The AS35 1R040 inrush current limiting thermistor from Ametherm offers a maximum steady state current of 40A (up to +65°C) and a resistance of 1Ω ±25% (at 25°C). The Ametherm AS series are designed to withstand high steady-state current and input energy. Compared to traditional inrush current limiters, the devices offer lower current density, faster reset times, and a wider temperature range without derating. This lower current density, in combination with a uniform temperature gradient throughout the disc, increases reliability by eliminating hot spots from fatigue. The AS series from Ametherm are suitable for high energy and short term high current applications.
Typical applications for the AS series include:
The below table gives the full specifications of the Ametherm AS35 1R040 series:
| Weight | 0.00000 kg |
|---|---|
| Dimensions | 41.50 x 8.50 x 36.00mm |
| Actual Energy Failure | 1400J |
| Dissipation Constant | 78.2mW/°C |
| Material Type | |
| Maximum Recommended Energy | 800J |
| Maximum Steady State Current | 40A |
| Package / Size | |
| Resistance at +25°C | 1Ω |
| Series / Model | |
| Thermal Time Constant | 55mW/s |
| Tolerance |
This product meets the requirements in compliance with RoHS Directive 2011/65/EU including Directive (EU) 2015/863 amending Annex II, on the restriction of the use of Certain Hazardous Substances in Electrical and Electronic Equipment.
The above product is, however, is not Pb free, using exemption 7(a) “Lead in high melting temperature type solders (i.e. lead-based alloys containing 85% by weight or more lead)“
We are pleased to provide you with a range of additional content including videos, product datasheets, case studies, white papers and application notes for your reference. Please see below for the latest content available:
| DOCUMENTATION | |
|---|---|
| Ametherm AS35 1R040 inrush current limiting thermistor datasheet | |
We are pleased to provide you with a range of videos, please see below for the latest content available:
| VIDEOS | |
|---|---|
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Limiting Inrush Current with NTC and PTC Themistors video
Learn how to limit inrush current using NTC and PTC thermistors in this presentation by Ametherm. Many applications today, including industrial machinery, power tools and other high current equipment, use limiting inrush current as a major design consideration to combat the problematic effects of inrush current. Inrush current occurs when a system powers on and experiences a spike in current. This current can be substantially higher than standard operating current. If not properly managed, it can reduce the effective operating life and impose damage to equipment. For example, inrush current could disable a cooling fan, eventually leading to total system failure. Applications that are switched on and off quickly, such as welding equipment, present a particular concern for limiting inrush current. The limiting inrush current circuit must reset instantaneously during each power on to protect the system. This further complicates the management of inrush current. |
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Limiting Inrush Current for a 40VA Transformer
Inrush current often causes problems for transformers. This video will show you how to calculate the right inrush current limiter for your transformer in 7 simple steps. |
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DC Motor Inrush Current and What You Need to Know
What does inrush current have to do with DC motors? This video answers that question by discussing the cause of DC motor inrush current and how to prevent the inrush of current at startup from possibly damaging the DC motor with the use of Ametherm's Inrush Current Limiters. They start by explaining how a DC motor functions, its applications and key components, how inrush current factors in, how to solve the problem of inrush current, and how to select the right inrush current limiter for your application with three easy steps. |
| VIDEOS | |
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| Limiting Inrush Current with NTC and PTC Themistors video
Learn how to limit inrush current using NTC and PTC thermistors in this presentation by Ametherm. Many applications today, including industrial machinery, power tools and other high current equipment, use limiting inrush current as a major design consideration to combat the problematic effects of inrush current. Inrush current occurs when a system powers on and experiences a spike in current. This current can be substantially higher than standard operating current. If not properly managed, it can reduce the effective operating life and impose damage to equipment. For example, inrush current could disable a cooling fan, eventually leading to total system failure. Applications that are switched on and off quickly, such as welding equipment, present a particular concern for limiting inrush current. The limiting inrush current circuit must reset instantaneously during each power on to protect the system. This further complicates the management of inrush current. |
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| Limiting Inrush Current for a 40VA Transformer
Inrush current often causes problems for transformers. This video will show you how to calculate the right inrush current limiter for your transformer in 7 simple steps. |
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|
| DC Motor Inrush Current and What You Need to Know
What does inrush current have to do with DC motors? This video answers that question by discussing the cause of DC motor inrush current and how to prevent the inrush of current at startup from possibly damaging the DC motor with the use of Ametherm's Inrush Current Limiters. They start by explaining how a DC motor functions, its applications and key components, how inrush current factors in, how to solve the problem of inrush current, and how to select the right inrush current limiter for your application with three easy steps. |
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