SL1540002

Inrush Current Limiters (ICL) Overview

The SL1540002 is a Negative Temperature Coefficient (NTC) thermistor designed for inrush current limiting applications. It features a nominal resistance of 40 Ohms with a tolerance of ±20%. The component supports a maximum steady-state current of 2 Amperes at 25°C ambient temperature. It has a cylindrical body diameter of 15.00 mm (0.591 inches). The device is rated for a maximum recommended energy absorption of 35 Joules and an actual energy failure threshold of 70 Joules, ensuring reliable surge protection in power supply circuits.

Inrush Current Limiters (ICL) Feature Summary

• Utilizes NTC thermistor technology to provide automatic inrush current limitation during power-up
• Features a robust cylindrical package capable of absorbing high energy surges up to 70 Joules
• Designed for high reliability with specific ratings for steady-state current and thermal endurance

Inrush Current Limiters (ICL) Applications

• Surge protection in AC/DC power supplies
• Inrush current limiting for motor drives
• Protection circuits in industrial power electronics

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific part number SL1540002 against official Vishay Ametherm documentation to confirm electrical parameters such as the 40 Ohm resistance and 2 Ampere current rating. Ensure the application environment matches the thermal and energy specifications provided in the datasheet. Confirm that the lead time and availability align with project requirements before finalizing procurement orders.

Inrush Current Limiters (ICL) Selection Notes

Select this component when a 40 Ohm nominal resistance and 2 Ampere continuous current capacity are required for inrush limiting. Consider the 15.00 mm diameter for mechanical fit within the enclosure. Evaluate the 35 Joule energy rating against the peak surge currents expected in the target circuit to ensure adequate safety margins without premature failure.

Inrush Current Limiters (ICL) Part Context

The SL15 series represents Vishay Ametherm's line of NTC thermistors specifically engineered for inrush current limiting. These components are widely used in power conversion systems to protect downstream capacitive loads from high initial charging currents. The SL1540002 variant offers a balance of moderate resistance and current handling suitable for medium-power applications.

Inrush Current Limiters (ICL) Replacement Considerations

Direct substitutes must match the 40 Ohm resistance, 2 A current rating, and 15.00 mm form factor. Verify thermal characteristics and energy absorption capabilities of alternative parts to ensure equivalent performance in the specific circuit topology.