B57464S0109M000

Series:	--
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
R @ 25°C:	1 Ohms
Tolerance:	±20%
Current - Steady State Max:	20A
Diameter:	1.024" (26mm)
Lead Spacing:	0.295" (7.50mm)
Approvals:	--

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Inrush Current Limiters (ICL)

B57464S0109M000 Application Field and Working Principle

Inrush current limiters (ICL) are electronic components designed to prevent potentially damaging current surges in a circuit. In this way, they can protect other circuit components such as motors, relays, or transformers from inrush current that could cause them to malfunction or fail due to thermal stress. The B57464S0109M000 is a ICL manufactured by EPCOS that is specifically designed for inverter, UPS, and Solar Inverter applications. In this article, we will discuss the application field and working principle of the B57464S0109M000.

Applications

The B57464S010M000 is designed to limit the start-up current in inverter, UPS, and solar inverter applications. It is used in these applications in order to protect the components from potentially damaging inrush currents. It is also designed to reduce the inrush current overshoot, which can cause pins to be pulled out from their respective connectors, or components to be damaged or destroyed due to excessive heat.The B57464S0109M000 is also used in automotive applications, such as car audio systems, car navigation systems, and car air conditioners. By limiting inrush current in the automotive application, it can reduce the risk of damage to other onboard components.

Working Principle

The B57464S0109M000 Inrush Current Limiter is a current sensing device that works using a temperature-controlled switching via a negative temperature coefficient. This component features a 4-pin configuration and consists of two components, an NTC thermistor and a resistor.When power is supplied to the device, the NTC thermistor initially acts as a short circuit, allowing the full inrush current to flow through. As the inrush current flows through the device, it heats up the NTC thermistor, which in turn begins to increase its electrical resistance. As the resistance of the NTC thermistor increases, the inrush current is decreased, until it reaches the desired current level. At this point, the resistor maintains the desired current level, and the NTC thermistor returns to its normal state and cools down. In this way, the B57464S0109M000 Inrush Current Limiter functions to keep the inrush current to a safe level for the powered devices, ensuring that the components of the circuit do not overheat and that other circuit components are protected from thermal stress.

Conclusion

The B57464S0109M000 Inrush Current Limiter is an important part of many different types of circuits, from inverters and UPS systems to car audio systems and car navigation systems. It is designed to protect the other components in the circuit from potentially damaging inrush currents by reducing and limiting the current as it flows through the device. By understanding the application field and working principle of the B57464S0109M000 Inrush Current Limiter, we can ensure that our circuits are provided with the protection they need.

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