AS321R036775

Overview

The AS321R036775 is a radial leaded inrush current limiter from the Vishay Ametherm AS32 series. It features a nominal resistance of 1 Ohm with a tolerance of ±25%. The component supports a maximum steady-state current of 36 A at 25°C and handles a recommended energy rating of 300 Joules, with an actual energy failure point of 600 Joules. It has a cylindrical body diameter of 30 mm and utilizes a bulk packaging format.

Feature Summary

• Utilizes negative temperature coefficient thermistor technology to limit initial surge currents
• Provides automatic reset functionality after power cycle or cooling
• Designed for robust protection against high-energy electrical transients

Applications

• Power supply input stages
• Motor drive circuits
• Transformer primary windings

Procurement Notes

Verify the specific custom designation suffix against official Vishay documentation to confirm exact manufacturing tolerances and physical dimensions. Ensure the selected variant matches the required thermal and electrical specifications for the target application environment.

Selection Notes

Select this component based on its 1 Ohm resistance value and 36 Ampere current handling capability. Confirm that the 300 Joule energy rating aligns with the system's peak inrush requirements. Consider the 30 mm diameter for adequate PCB spacing and thermal dissipation.

Part Context

This part belongs to the AS32 series of inrush current limiters manufactured by Vishay Ametherm. These components are designed to protect electronic equipment from damaging surge currents during power-up phases.

Replacement Considerations

Cross-reference with standard AS32-1R036 models if custom specifications are not strictly required. Verify compatibility with existing PCB footprints and thermal management constraints.