B57153S0809M051

Overview

The B57153S0809M051 is an NTC thermistor inrush current limiter from the B57153S series. It features a nominal resistance of 8 Ohms with ±20% tolerance and a steady-state current rating of 2.2 A. The component supports voltage ratings of 110 VAC and 230 VAC, with a power rating of 1.4 W. Physical dimensions include an 8.5 mm diameter and 6 mm width, utilizing radial leads with 0.6 mm diameter and 5 mm spacing. Operating temperature ranges from -55°C to +170°C.

Feature Summary

• Provides high electrical stability for effective inrush current limiting
• Features low residual resistance after thermal stabilization
• Designed for PCB mounting with radial termination

Applications

• Switching power supplies
• Consumer electronics
• Industrial control systems

Procurement Notes

Verify the manufacturer part number against official TDK/EPCOS documentation to ensure authenticity. Confirm that the specific suffix matches the required resistance and current ratings for your circuit design. Check RoHS compliance status via the official datasheet before finalizing procurement orders.

Selection Notes

Select this component based on its 8 Ohm nominal resistance and 2.2 A steady-state current capability. Ensure the operating environment stays within the specified -55°C to +170°C range. Verify that the 110/230 VAC voltage rating aligns with the application's electrical requirements.

Part Context

This part belongs to the B57153S series of leaded NTC thermistors designed specifically for inrush current limiting. These components are manufactured by EPCOS, now part of TDK Electronics, and are widely used to protect electronic circuits from high initial charging currents during power-up phases.

Replacement Considerations

Consult official TDK substitution lists for verified equivalents. Generic replacements may not match the precise B-parameter or thermal characteristics required for reliable inrush protection.