B57234S0400M051

Overview

The B57234S0400M051 is a leaded NTC inrush current limiter (ICL) from the S234 series by TDK. It features a resistance of 40 Ohms at 25°C with a tolerance of ±20%. The component supports a maximum steady-state current of 3.4 A and has a diameter of 15.00 mm (0.591 inches). It utilizes tinned copper wire leads with a spacing of 7.50 mm (0.295 inches). Packaged in tape and reel, it complies with RoHS 3 standards and holds an MSL rating of 1.

Feature Summary

• Leaded NTC thermistor construction with flame-retardant coating rated UL94V-0
• Tinned copper wire leads designed for kinking during assembly
• Inrush current limiting functionality for circuit protection

Applications

• Power supply input stages
• Electronic equipment requiring surge suppression
• Circuit protection against high initial charging currents

Procurement Notes

Verify the specific ordering suffix to ensure correct packaging configuration. Confirm that the required resistance value and current ratings align with the design specifications. Check for any recent brand updates or documentation changes related to the transition from EPCOS to TDK Electronics nomenclature.

Selection Notes

Select this component based on the required 40 Ohm resistance and 3.4 A steady-state current capacity. Ensure the physical dimensions fit the PCB layout constraints. Consider the thermal characteristics and energy absorption capabilities relative to the application's peak load requirements.

Part Context

This part belongs to the B57234S series of NTC inrush current limiters manufactured by TDK Electronics. The series provides reliable protection against high inrush currents in electronic circuits. The component represents the standard product line following the integration of EPCOS into the TDK group.

Replacement Considerations

Cross-reference with other B57234S series variants for different resistance values. Verify compatibility with equivalent ICLs from other manufacturers if sourcing constraints exist.