B57153S0330M051

Overview

The B57153S0330M051 is a radial leaded NTC thermistor designed as an inrush current limiter. It features an initial resistance of 33 Ohms with a tolerance of ±20%. The component supports a maximum steady-state current of 1.3 A and operates at voltage ratings of 115 VAC or 230 VAC. Physical dimensions include an 8.5 mm diameter and 6 mm width, with a 5 mm lead spacing. It has a power rating of 1.4 W and a B-parameter of 3000 K. The device functions within a temperature range of -55°C to +170°C.

Feature Summary

• Provides effective suppression of high inrush currents during power-up sequences
• Features stable long-term performance under severe ambient conditions
• Utilizes a robust ceramic construction for reliable thermal cycling

Applications

• Capacitive power supply circuits
• Energy meters
• Series connection with mains inputs

Procurement Notes

Verify the specific suffix 'V9' against official TDK documentation to confirm the correct manufacturing revision, as part number updates may occur. Ensure the selected variant matches the required axial or radial configuration and packaging type specified in the latest datasheet before finalizing procurement orders.

Selection Notes

Select this component when circuit design requires limiting peak charging currents into large capacitive loads. The 33 Ohm initial resistance and 1.3 A current rating must align with the system's operational parameters. Consider the physical size constraints and the operating temperature range requirements for the intended application environment.

Part Context

This part belongs to the B57153S series of inrush current limiters manufactured by EPCOS (TDK). These components are specifically engineered for protecting electronic equipment from damage caused by excessive surge currents. The series offers various resistance values and current ratings to suit different power supply architectures.

Replacement Considerations

Public confirmed substitute part numbers: B57153S0330M054.