B57235S0809M000

Overview

The B57235S0809M000 is an NTC thermistor designed for inrush current limiting, manufactured by EPCOS (TDK). It features a resistance of 8 Ohms at 25°C with a tolerance of ±20%. The component has a steady-state current rating of 3.5 A and operates within a temperature range of -55°C to +170°C. Physical dimensions include a diameter of 9.5 mm and a height of 6 mm. It utilizes radial leads with a spacing of 5 mm and a lead diameter of 0.6 mm. The device is rated for voltages of 110 VAC and 230 VAC, with a maximum power rating of 1.8 W.

Feature Summary

• Designed specifically for inrush current limiting applications in electronic circuits.
• Utilizes negative temperature coefficient characteristics to manage initial surge currents.
• Constructed as a coated disk type with radial leads for PCB mounting.

Applications

• Inrush current limiting in AC/DC power supplies
• Protection for capacitive loads during startup
• Surge current suppression in consumer electronics

Procurement Notes

Verify the specific part number suffix against official TDK documentation to ensure correct resistance and tolerance specifications. Confirm that the radial lead spacing matches the target PCB footprint design. Check for RoHS compliance status if required by project regulations. Ensure soldering methods adhere to the manufacturer's mounting instructions to prevent thermal damage.

Selection Notes

Select this component based on the required 8 Ohm resistance value and 3.5 A steady-state current capacity. Evaluate the operating temperature range requirements against the specified -55°C to +170°C limits. Consider the physical dimensions of 9.5 mm diameter and 6 mm height for spatial constraints. Verify compatibility with standard PCB mounting techniques for radial leaded components.

Part Context

This component belongs to the B57235S series of NTC thermistors intended for inrush current limiting. It is part of TDK's circuit protection portfolio, offering reliable performance for managing electrical surges. The series is characterized by its coated disk construction and radial lead configuration, suitable for various industrial and consumer applications requiring robust surge protection.

Replacement Considerations

Consult official TDK substitution guides for compatible alternatives. Verify that any substitute maintains identical resistance, current rating, and dimensional specifications. Cross-reference datasheets to ensure equivalent thermal and electrical performance characteristics are met.

FAQ

What is the steady-state current rating of the B57235S0809M000?

The steady-state current rating is 3.5 A.

What is the resistance value at 25°C?

The resistance at 25°C is 8 Ohms with a tolerance of ±20%.