SL320R536B

Overview

The Vishay Ametherm SL320R536B is a radial leaded inrush current limiter from the SL32 series. It features a nominal resistance of 0.5 ohms with a ±20% tolerance and a continuous current rating of 36 A. The component has a disc diameter of approximately 31.00 mm (1.220 inches) and utilizes a bulk packaging format. It is designed for PCB mounting and operates within standard industrial temperature ranges.

Feature Summary

• Provides effective limitation of high inrush currents during power-up sequences
• Utilizes negative temperature coefficient characteristics to reduce resistance after initial surge
• Constructed with robust radial leads suitable for through-hole PCB integration

Applications

• Power supply input stages
• Transformer primary circuit protection
• Capacitive load switching applications

Procurement Notes

Verify the specific suffix designation against the manufacturer datasheet to confirm exact dimensional tolerances and thermal energy ratings. Ensure the selected variant matches the required continuous current and peak pulse specifications for the target application circuit design.

Selection Notes

Select this component based on the required steady-state resistance value and maximum continuous current handling capability. Consider the physical footprint constraints due to the larger disc diameter compared to smaller series variants. Evaluate the thermal dissipation requirements under repeated surge conditions.

Part Context

This part belongs to the Vishay Ametherm SL32 series of NTC thermistors specifically engineered as inrush current limiters. These components are distinct from precision measurement thermistors, focusing instead on high-energy absorption and current suppression capabilities for power electronics protection.

Replacement Considerations

SL320R536

FAQ

What is the typical resistance value at 25°C?

The nominal resistance at 25°C is 0.5 ohms.

Is this component RoHS compliant?

Yes, the component is listed as RoHS compliant.