AS320R536

Overview

The Vishay Ametherm AS320R536 is a radial lead NTC thermistor inrush current limiter designed for PCB mounting. It features a nominal resistance of 500 mOhms at 25°C with a tolerance of ±25%. The component supports a maximum steady-state current of 36 A and withstands voltages up to 680 VAC. Physical dimensions include a diameter of 29.00 mm (1.142 inches) and a lead spacing of 17.10 mm (0.673 inches). It is RoHS3 compliant and CSA approved.

Feature Summary

• Suppresses high inrush current surges during power-up sequences
• Self-resetting negative temperature coefficient operation
• DIN block compatible design for secure power control box mounting

Applications

• Power supply input protection
• Motor drive circuits
• Transformer inrush limiting

Procurement Notes

Verify the specific ordering suffix against official documentation, as variants such as AS320R536100 may indicate different packaging or approval statuses. Confirm that the required voltage ratings and thermal characteristics align with the system's operational envelope before finalizing procurement orders.

Selection Notes

Select this component based on the 500 mOhms initial resistance and 36 A continuous current capability. Ensure the physical footprint accommodates the 29 mm diameter and 17.10 mm lead spacing. Validate that the energy absorption capacity meets the peak surge requirements of the target application circuit.

Part Context

This part belongs to the AS series of inrush current limiters from Vishay Ametherm. These components are engineered to protect sensitive electronic equipment from damaging current spikes. The AS series offers various resistance and current ratings to suit diverse industrial and commercial power applications.

Replacement Considerations

Cross-reference with other Vishay Ametherm AS series parts for similar electrical specifications. Verify mechanical compatibility and thermal performance when substituting with generic NTC thermistors.