B57235S0509M051

Overview

The B57235S0509M051 is a radial leaded NTC thermistor from the S236 series, designed for inrush current limiting. It features a nominal resistance of 5 Ω at 25°C with a tolerance of ±20%. The component has a cylindrical body diameter of 9.5 mm and a height of 6 mm, with a thermal time constant of 60s. It supports a maximum rated power of 1800 mW and operates within a temperature range of -55°C to +170°C.

Feature Summary

• Provides high electrical stability for reliable circuit protection
• Reduces power consumption as resistance decreases significantly during operation
• Optimized for inrush current limiting in power supply applications

Applications

• Inrush current limiting in power supplies
• Motor soft-start circuits
• General electronic circuit protection

Procurement Notes

Verify the specific suffix M051 against the manufacturer datasheet to confirm packaging configuration, such as reel or cut tape options. Ensure the 5 Ω resistance value matches the design requirements for the intended inrush current limiting application. Confirm that the 9.5 mm diameter fits the PCB footprint constraints.

Selection Notes

Select this component when a 5 Ω initial resistance is required for inrush current control. Consider the 1800 mW power rating and 60s thermal time constant for thermal management. Verify compatibility with operating temperatures up to 170°C and ensure the radial lead spacing suits the target PCB layout.

Part Context

This part belongs to the TDK EPCOS S236 series of NTC thermistors specifically engineered for inrush current limiting. These components utilize negative temperature coefficient characteristics to protect sensitive electronics from high startup currents. The series offers various resistance values and physical dimensions to suit different power levels.

Replacement Considerations

B57235S0509M000

FAQ

What is the primary function of the B57235S0509M051?

It serves as an inrush current limiter to protect circuits from high startup currents.

What is the resistance tolerance of this thermistor?

The resistance tolerance is specified as ±20%.