SL321R036B

Overview

The Vishay Ametherm SL321R036B is a Negative Temperature Coefficient (NTC) thermistor designed as an inrush current limiter. It features a nominal resistance of 1 Ohm at 25°C with a tolerance of ±25%. The component has a maximum steady-state current rating of 36 A and can withstand up to 160 Joules of inrush energy. It utilizes a radial leaded package with a diameter of approximately 31 mm, suitable for PCB mounting.

Feature Summary

• Utilizes NTC thermistor technology to provide high initial resistance that decreases as temperature rises.
• Capable of absorbing significant inrush energy pulses without failure.
• Designed for direct PCB mounting via radial leads.

Applications

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

Procurement Notes

Verify the specific suffix 'B' against the manufacturer's official datasheet to confirm if it denotes a distinct mechanical or electrical variation compared to standard variants. Ensure the selected component matches the required 36 A current rating and 160 Joule energy absorption capacity for the target application circuit.

Selection Notes

Select this component based on the 1 Ohm resistance value and 36 A continuous current capability. Confirm that the thermal characteristics align with the system's operating environment and that the physical dimensions fit the available PCB space.

Part Context

This part belongs to the Vishay Ametherm series of inrush current limiters. These components are specifically engineered to protect sensitive electronic components from damage caused by high surge currents during power-up events.

Replacement Considerations

The AS321R036 is a comparable variant within the same product family. Verify compatibility regarding current ratings and physical dimensions before substitution.