SL2250004

Overview

The SL2250004 is a radial leaded inrush current limiter from the Vishay Ametherm SL22 series. It features a nominal resistance of 50 Ohms with a tolerance of ±20%. The component supports a maximum steady-state current of 4 Amps and has a physical diameter of 22 mm (0.866 inches). It is designed for PCB mounting and operates within standard voltage ratings.

Feature Summary

• Provides effective limitation of high inrush currents during power-up sequences to protect downstream components.
• Utilizes a kink characteristic design to manage thermal energy dissipation during transient events.
• Offers robust mechanical construction suitable for through-hole PCB integration.

Applications

• Power supply input stages
• Industrial automation control systems
• Embedded system power management

Procurement Notes

Verify the specific ordering suffix against official Vishay documentation, as variations may exist. Confirm that the required steady-state current and resistance values align with the circuit design specifications before procurement. Ensure compliance with RoHS directives if applicable to the target market.

Selection Notes

Select this component when a 50 Ohm initial resistance and 4 Amp steady-state capacity are required. Consider the 22 mm package size for adequate heat dissipation. Evaluate the maximum recommended energy rating against the expected surge energy in the application to ensure reliability.

Part Context

This part belongs to the SL22 series of inrush current limiters manufactured by Vishay Ametherm. The series provides various resistance and current combinations for different power requirements. These components are widely used in AC/DC conversion circuits to mitigate startup stress.

Replacement Considerations

SL2250004B is a documented variant within the same product family. Verify electrical parameters and physical dimensions before substitution to ensure compatibility with existing PCB layouts and thermal constraints.