Ametherm SL22 4R014

  • Ametherm

Product Features

  • Inrush current limiting thermistor
  • Resistance of 4Ω (at 25°C)
  • Maximum steady state current of 14A
  • Maximum recommended energy of 100J
  • Voltage ratings of 120VAC and 240VAC
  • Body temperature of +214°C at maximum current
  • UL

Applications

  • Exempt

The SL22 4R014 inrush current limiting thermistor from Ametherm offers a maximum steady state current of 14A (up to +25°C), resistance of 4Ω ±20% (at 25°C) and a maximum recommended energy rating of 100J. The Ametherm SL series suppresses surge currents that occur when electrical circuits are switched on, preventing serious damage to sensitive electronic components if their rated current values are exceeded. Connected in series with the load, at “switch-on” they limit the current due to its relatively high cold resistance. As a result of current flow, the thermistor self-heats and in turn reducing its resistance value so that once the initial surge current has been safely held off, the resistance in the thermistor is maintained at a low value to maximise efficiency

  • Inrush current limiting thermistor
  • Resistance of 4Ω (at 25°C)
  • Maximum steady state current of 14A (up to +25°C)
  • Maximum recommended energy of 100J
  • Voltage ratings of 120VAC and 240VAC
  • Actual energy failure at 250J
  • 0.05Ω at 100% maximum current and 0.12Ω at 50% maximum current
  • Body temperature of +214°C at maximum current
  • Dissipation constant of 32.4mW/°C
  • Tolerance ±20%
  • Thermal time constant of 94mW/s
  • Material Type C (for Beta and Curve)
  • Recognised by Underwriters Laboratories (UL) for ensured safety

 

Typical applications for the SL series include:

  • Limit current inrush to PSUs and battery chargers
  • Lighting circuits and thermostat protection
  • Electric motor soft start

The below table gives the full specifications of the Ametherm SL22 4R014 series:

Ametherm SL22 4R014 Specifications

Ametherm SL22 4R014

Quantity
Calculators and Convertors

Work out what you need for your project. Go to calculators and convertors

Contact us if you need your items quicker or need more than in stock.

Specifications

Weight 0.00000 kg
Dimensions 31.22 x 6.00 x 22.00mm
Actual Energy Failure

250J

Dissipation Constant

32.4mW/°C

Material Type

Maximum Steady State Current

14A

Package / Size

Resistance at +25°C

Series / Model

,

Thermal Time Constant

94mW/s

Tolerance

Voltage Rating

,

RoHS Compliant Product with Exemption – Ametherm

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)

Ametherm SL22 4R014 Technical Library

We are pleased to provide you with a range of additional content including technical videos, the latest product datasheets, case studies, white papers and application notes for your reference. Please see below for the latest content available:

 

 

DOCUMENTATION
PDF Document Ametherm SL22 4R014 inrush current limiting thermistor datasheet

Ametherm AS, MS and SL Videos

We are pleased to provide you with a range of videos, please see below for the latest content available:

 

 

VIDEOS
Place holder video for YouTube video 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.

Place holder video for YouTube video 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.

Place holder video for YouTube video 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
Place holder video for YouTube video
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.

Place holder video for YouTube video
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.

Place holder video for YouTube video
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.

  • Ametherm

Ametherm SL22 4R014

Quantity