AS353R030

Overview

The AS353R030 is a radial leaded inrush current limiter from the Vishay Ametherm AS35 series, designed for PCB mounting. It features a nominal resistance of 3 Ohms with a tolerance of ±25% and a steady-state current rating of 30 A. The component supports voltage ratings of 120 VAC, 240 VAC, 480 VAC, and 680 VAC. Physical dimensions include a diameter of 36 mm, width of 8.5 mm, lead diameter of 0.8 mm, and lead spacing of 19 mm. It operates within a temperature range defined by a dissipation factor of 116.4 mW/°C.

Feature Summary

• Provides inrush current protection for input energies ranging from 250 to 1000 joules
• Supports steady-state currents between 10A and 50A with power dissipation up to 900W during operation

Applications

• Protection for small appliance motors
• Power supply input stages requiring surge suppression
• General electronic circuits needing inrush current limiting

Procurement Notes

Verify the specific datasheet revision (e.g., 03-Jun-2025) and document number (24179) when sourcing to ensure compliance with current manufacturing standards. Confirm that the radial lead configuration matches your PCB layout requirements. Check RoHS status details as indicated in official specifications before finalizing procurement orders.

Selection Notes

Select this component when an inrush current limiter with a 3 Ohm resistance and 30 A current handling capability is required. Ensure the application voltage does not exceed the rated values of 120 VAC to 680 VAC. Consider the physical size constraints, specifically the 36 mm diameter and 19 mm lead spacing, to fit the designated PCB area.

Part Context

This part belongs to the AS35 series of NTC thermistors manufactured by Vishay / Ametherm. These components are specialized PTC thermistors intended for overcurrent limiting applications. The series is engineered to handle significant energy inputs while maintaining stable performance in various AC voltage environments.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.