SG150

Inrush Current Limiters (ICL) Overview

The SG150 is a radial leaded inrush current limiter from the SURGE-GARD series, manufactured by Vishay Ametherm. It features a nominal resistance of 2.5 Ohms at +25°C with a tolerance of ±15%. The component supports a steady-state current rating of 10 A and withstands voltage ratings of 120 VAC. It has a cylindrical body diameter of 0.900 inches (22.86 mm) and utilizes outside kinked leads for PCB mounting.

Inrush Current Limiters (ICL) Feature Summary

• Provides high initial resistance to limit inrush current during power-up
• Self-regulating NTC thermistor behavior reduces resistance as temperature rises
• UL approved for safety compliance in electronic circuits

Inrush Current Limiters (ICL) Applications

• Power supply input stages
• Transformer primary circuits
• Capacitive load protection

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific datasheet revision and UL certification status directly with the manufacturer or authorized distributors before finalizing design integration. Confirm that the 10 A steady-state current rating aligns with the thermal management requirements of the target application environment.

Inrush Current Limiters (ICL) Selection Notes

Select this component when a 2.5 Ohm initial impedance is required to suppress startup surges. Ensure the 10 A current capacity exceeds the circuit's maximum operating current. Consider the 0.900-inch diameter for adequate spacing on the printed circuit board layout.

Inrush Current Limiters (ICL) Part Context

This part belongs to the SURGE-GARD family of negative temperature coefficient thermistors designed specifically for protecting sensitive electronics against damaging surge currents. The SG150 represents a mid-range option within the series, balancing resistance value and current handling capability for standard industrial applications.

Inrush Current Limiters (ICL) Replacement Considerations

Cross-reference with other Vishay Ametherm models offering similar 2.5 Ohm resistance and 10 A ratings. Verify mechanical footprint compatibility and electrical specifications match before substituting.