B57211P0470M351 Allicdata Electronics
Allicdata Part #:

B57211P0470M351-ND

Manufacturer Part#:

B57211P0470M351

Price: $ 0.28
Product Category:

Circuit Protection

Manufacturer: EPCOS (TDK)
Short Description: ICL 47 OHM 0.2 2A 13MM
More Detail: Inrush Current Limiter 47 Ohms ±20% 2A 0.512" (13m...
DataSheet: B57211P0470M351 datasheetB57211P0470M351 Datasheet/PDF
Quantity: 1000
Lead Free Status / RoHS Status: Lead free / RoHS Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
1500 +: $ 0.25225
Stock 1000Can Ship Immediately
$ 0.28
Specifications
Series: --
Packaging: Tape & Reel (TR) 
Lead Free Status / RoHS Status: --
Part Status: Active
Moisture Sensitivity Level (MSL): --
R @ 25°C: 47 Ohms
Tolerance: ±20%
Current - Steady State Max: 2A
R @ Current: 615 mOhms
Diameter: 0.512" (13mm)
Lead Spacing: 0.295" (7.50mm)
Approvals: CQC, UL, VDE
Description

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Inrush Current Limiters (ICLs) are devices that limit the amount of current that flows into a particular circuit or system. Specifically, B57211P0470M351 is an ICL that functions as a resistive limiter with a non-linear response to input current. The device can also be used as an energy-absorbing and thermal overload protection circuit. This article will discuss its application fields and working principle.

Application fields

B57211P0470M351 is commonly used in systems where power surge occurs, such as variable frequency drives and wind energy generation systems. It is used to protect components from power surges by limiting the amount of current that can enter the system. The device can also be used to on/off switch protection in DC/DC converters, welding machines, motors, and many other power circuits.

Working Principle

At the beginning of the power-on process, the inrush current limiter of B57211P0470M351 starts and the control circuit is enabled. When current flows through the circuit, the voltage across the load causes a voltage drop across the nonlinear resistive element. This voltage drop causes the current to decrease to a predetermined level. After the circuit is initialized, the nonlinear resistive element prevents further increases in current.The operating principle of B57211P0470M351\'s Inrush Current Limiter can be summarized as follows. When power is first applied to the system, the device limits the current flow. This limitation is possible due to the voltage drop across the resistive element which reduces the current flow. After the system has been initialized, the nonlinear resistive element acts to further reduce the steady-state current levels so that they remain at a safe level.

Conclusion

Inrush Current Limiters (ICLs) are essential components in any electronic system which helps to reduce the amount of current that initially flows into the system. B57211P0470M351 is one such ICL and is used in variable frequency drives, wind energy generation systems, DC/DC converters, motors and welding machines. Its working principle depends on the nonlinear resistive element which limits the inrush current and keeps the system safe from power surges.

The specific data is subject to PDF, and the above content is for reference

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