SG345

Inrush Current Limiters (ICL) Overview

The SG345 is a radial leaded NTC thermistor inrush current limiter from the Vishay Ametherm SURGE-GARD series. It features kinked leads for PCB mounting and provides 60 Ohms nominal resistance with ±10% tolerance. The component supports a steady-state current of 1.5 A and operates within a voltage range up to 265 VAC. Physical dimensions include a diameter of 0.600 inches (15.24 mm) and a maximum operating temperature of +65°C.

Inrush Current Limiters (ICL) Feature Summary

• Utilizes negative temperature coefficient thermistor technology to limit initial surge currents during power-up
• Features kinked radial leads designed for secure through-hole PCB mounting
• Provides stable resistance characteristics within the specified operating temperature range

Inrush Current Limiters (ICL) Applications

• Power supply input stages
• Electronic equipment surge protection
• Consumer appliance circuitry

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific suffix or variant against the official datasheet to ensure compatibility with required thermal and electrical ratings. Confirm that the kinked lead configuration matches the target PCB footprint. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and traceability before finalizing procurement orders.

Inrush Current Limiters (ICL) Selection Notes

Select this component based on the required 60 Ohm resistance value and 1.5 A current handling capability. Ensure the PCB layout accommodates the 0.600-inch diameter and kinked lead spacing. Evaluate the thermal environment to confirm operation remains within the +65°C maximum limit while maintaining effective inrush limiting performance.

Inrush Current Limiters (ICL) Part Context

This device belongs to the SURGE-GARD product line, which specializes in NTC thermistors for protecting sensitive electronics from high initial charging currents. The SG series offers various resistance and current options tailored for different power levels and form factors.

Inrush Current Limiters (ICL) Replacement Considerations

Direct substitutes must match the 60 Ohm resistance, 1.5 A rating, and kinked lead style. Verify thermal characteristics and physical dimensions to ensure fitment without redesigning the PCB.