal.The SG328 inrush current limiter is a robust, cost-effective solution for protecting sensitive components and circuits from high inrush currents. Its dynamic current limiting value ensures that only safe levels of current flow through the system, without impacting performance. The SG328 is available in a small form factor and is ideal for applications where space is at a premium. The SG328 ICL is widely used in a variety of applications to limit inrush current and protect circuits from voltage surges. Its use in telecommunication systems, motor drives, high-power lighting applications and power supplies have proven to be highly effective and reliable. It is a robust and cost-effective solution to protecting sensitive components from the damaging effects of current surges. The SG328 inrush current limiter is easy to use and its dynamic current limiting values ensure that safe levels of current are maintained throughout the system. Its small form factor makes it ideal for space constrained applications. The SG328 is a reliable and cost-effective solution for limiting inrush current and protecting sensitive circuits.

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