AS320R530100

Overview

The Vishay Ametherm AS320R530100 is a Negative Temperature Coefficient (NTC) thermistor designed as an inrush current limiter. It features a nominal resistance of 500 mOhms with a tolerance of ±25%. The component has a steady-state current rating of 30 A and supports voltage ratings of 120 VAC, 240 VAC, 480 VAC, and 680 VAC. Physically, it measures 30 mm in diameter and 7.8 mm in width, with radial leads spaced at 17.1 mm. It belongs to the AS32 series and is UL approved for safety compliance.

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 capabilities up to 900W.
• Features UL approval for enhanced safety certification in power applications.

Applications

• Power supply units requiring surge suppression
• Electronic equipment input stages
• Industrial control systems

Procurement Notes

Verify that the specific part number matches the required electrical parameters, particularly the 500 mOhm resistance and 30 A current rating. Confirm that the radial PCB mount style and 17.1 mm lead spacing are compatible with the target printed circuit board layout. Ensure the application environment does not exceed the specified voltage ratings of 120 VAC through 680 VAC. Check for any specific packaging requirements if bulk quantities are needed, as factory pack sizes may vary.

Selection Notes

Select this component when designing circuits that require robust inrush current limiting for high-energy inputs up to 1000 joules. It is suitable for applications demanding UL certification and steady-state currents around 30 A. Consider the physical dimensions of 30 mm diameter and the radial lead configuration during the mechanical design phase. Evaluate the thermal management needs, as the device dissipates significant heat during operation, requiring adequate clearance on the PCB.

Part Context

This component is part of the Vishay Ametherm AS32 series of NTC thermistors. The series is engineered specifically for inrush current limiting in various electronic power applications. These devices are characterized by their ability to handle high energy surges while maintaining low steady-state resistance to minimize power loss during normal operation.

FAQ

What is the maximum input energy this component can protect against?

The AS320R530100 provides inrush current protection for input energies ranging from 250 to 1000 joules.

Is this component certified for safety compliance?

Yes, the AS320R530100 is UL approved, ensuring it meets specific safety standards for inrush current limiters.