MS1530004

Inrush Current Limiters (ICL) Overview

The MS1530004 is a negative temperature coefficient (NTC) thermistor inrush current limiter from the Vishay Ametherm MegaSurge MS15 series. It features a nominal resistance of 30 Ohms at 25°C with a tolerance of ±25%. The device supports a maximum steady-state current of 4.2 A and exhibits a low hot resistance of 230 mOhms. Physically, it has a diameter of 17.00 mm (0.670 inches) and a lead spacing of 7.80 mm (0.307 inches). The component is RoHS3 compliant and holds UL approval for circuit protection applications.

Inrush Current Limiters (ICL) Feature Summary

• Utilizes NTC thermistor technology to provide high initial resistance that decreases as temperature rises, effectively limiting surge currents during power-up.
• Designed for radial leaded mounting with a robust 17mm diameter package suitable for through-hole PCB integration.
• Certified by UL agency, ensuring compliance with safety standards for electronic circuit protection components.

Inrush Current Limiters (ICL) Applications

• Limiting inrush current in capacitive loads such as switch-mode power supplies
• Protecting sensitive electronic circuits from thermal stress during startup phases
• DC inrush current limiting applications requiring reliable surge suppression

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm exact electrical tolerances and physical dimensions. Ensure the selected variant matches the required steady-state current rating of 4.2 A and nominal resistance of 30 Ohms for the target application. Confirm RoHS3 compliance status if environmental regulations apply to the final product assembly.

Inrush Current Limiters (ICL) Selection Notes

Select this component based on the required nominal resistance value of 30 Ohms and the maximum steady-state current capacity of 4.2 A. Consider the physical dimensions, specifically the 17mm diameter and 7.8mm lead spacing, to ensure compatibility with the printed circuit board layout. Evaluate the thermal characteristics and hot resistance of 230 mOhms to determine suitability for the specific load profile and surge energy requirements.

Inrush Current Limiters (ICL) Part Context

The MS1530004 belongs to the MegaSurge MS15 series of inrush current limiters manufactured by Vishay Ametherm. This series is engineered for general-purpose circuit protection, offering a balance of high peak current handling and low operating resistance. The part is classified under circuit protection components and is actively produced, serving as a standard solution for managing electrical surges in various electronic devices.

Inrush Current Limiters (ICL) Replacement Considerations

Cross-reference alternative NTC inrush limiters with matching 30 Ohm nominal resistance and similar 4A+ current ratings. Verify that substitute components maintain comparable physical dimensions and lead spacing to fit existing footprints. Ensure any replacement part meets the same UL safety approvals and RoHS3 environmental compliance standards as the original MS1530004 specification.