SG200

Inrush Current Limiters (ICL) Overview

The SG200 is a negative temperature coefficient (NTC) thermistor inrush current limiter from the SURGE-GARD series by Vishay / Ametherm. Designed for PCB mounting with radial termination, it features a nominal resistance of 5 Ohms with a 15% tolerance and a steady-state current rating of 7 A. The component supports a maximum voltage of 265 VAC and operates within a temperature range of 0°C to +65°C. Physical dimensions include a diameter of 0.6 inches, width of 0.25 inches, lead spacing of 0.31 inches, and lead diameter of 0.032 inches. It carries UL approval.

Inrush Current Limiters (ICL) Feature Summary

• Utilizes NTC thermistor technology to limit initial surge currents during power-up
• Provides UL approved protection for electronic circuits
• Features straight leads for standard radial PCB mounting

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 file number against official Vishay documentation before integration. Confirm that the 5 Ohm resistance and 7 Ampere ratings align with the target circuit's peak inrush requirements. Ensure the operating temperature range of 0°C to +65°C meets environmental constraints. Cross-reference the physical footprint dimensions, particularly the 0.31-inch lead spacing, with the PCB layout design.

Inrush Current Limiters (ICL) Selection Notes

Select this component when a 5 Ohm cold resistance is required to manage inrush current up to 7 Amperes at 265 VAC. The radial package suits through-hole assembly processes. Consider the 15% resistance tolerance for circuit stability margins. Evaluate thermal dissipation capabilities given the bulk packaging and ambient operating limits. Compare against higher or lower resistance variants if current handling needs differ.

Inrush Current Limiters (ICL) Part Context

The SG200 belongs to the SURGE-GARD family of inrush current limiters manufactured by Vishay / Ametherm. This series specializes in NTC thermistors designed to protect sensitive electronics from high initial charging currents. The SG model line typically offers various resistance and current combinations to suit different power levels, all sharing similar mounting styles and safety certifications.

Inrush Current Limiters (ICL) Replacement Considerations

No public confirmed substitute part numbers are available in the provided data.