B57211P0200M301

Overview

The B57211P0200M301 is a leaded inrush current limiter (ICL) manufactured by EPCOS, now part of TDK Electronics. This component features a nominal resistance of 20 Ohms at 25°C with a tolerance of ±20%. It supports a maximum steady-state current of 3A and exhibits a resistance of 380 mOhms under operating current conditions. The device has a cylindrical body diameter of 13mm (0.512 inches) and a lead spacing of 7.50mm (0.295 inches). It is designed for robust performance in consumer and industrial applications requiring effective surge protection.

Feature Summary

• Provides effective voltage and noise suppression through inrush current limiting capabilities
• Ensures temperature measurement and compensation stability in control engineering systems
• Offers reliable protection against electrical surges in sensitive electronic circuits

Applications

• Voltage and noise suppression in measurement and control engineering
• Temperature measurement and compensation systems
• Inrush current limiting for power supply inputs

Procurement Notes

Verify the specific manufacturer documentation to confirm compliance with safety standards such as CQC, UL, and VDE certifications. Ensure that the thermal characteristics and steady-state current ratings align with the target circuit design requirements before finalizing procurement decisions.

Selection Notes

Select this component when a 20 Ohm nominal resistance and 3A steady-state current capacity are required. Consider the 13mm diameter and 7.50mm lead spacing for PCB layout compatibility. Evaluate the application's thermal environment to ensure the ICL operates within its specified limits for optimal longevity and performance.

Part Context

This component belongs to the B57211 series of inrush current limiters from EPCOS/TDK. These devices are widely used in consumer electronics and industrial equipment to protect downstream components from high initial charging currents. The series offers various resistance values to suit different power supply designs.

Replacement Considerations

Public confirmed substitute part numbers: B57211P0470M301.