B57153S0479M051

Overview

The B57153S0479M051 is a radial leaded NTC thermistor designed for inrush current limiting. It features a resistance of 4.7 Ohms at 25°C with a ±20% tolerance and a B-parameter of 3000 K. The component supports a steady-state current of 3 A and operates within a temperature range of -55°C to +170°C. Key electrical specifications include a power rating of 1.4 W, a dissipation factor of 8 mW/K, and voltage ratings of 115 VAC or 230 VAC. Physical dimensions include an 8.5 mm diameter and 6 mm width.

Feature Summary

• Provides high electrical stability for effective inrush current limitation
• Features low power consumption due to significant resistance reduction during operation
• Ensures precise temperature sensing through tight resistance and B-value tolerances

Applications

• Power supply input stages
• Consumer electronics protection
• Industrial equipment surge suppression

Procurement Notes

Verify the specific suffix M051 against official TDK documentation to confirm packaging configuration and revision status. Ensure the selected variant matches the required steady-state current and voltage ratings for the target circuit application. Cross-reference part numbers carefully as manufacturer revisions may alter suffix designations without changing core functionality.

Selection Notes

Select this component based on the 4.7 Ohm initial resistance and 3 A steady-state current capability. Evaluate the thermal environment to ensure operation remains within the -55°C to +170°C range. Confirm that the 1.4 W power rating and 8 mW/K dissipation factor align with the system's thermal management requirements and surge energy profiles.

Part Context

This component belongs to the B57153S series of NTC thermistors manufactured by TDK Electronics. The series is engineered for robust performance in demanding environments, offering long-term stability under high temperature and humidity conditions. These devices are widely utilized across automotive, industrial, and consumer sectors for reliable circuit protection.

Replacement Considerations

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