B57234S0330M051

Overview

The B57234S0330M051 is a leaded inrush current limiter (ICL) from the S234 series by TDK. It features a nominal resistance of 33 Ohms with a tolerance of ±20% at 25°C. The component supports a maximum steady-state current of 3.3 A and has a disc diameter of 15.00 mm (0.591 inches). It utilizes a wire spacing of 7.50 mm (0.295 inches) for through-hole mounting. The device holds UL certification and complies with RoHS3 standards.

Feature Summary

• Provides effective inrush current limiting to protect electronic circuits during power-up phases.
• Constructed as a negative temperature coefficient thermistor for reliable thermal performance.
• Features a robust leaded disk design suitable for standard through-hole assembly processes.

Applications

• Power supply input stages
• Consumer electronics protection
• Industrial equipment circuit safeguarding

Procurement Notes

Verify the specific ordering suffix against official TDK documentation to ensure correct packaging and marking specifications. Confirm that the required steady-state current rating aligns with the application's operational limits. Check for updated product change notices regarding marking or assembly sources before finalizing procurement orders.

Selection Notes

Select this component based on the required 33 Ohm resistance value and 3.3 A steady-state current capacity. Ensure the physical dimensions, specifically the 15 mm diameter and 7.5 mm lead spacing, fit the target PCB layout. Validate that the operating temperature range meets the environmental requirements of the end-use application.

Part Context

This part belongs to the B57234S series of NTC thermistors designed specifically for inrush current limiting. These components are manufactured by TDK Electronics, formerly EPCOS, and are categorized under circuit protection devices. The series offers various resistance values and current ratings to suit different power supply designs.

Replacement Considerations

Consult official TDK cross-reference lists for verified substitutes. Generic equivalents may not match the precise thermal characteristics or mechanical dimensions required for safe operation.

FAQ

What is the resistance value at 25°C?

The nominal resistance at 25°C is 33 Ohms with a tolerance of ±20%.

Is this component certified for safety compliance?

Yes, the component holds UL certification for safety standards.