B57235S0509M000

Overview

The B57235S0509M000 is an NTC thermistor designed for inrush current limiting, manufactured by TDK under the EPCOS brand. It features a nominal resistance of 5 Ohms at 25°C with a tolerance of ±20%. The component has a maximum steady-state current rating of 4.2 A and operates within a temperature range of -55°C to +170°C. It utilizes a radial PCB mount configuration with a body diameter of 9.5 mm and a height of 6 mm. The device is certified under standards including MIL-STD-202, IEC 60068-2-2, and IATF 16949.

Feature Summary

• Designed specifically for inrush current limiting applications in electronic circuits
• Utilizes negative temperature coefficient (NTC) characteristics for thermal protection
• Supports radial through-hole mounting on printed circuit boards

Applications

• Inrush current limiting in power supply inputs
• Protection against surge currents in AC/DC converters
• Surge suppression in consumer electronics power stages

Procurement Notes

Verify the manufacturer part number B57235S0509M000 against official TDK/EPCOS documentation to confirm authenticity. Ensure that the specific tolerance class and thermal time constants match the design requirements. Cross-reference certification marks such as UL or VDE if required for end-product compliance. Confirm package type and lead spacing dimensions prior to integration into PCB layouts.

Selection Notes

Select this component when a 5 Ohm resistance value at 25°C is required for surge suppression. Consider the 4.2 A steady-state current limit and 9.5 mm body size constraints. Verify compatibility with operating temperatures ranging from -55°C to +170°C. Ensure the radial leaded package fits the available PCB footprint and assembly process capabilities.

Part Context

This component belongs to the B57235 series of NTC thermistors intended for inrush current limiting. It is part of TDK's portfolio of passive components providing circuit protection. The S235 designation indicates specific physical dimensions and performance characteristics within the broader product family.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.