B57234S0229M000

Overview

The B57234S0229M000 is an NTC thermistor classified as an inrush current limiter (ICL) manufactured by EPCOS, now part of TDK Electronics. This component features a nominal resistance of 2.2 Ohms with a tolerance of ±20%. It is designed to handle a maximum steady-state current of 9 A. The physical dimensions include a diameter of 0.591 inches (15.00 mm). The device utilizes a 2800K Beta value characteristic for its temperature-resistance relationship.

Feature Summary

• Provides effective limitation of inrush currents during power-up phases
• Utilizes negative temperature coefficient properties for self-regulating resistance
• Offers robust protection for sensitive electronic circuits against high initial current spikes

Applications

• Power supply input stages
• Consumer electronics devices
• Industrial control systems

Procurement Notes

Verify the specific datasheet version from TDK Electronics to confirm mechanical tolerances and thermal characteristics. Ensure the application environment does not exceed the rated steady-state current of 9 A. Cross-reference the 2.2 Ohm nominal resistance with circuit design requirements to guarantee proper inrush limiting performance.

Selection Notes

Select this component when a 2.2 Ohm initial resistance is required to limit peak charging currents. The 9 A rating suits applications with moderate power levels. Consider the 15.00 mm diameter for board space constraints. Verify compatibility with the system's operating temperature range and the specific 2800K beta constant for accurate thermal modeling.

Part Context

This part belongs to the EPCOS/TDK inrush current limiter series, specifically utilizing NTC thermistor technology. These components are distinct from standard temperature measurement sensors, focusing instead on transient current suppression. The product line supports various industries including automotive and industrial electronics where reliable power-up sequencing is critical.

Replacement Considerations

Direct substitutes must match the 2.2 Ohm resistance, 9 A current rating, and 15.00 mm diameter. Verify that alternative NTC ICLs share similar 2800K beta values to maintain equivalent thermal response curves. Check for pin-compatible mounting styles if PCB footprint changes are not permitted.