3/30/2026 7:37:06 AM   By  Symond  in


Introduction

The Inrush Current Limiters SG40 by Ametherm are advanced thermistor-based components designed to protect electronic circuits from high inrush currents during power-up. These devices are widely used in Circuit Protection, Thermistors, Inrush Current Limiters where controlling surge current is critical for system safety and longevity. Manufactured by Ametherm, the SG40 Inrush Current Limiters ensure reliable performance and enhanced protection in a wide range of applications.


Technical Specifications of SG40 Inrush Current Limiters

General Specifications

  • Manufacturer: Ametherm

  • Part Number: SG40

  • Product Type: Inrush Current Limiter (NTC Thermistor)

  • Resistance Type: Negative Temperature Coefficient (NTC)

  • Mounting Type: Through Hole

  • Operating Temperature Range: Wide industrial range

  • Response Time: Fast thermal response

  • Power Handling: High surge capability

  • Product Category: Circuit Protection, Thermistors, Inrush Current Limiters

These specifications make the SG40 ideal for surge protection in Circuit Protection, Thermistors, Inrush Current Limiters applications.


Key Features of SG40 Inrush Current Limiters

Design and Performance Benefits

  • Effective inrush current suppression

  • High energy absorption capability

  • Fast response to temperature changes

  • Compact and reliable design

  • Improved equipment lifespan

The SG40 Inrush Current Limiters by Ametherm are engineered to meet the demands of Circuit Protection, Thermistors, Inrush Current Limiters systems.


Applications of SG40 Inrush Current Limiters

Common Use Cases

  • Power supplies

  • Industrial equipment

  • Consumer electronics

  • Motor drives

  • Lighting systems

These applications highlight the versatility of SG40 Inrush Current Limiters in Circuit Protection, Thermistors, Inrush Current Limiters across multiple industries.


Circuit Integration Overview

Installation Guidelines

  • Place in series with power input

  • Ensure proper thermal spacing

  • Avoid direct contact with heat-sensitive components

  • Verify resistance rating based on application

Proper integration ensures optimal performance in Circuit Protection, Thermistors, Inrush Current Limiters applications.


Use Case Example: Power Supply Protection

Practical Implementation

  • Application: Switching power supply

  • Challenge: High inrush current during startup

  • Solution: SG40 Inrush Current Limiters by Ametherm

  • Result: Reduced surge current and improved component protection

This example demonstrates the effectiveness of SG40 Inrush Current Limiters in Circuit Protection, Thermistors, Inrush Current Limiters applications.


Datasheet Information

For detailed electrical characteristics, resistance curves, and thermal properties, refer to the official Ametherm datasheet available through authorized distributors.


Why Buy SG40 Inrush Current Limiters from X-On Electronics?

Purchasing SG40 Inrush Current Limiters by Ametherm from
X-On Electronics ensures:

  • 100% genuine Ametherm components

  • Competitive pricing and bulk availability

  • Fast global shipping

  • Dedicated technical and customer support

Order today from X-On Electronics for trusted Circuit Protection, Thermistors, Inrush Current Limiters solutions.


FAQs – SG40 Inrush Current Limiters

What is SG40 used for?

It is used to limit inrush current during power-up.

What type of thermistor is it?

It is an NTC (Negative Temperature Coefficient) thermistor.

Where is it commonly used?

It is widely used in power supplies and industrial electronics.

Does it improve equipment lifespan?

Yes, it protects components from surge damage.

Where can I buy this product online?

You can buy it from X-On Electronics with worldwide delivery.


Conclusion

The SG40 Inrush Current Limiters by Ametherm provide a reliable and efficient solution for managing inrush current in electronic systems. As a trusted component in Circuit Protection, Thermistors, Inrush Current Limiters, they ensure improved safety, durability, and performance in modern applications.


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