SL12 5R004-A

Inrush Current Limiters (ICL) Overview

The Vishay Ametherm SL125R004-A is a Negative Temperature Coefficient (NTC) thermistor designed as an inrush current limiter. It features a nominal resistance of 5 Ohms with a tolerance of ±20%. The component supports a continuous current rating of 4 A and operates at voltage ratings of 115 VAC and 230 VAC. Physical dimensions include a diameter of 12 mm, width of 6 mm, and lead spacing of 7.8 mm. It utilizes radial kinked leads for PCB mounting.

Inrush Current Limiters (ICL) Feature Summary

• Functions as an inrush current limiter to protect electronic circuits from high startup currents.
• Utilizes NTC thermistor technology to provide high initial resistance that decreases as temperature rises.
• Designed for reliable PCB mounting with radial kinked lead configuration.

Inrush Current Limiters (ICL) Applications

• Power supply input stages
• Transformer protection circuits
• Motor drive systems

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific suffix 'A' against the manufacturer datasheet to confirm if it denotes a specific packaging variant or mechanical difference compared to the standard SL125R004. Ensure the 4 A current rating and 5 Ohm resistance align with the target circuit requirements. Confirm UL approval status if required for the end application.

Inrush Current Limiters (ICL) Selection Notes

Select this component when a 5 Ohm cold resistance is required to limit inrush current for loads drawing up to 4 A. The 12 mm diameter provides sufficient thermal mass for repeated switching cycles. Ensure the PCB layout accommodates the 7.8 mm lead spacing and radial kinked form factor for proper mounting.

Inrush Current Limiters (ICL) Part Context

This part belongs to the SL12 series of inrush current limiters from Vishay Ametherm. The series offers various resistance and current combinations tailored for different power levels. The SL125R004-A specifically targets applications requiring moderate inrush limiting capabilities within a compact radial package.

Inrush Current Limiters (ICL) Replacement Considerations

The SL125R004 is a direct functional equivalent with identical electrical parameters. Verify if the 'A' suffix indicates a specific packaging or marking variation rather than a change in electrical performance before substituting.