B57153S150M54

Overview

The B57153S150M54 is an NTC inrush current limiter (ICL) from the S153 series, manufactured by TDK. It features a resistance of 15 Ohms at 25°C with a tolerance of ±20%. The component supports a maximum steady-state current of 1.8 A and has a diameter of 8.50 mm (0.335 inches). Lead spacing is 5.00 mm (0.197 inches). It holds UL certification and complies with RoHS3 standards.

Feature Summary

• Provides effective inrush current limiting for electronic circuits
• Utilizes negative temperature coefficient characteristics for self-regulating protection
• Offers compact axial package design suitable for PCB mounting

Applications

• Power supply input stages
• Transformer primary side protection
• General circuit protection against surge currents

Procurement Notes

Verify the specific ordering suffix to confirm packaging type, such as cut tape or tape and reel, as these affect handling procedures. Ensure the selected variant matches the required steady-state current and resistance values for the target application. Confirm UL certification requirements if applicable to the end product safety standards.

Selection Notes

Select this component based on the required cold resistance value and maximum steady-state current rating. Consider the physical dimensions, specifically the 8.50 mm diameter and 5.00 mm lead spacing, for PCB layout compatibility. Evaluate thermal management needs relative to the energy absorption capabilities of the S153 series.

Part Context

This part belongs to the EPCOS (now TDK Electronics) B57153S0 series of NTC thermistors designed for inrush current limiting. These components are engineered to protect sensitive electronic circuits from high initial charging currents during power-up phases.

Replacement Considerations

Compatible substitutes within the same series include B57153S0479M054 and B57153S150M54 variants with different resistance values. Verify that alternative parts match the 15 Ohm resistance, 1.8 A current rating, and 8.50 mm diameter specifications.