SG230 Circuit Protection

Series:	SURGE-GARD™
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
R @ 25°C:	20 Ohms
Tolerance:	±15%
Current - Steady State Max:	1.75A
R @ Current:	600 mOhms
Diameter:	0.500" (12.70mm)
Lead Spacing:	0.310" (7.87mm)
Approvals:	CSA, UR

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Inrush Current Limiters (ICL)

Inrush current limiters (ICL) are devices used to regulate and control the amount of current entering an electrical system. SG230 is a type of Inrush Current Limiting (ICL) device engineered to respond quickly to short duration overloads in current or voltage circuits.One of the primary applications of these components is in power distribution systems. For example, the SG230 has been widely used to protect power supplies from inrush current that can cause damaging damage. By limiting the inrush current, the device prevents the power supply from becoming overloaded when turned on or when under sudden load changes.The SG230 works on an active current limiting principle. This principle works by connecting a resistor in parallel with a semiconductor switch. When the current exceeds the set limit, the semiconductor switch is activated and prevents further current from flowing. This is why the SG230 is often referred to as a "current-only" limiter, as it does not respond to voltage changes.The SG230 has two types of response times: normal and fast. The normal response time is around 15ms, while the fast response time is around 4-7ms. The time determines how quickly the device will react to current surges.The SG230 also features temperature compensation, which helps ensure the reliability of the current limiting circuit. It has a temperature range of between -40°C and +85°C, ensuring its reliability in a wide range of operating temperatures.The SG230 has several distinct advantages over traditional current limiting devices. Firstly, the device is extremely compact, occupying a mere 4.2 cm2. Secondly, it has a low voltage, independent flat semiconductor therefore it is suitable for a wide range of loads, including motors and solenoids. Moreover, the SG230 is designed to be very efficient with low power losses due to its low on state voltage drop and short circuit protected output. This makes it a robust and reliable limiting device.Finally, the device has the ability to monitor its load and automatically adjust the current limit when necessary. This feature prevents the device from becoming overloaded and ensures the safety of the connected component or system under peak current conditions.In conclusion, the SG230 is a key component of many power supplies and systems. It is highly reliable and robust due to its temperature tolerance and current limiting capabilities. In addition, its small form factor makes it ideal for applications requiring a compact, efficient and cost-effective current limiter. By limiting inrush currents, SG230 ICLs protect components and systems from damage and ensure the safety of all connected components.

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