AS3520010

Overview

The AS3520010 is an inrush current limiter from the Vishay Ametherm AS series, designed to protect electronic components from damaging transient currents. It features a nominal resistance of 20 Ohms with a tolerance of ±25% at 25°C. The device supports a maximum steady-state current of 10 A and has a physical diameter of 1.417 inches (36.00 mm). It utilizes radial leads with a spacing of 0.748 inches (19.00 mm) for PCB mounting.

Feature Summary

• Provides protection against damaging inrush current levels during power-up sequences
• Utilizes NTC thermistor technology to limit initial surge while allowing steady-state operation
• Designed for robust performance within specified energy input ranges

Applications

• Protection of sensitive electronic components from high initial surge currents
• Power supply input stages requiring inrush current management
• Transformer protection applications

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and specific datasheet revision prior to integration. Ensure thermal management requirements align with the device's dissipation characteristics. Validate lead dimensions and mounting style compatibility with the target PCB layout.

Selection Notes

Select this component based on the required nominal resistance value and maximum steady-state current rating. Consider the physical package dimensions and lead spacing for mechanical fit. Evaluate the energy absorption capability relative to the application's input energy levels. Ensure the operating temperature range meets the environmental conditions of the end-use system.

Part Context

This part belongs to the AS series of inrush current limiters manufactured by Vishay Ametherm. These devices are specifically engineered for circuit protection applications where controlling initial current spikes is critical. The series offers various resistance and current ratings to suit different power levels and system requirements.

Replacement Considerations

Consult official Vishay documentation for confirmed substitute part numbers within the same series or family. Verify that any alternative component matches the electrical parameters and physical dimensions. Cross-reference specifications to ensure equivalent performance in the intended application.