B57234S0709M051

Overview

The B57234S0709M051 is an NTC thermistor for inrush current limiting manufactured by EPCOS (TDK). It features a nominal resistance of 7 Ohms with a tolerance of ±20%. The component has a current rating of 6 A and operates within a voltage range of 110 VAC to 230 VAC. Physical dimensions include a diameter of 15 mm and a width of 7 mm, with a lead spacing of 7.5 mm. It supports a power rating of 3.1 W and functions between -55°C and +170°C.

Feature Summary

• Provides effective inrush current limitation through negative temperature coefficient characteristics
• Designed for robust performance in high-temperature and high-humidity environments
• Utilizes radial leaded disk construction for reliable through-hole PCB mounting

Applications

• Inrush current limiting in AC/DC power supplies
• Protection circuits for industrial electronic equipment
• Surge protection in automotive electronics systems

Procurement Notes

Verify the specific ordering suffix against official TDK documentation to confirm exact electrical tolerances and packaging specifications. Ensure the selected variant matches the required thermal and electrical ratings for the target application circuit. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm availability and authenticity before procurement.

Selection Notes

Select this component based on its 7 Ohm resistance and 6 A current rating to match the system's peak inrush requirements. Consider the 15 mm diameter and 7.5 mm lead spacing for appropriate PCB footprint design. Evaluate the operating temperature range and power dissipation capabilities to ensure long-term reliability under expected load conditions.

Part Context

This component belongs to the B57234 series of NTC thermistors designed specifically for inrush current limiting applications. Manufactured by EPCOS, now part of the TDK Group, these devices are engineered to protect sensitive electronic components from high initial current surges during power-up phases in various commercial and industrial settings.

Replacement Considerations

Consult official TDK cross-reference guides for verified substitute part numbers. Ensure any replacement maintains identical resistance values, current ratings, and physical dimensions to guarantee compatibility with existing circuit designs and mechanical constraints.