SL320R530B

Overview

The Vishay Ametherm SL320R530B is a radial leaded NTC inrush current limiter designed for high-power applications. It features a nominal resistance of 0.5 ohms with a tolerance of ±20%. The component supports a steady-state current rating of 30 A and can withstand an energy absorption capacity of up to 160 Joules. Electrical specifications include a maximum operating voltage of 265 VAC. The physical package has a maximum diameter of 31.00 mm (1.220 inches) and a thickness of approximately 5 mm.

Feature Summary

• High surge current handling capability for robust circuit protection
• Radial leaded construction for through-hole PCB mounting
• Low steady-state resistance to minimize power loss during operation

Applications

• Power supply input stages
• Motor drive circuits
• Industrial control systems

Procurement Notes

Verify the specific suffix 'B' against the manufacturer datasheet to confirm dimensional tolerances or marking variations. Ensure the application environment does not exceed the 160 J energy limit or 265 VAC voltage rating. Confirm that the 30 A steady-state current requirement aligns with the thermal dissipation capabilities of the target PCB layout.

Selection Notes

Select this component when high inrush suppression is required for loads drawing up to 30 A. The low 0.5-ohm resistance makes it suitable for minimizing voltage drop in high-current paths. Consider the 31 mm diameter for adequate spacing on the PCB to ensure proper heat dissipation and mechanical stability during soldering.

Part Context

This part belongs to the Vishay Ametherm SL32 series of NTC thermistors, which are engineered for demanding industrial and commercial power applications. The series offers various resistance and current ratings to match different load profiles. The SL320R530B specifically targets high-current scenarios requiring significant surge suppression.

Replacement Considerations

The SL320R530B may be substituted by other Vishay Ametherm parts within the SL32 family if electrical parameters such as resistance, current rating, and energy absorption are compatible. Verify that any alternative maintains the same radial lead configuration and physical dimensions for board compatibility.