SL1547003T

Inrush Current Limiters (ICL) Overview

The SL1547003T is a Negative Temperature Coefficient (NTC) thermistor inrush current limiter from the Vishay Ametherm SL15 series. It features a nominal resistance of 47 Ohms with a tolerance of ±20% and a maximum steady-state current rating of 3 A at up to 65°C. The component has a cylindrical body diameter of 16 mm and utilizes radial leads for PCB mounting. It is designed to withstand a maximum recommended energy of 50 Joules, limiting initial surge currents in electronic circuits.

Inrush Current Limiters (ICL) Feature Summary

• Provides effective limitation of high inrush currents during power-up sequences
• Utilizes NTC thermistor technology for automatic resistance reduction after startup
• Designed for robust performance under repeated surge conditions

Inrush Current Limiters (ICL) Applications

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

Inrush Current Limiters (ICL) Procurement Notes

Verify that the specific part number includes the 'T' suffix, which typically indicates tape-and-reel packaging rather than bulk. Confirm the voltage ratings align with your system's AC or DC requirements. Ensure the thermal environment allows for proper heat dissipation to maintain the 3 A steady-state current capability without exceeding temperature limits.

Inrush Current Limiters (ICL) Selection Notes

Select this component when a 47 Ohm initial resistance and 3 A current handling capacity are required. The 16 mm diameter provides higher energy absorption compared to smaller packages. Consider the lead spacing and mounting style compatibility with your PCB layout. Verify that the 50 Joule energy rating meets the peak surge demands of your specific application circuit.

Inrush Current Limiters (ICL) Part Context

This device belongs to the SL15 series of inrush current limiters, characterized by larger physical dimensions to handle higher energy loads. It serves as a protective component in power electronics, preventing damage to downstream components like rectifiers and capacitors from initial surge currents.

Inrush Current Limiters (ICL) Replacement Considerations

Direct substitutes include other Vishay Ametherm parts within the SL15 series with matching electrical parameters, such as SL1547003. Cross-manufacturer replacements must match the 47 Ohm resistance, 3 A current rating, and 16 mm diameter constraints.