SG57

Series:	SURGE-GARD™
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
R @ 25°C:	5 Ohms
Tolerance:	±10%
Current - Steady State Max:	6A
R @ Current:	100 mOhms
Diameter:	0.6" (15mm)
Lead Spacing:	0.310" (7.87mm)
Approvals:	CSA, UR

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Inrush Current Limiters (ICLs) are devices that are designed to control the current flow into the device during the initial power-on stage and to protect downstream components from overcurrent damage. The SG57 is a type of Inrush Current Limiter (ICL) that is designed to provide reliable, fast, and cost-effective protection against overcurrents. The SG57 has a wide range of application fields, including data centers, medical equipment, aerospace systems, industrial automation platforms, and automotive electronics. The device can also be used in power supplies, motors, transformers, and generators. Due to its flexible design, the SG57 can be configured to meet various application needs for different power supply architectures. The working principle of the SG57 is based on its two main components: a positive temperature coefficient (PTC) thermistor and a resistor. The thermistor is a switch that is used to limit the current flow when it detects an overcurrent condition. The resistor is connected in series with the thermistor and is used to limit the current flow when the thermistor opens and breaks the circuit. The thermistor and the resistor are connected in series to form a series-resistance network, which is then connected in parallel with the power supply line. When the power is switched on, the thermistor is used to limit the current flow. The device allows a pre-defined current flow into the power supply line, but if the current exceeds this limit, the thermistor opens and breaks the circuit. This action reduces the current to a safe level and limits the inrush current to an acceptable amount. The SG57 can also be configured to suit various application needs, such as time-dependent current limiting. This type of configuration can be used to reduce the initial inrush current, but also maintain a steady current flow over time, providing greater reliability and protection. In addition to its ability to provide inrush current protection, the SG57 can also be used to protect downstream components from damages caused by overcurrents. The device allows only a safe current level to flow into the power supply line, preventing spikes and surges from damaging downstream components. Overall, the SG57 is an Inrush Current Limiter (ICL) that offers a number of benefits and features for a wide range of applications. The device is designed to provide fast, reliable, and cost-effective inrush current protection, as well as protection against high-current inrush damage. By offering a range of configurable options that can be tailored to the specific application needs, the SG57 is a versatile and effective Inrush Current Limiter.

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