B57153S0330M054

Overview

The B57153S0330M054 is a radial lead NTC thermistor inrush current limiter from the TDK EPCOS S153 series. It features a nominal resistance of 33 Ohms with a tolerance of ±20%. The component has a body diameter of 8.5 mm and a maximum height of 13.0 mm. It supports steady-state currents up to 1.3 A and operates within a temperature range of -55°C to +170°C.

Feature Summary

• Utilizes negative temperature coefficient (NTC) technology for automatic resistance reduction during operation
• Designed for PCB mounting with radial leads to facilitate automated assembly processes
• Engineered to suppress high initial charging currents in power supply circuits

Applications

• Switching power supplies
• Power factor correction circuits
• Electronic ballasts
• Motor drives

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct tolerance and packaging specifications. Confirm that the selected variant matches the required steady-state current rating and physical dimensions for the target PCB footprint. Cross-reference the RoHS compliance status with current regulatory requirements before finalizing procurement orders.

Selection Notes

Select this component based on the required nominal resistance value of 33 Ohms and the maximum steady-state current capacity of 1.3 A. Ensure the operating environment stays within the specified -55°C to +170°C temperature range. Verify that the 8.5 mm body diameter fits the available board space and that the radial lead spacing accommodates the design layout constraints.

Part Context

This part belongs to the B57153S series of NTC inrush current limiters manufactured by TDK Electronics, formerly known as EPCOS. The series is designed for general-purpose circuit protection applications where rapid current limiting is required at startup. These components are widely used in consumer electronics and industrial power systems to protect downstream components from thermal stress.

Replacement Considerations

Equivalent parts include B57153S0330M051V9, which shares identical electrical characteristics but may differ in packaging or revision status. Other variants within the B57153S family with matching 33 Ohm resistance and similar current ratings can serve as functional substitutes if mechanical dimensions align.