SL1217004

Inrush Current Limiters (ICL) Overview

The SL1217004 is a radial leaded inrush current limiter from the Vishay Ametherm SL12 series. It features a nominal resistance of 17.5 Ohms with a tolerance of ±25%. The component supports a maximum steady-state current of 4 A at temperatures up to 65°C. Its case diameter measures 11.5 mm, and it exhibits a dissipation factor of 12.7 mW/°C. The device is designed for PCB mounting and carries UL approval.

Inrush Current Limiters (ICL) Feature Summary

• Provides effective limitation of high inrush currents during power-up sequences
• Features automatic reset capability allowing repeated use without replacement
• Constructed with robust materials to withstand high thermal energy levels

Inrush Current Limiters (ICL) Applications

• Switching mode power supplies (SMPS)
• AC/DC converter circuits
• Electronic ballasts for lighting systems

Inrush Current Limiters (ICL) Procurement Notes

Verify that the specific order matches the SL1217004 designation rather than similar SL-series variants. Confirm the required resistance value of 17.5 Ohms aligns with circuit design specifications. Ensure the 4 A current rating meets the application's peak and steady-state requirements. Check for UL certification marks on packaging if regulatory compliance is mandatory for the end product.

Inrush Current Limiters (ICL) Selection Notes

Select this component when a radial leaded form factor is required for through-hole assembly. The 11.5 mm diameter size must fit within the available board space constraints. Consider the 17.5 Ohm resistance value for appropriate inrush limiting characteristics. Evaluate the 30 J recommended energy limit against potential surge conditions in the target application environment.

Inrush Current Limiters (ICL) Part Context

This part belongs to the Vishay Ametherm SL12 series of ceramic inrush current limiters. These components are widely used in consumer electronics and industrial equipment to protect sensitive downstream components. The series offers various resistance values and current ratings to suit different power supply designs.

Inrush Current Limiters (ICL) Replacement Considerations

Direct substitutes include other Vishay Ametherm parts within the SL12 family with matching electrical parameters. Cross-brand replacements require careful verification of physical dimensions and thermal characteristics.