B57127P209M301

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Inrush Current Limiters (ICL)

B57127P209M301 is one of the members of Inrush Current Limiters (ICL) family of product. It was purposely designed to limit inrush current and prevent damage to related components when power is first applied to the system.

Application Field

ICL series of product is used widely for appliances, computer, servers, UPS, solar system, battery charger, AC/DC power supplies, motor control and switchgear. With the rise of IoT, the application on ICL expands. The B57127P209M301 is perfectly suited to handle inrush current and kickstart safe system power-up.

Working Principle

Inrush current limiter operates based on the principle of negative temperature coefficient circuit. B57127P209M301 contains a thermistor material, which changes its resistance value according to the surrounding temperature. In the presence of increased temperature, the resistance value of the thermistor decreases. Unlike the other traditional solutions, ICL put the thermistor block on the circuit board. When the circuit board is powered up, both electric current and temperature are produced.

The thermistor device of the ICL senses the rise in temperature and instantly reduces the resistance, limiting the current. When the temperature is settled, the thermistor returns to its original high resistance state. This entire process happens in a few milliseconds. With its low voltage drop and high inrush current capability B57127P209M301 can safely shut-off the overload amounts of current with minimum emission of heat or acoustic noise.

Conclusion

ICL is widely used to solve the inrush current issue, and B57127P209M301 is one of the product that meets many challenging requirements. The B57127P209M301 has the advantages of small size, fast reaction, low energy loss, low acoustic noise and low cost. It is applicable to many wide range of applications, such as industrial control,communication, automation equipment, instrument and UPS, and offers a effective protection for the system.

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