B57235S0100M051

Overview

The B57235S0100M051 is an NTC thermistor for inrush current limiting, manufactured by EPCOS (TDK Electronics). It features a nominal resistance of 10 Ω at 25°C with a tolerance of ±20%. The component has a maximum rated power of 1.8 W and operates within a temperature range of -55°C to +170°C. It utilizes radial leads with a lead spacing of 5 mm and a lead diameter of 0.6 mm. The disk dimensions are 9.5 mm in diameter and 6 mm in width. The device is supplied in a reel packaging format.

Feature Summary

• Designed specifically for limiting inrush currents in electronic circuits
• Utilizes negative temperature coefficient characteristics for rapid resistance reduction upon heating
• Constructed as a coated disk type with radial leads for PCB mounting

Applications

• Inrush current limiting in power supply inputs
• Protection of capacitive loads during startup
• Surge current suppression in AC/DC converters

Procurement Notes

Verify the specific ordering suffix M051 confirms reel packaging rather than bulk散装. Ensure the 10 Ω resistance value matches the circuit design requirements for the intended inrush limiting application. Confirm that the 1.8 W power rating and thermal time constant are sufficient for the expected surge energy profiles in the target equipment.

Selection Notes

Select this component based on the required 10 Ω nominal resistance and the specific reel packaging format indicated by the M051 suffix. Consider the operating temperature range up to 170°C and the physical dimensions of 9.5 mm diameter when designing the PCB layout. Verify compatibility with the soldering methods specified in the official mounting instructions.

Part Context

This part belongs to the B57235 series of NTC thermistors for inrush current limiting produced by TDK Electronics. The series includes various resistance values tailored for different current ratings. The B57235S0100M051 variant specifically denotes the 10 Ω resistance version packaged in reels for automated assembly processes.

Replacement Considerations

Direct substitutes within the same series include other B57235 variants with different resistance values but similar form factors. Cross-referencing datasheets for equivalent inrush limiters from other manufacturers requires matching the 10 Ω resistance, 1.8 W power rating, and radial lead spacing of 5 mm.

FAQ

What is the lead spacing for the B57235S0100M051?

The lead spacing is 5 mm.

Does the M051 suffix indicate a change in electrical function?

No, the suffix typically indicates the packaging format (reel) rather than a change in the electrical characteristics or function of the thermistor.