---
title: Non-Magnetic Capacitors for Medical Imaging Applications
description: Imaging systems account for a huge portion of the medical devices & electronics industry - one of the most common is magnetic resonance imaging (MRI).
image: https://blog.knowlescapacitors.com/hubfs/mri_ctr5.jpg
---

[![Knowlescapacitors](https://blog.knowlescapacitors.com/hubfs/Knowlescapacitors_September2018/Images/knowlesPDWhite250w.png)](http://www.knowlescapacitors.com/)

- Capacitors 
    - [Capacitor Overview](https://www.knowlescapacitors.com/Products/Capacitors)
    - [Aerospace & Defense](https://www.knowlescapacitors.com/Products/Capacitors/Aerospace-and-Defense)
    - [High Q](https://www.knowlescapacitors.com/Products/Capacitors/High-Q)
    - [SMD Capacitors](http://www.knowlescapacitors.com/Products/Capacitors/SMDCap.aspx)
    - [MLCCs with Leads](http://www.knowlescapacitors.com/Products/Capacitors/Leaded-MLC-s.aspx)
    - [Single Layer Capacitor](http://www.knowlescapacitors.com/Products/Capacitors/Single-Layer-Capacitor.aspx)
    - [AEC-Q200](http://www.knowlescapacitors.com/Products/Capacitors/AEC-Q200.aspx)
    - [Broadband Blocks](http://www.knowlescapacitors.com/Products/Capacitors/Broadband-Blocks.aspx)
    - [Capacitor Assemblies](http://www.knowlescapacitors.com/Products/Capacitors/CAP-Assemblies.aspx)
    - [Trimmer](http://www.knowlescapacitors.com/Products/Capacitors/Trimmer.aspx)
    - [Aluminum Capacitors](https://www.cde.com/capacitors/aluminum-electrolytic/)
    - [Film Capacitors](https://www.cde.com/capacitors/film-paper-film-capacitors/)
    - [Supercapacitors](https://www.cde.com/capacitors/ultracapacitors/)
- RF and Microwave 
    - [RF & Microwave Overview](https://www.knowlescapacitors.com/Products/Microwave-Products)
    - [Filter Technology](https://www.knowlescapacitors.com/Products/Microwave-Products/Filter-Technology)
    - [5G Filters](https://www.knowlescapacitors.com/Products/Microwave-Products/5G-Filters)
    - [Bandpass Filters](http://www.knowlescapacitors.com/Products/Microwave-Products/Bandpass-Filters.aspx)
    - [Lowpass Filters](http://www.knowlescapacitors.com/Products/Microwave-Products/Lowpass-Filters.aspx)
    - [Highpass Filters](http://www.knowlescapacitors.com/Products/Microwave-Products/Highpass-Filters.aspx)
    - [Cavity Filters](http://www.knowlescapacitors.com/Products/Microwave-Products/Cavity-Filters.aspx)
    - [Couplers](http://www.knowlescapacitors.com/Products/Microwave-Products/Couplers.aspx)
    - [High Frequency RF Crossover](https://www.knowlescapacitors.com/Products/Microwave-Products/RF-Crossover)
    - [Custom Design Filters](http://www.knowlescapacitors.com/Products/Microwave-Products/Custom-Design-Filters.aspx)
    - [Gain Equalizers](http://www.knowlescapacitors.com/Products/Microwave-Products/Gain-Equalizers.aspx)
    - [Power Dividers](http://www.knowlescapacitors.com/Products/Microwave-Products/Power-Dividers.aspx)
    - [Resonators](http://www.knowlescapacitors.com/Products/Microwave-Products/Resonatros.aspx)
    - [Ceramic Resonators](https://www.knowlescapacitors.com/Products/Microwave-Products/Ceramic-Resonators)
    - [Bias Filter Networks](http://www.knowlescapacitors.com/Products/Microwave-Products/Bias-Filter-Networks.aspx)
    - [SatCom Products](https://www.knowlescapacitors.com/Products/Microwave-Products/SatCom-Products)
    - [Self Bias Networks](http://www.knowlescapacitors.com/Products/Microwave-Products/Self-Bias-Networks.aspx)
- EMI 
    - [EMI Overview](https://www.knowlescapacitors.com/Products/EMI)
    - [EMI Filters](https://www.knowlescapacitors.com/Products/EMI/EMI-Filters)
    - [Planars and Discoidals](https://www.knowlescapacitors.com/Products/EMI/Planars-and-Discoidals)
- Non Magnetic 
    - [Non-Magnetic Overview](https://www.knowlescapacitors.com/Products/Non-magnetic-Components)
    - [Non-Magnetic Hardware](http://www.knowlescapacitors.com/Products/Non-magnetic-Components/Hardware.aspx)
    - [Non-Magnetic Inductors](http://www.knowlescapacitors.com/Products/Non-magnetic-Components/Inductors.aspx)
    - [Non-Magnetic MLC's](http://www.knowlescapacitors.com/Products/Non-magnetic-Components/Non-Magnetic.aspx)
    - [Non-Magnetic Trimmers](http://www.knowlescapacitors.com/Products/Non-magnetic-Components/Trimmers.aspx)
- Thin Film and Substrates 
    - [Heatsinks & Standoffs](https://www.knowlescapacitors.com/Products/Thin-Film-and-Substrates/Heatsinks-Standoffs)
    - [Mounting Shorts](https://www.knowlescapacitors.com/Products/Thin-Film-and-Substrates/Mounting-Shorts)
    - [Submounts](https://www.knowlescapacitors.com/Products/Thin-Film-and-Substrates/Submounts)
    - [Build to Print](https://www.knowlescapacitors.com/Products/Thin-Film-and-Substrates/Build-To-Print)
    - [Substrates](http://www.knowlescapacitors.com/Products/Thin-Film-and-Substrates/Substrates.aspx)

- Solutions 
    - [Inductors & Baluns](https://info.knowlescapacitors.com/inductors-and-baluns)
    - [Military and Defense](https://info.knowlescapacitors.com/rf-and-microwave-components-for-military-and-defense)
    - [mmWave for 5G](https://info.knowlescapacitors.com/knowles-precision-devices-5g-filter-solutions)
    - [SatCom Products](https://www.knowlescapacitors.com/Solutions/SatCom-Products)
    - [High Reliability for Medical](https://info.knowlescapacitors.com/high-reliability-capacitors-medical-implantable)
    - [High Voltage for Electric Vehicles](https://info.knowlescapacitors.com/knowles-precision-devices-capacitors-for-electric-vehicles)
- [Contact](http://www.knowlescapacitors.com/Contact.aspx)
- [Careers](https://www.knowles.com/careers)
- [Company](http://www.knowlescapacitors.com/Company.aspx)
- Support 
    - [Blog](https://blog.knowlescapacitors.com/blog)
    - [White Papers & Webinars](https://info.knowlescapacitors.com/resources)
    - [Catalogs](http://www.knowlescapacitors.com/Support/Catalogs.aspx)
    - [Video FAQs](https://info.knowlescapacitors.com/videos)
    - [Capacitor Basics](https://info.knowlescapacitors.com/knowles-precision-devices-capacitor-basics)
    - [Build To Print Basics](https://info.knowlescapacitors.com/build-to-print-basics)
    - [Filter Basics](https://info.knowlescapacitors.com/filter-basics)
    - [RF Components for Radar](https://info.knowlescapacitors.com/knowles-precision-devices-radar-funadamentals)
    - [Design Tools](http://www.knowlescapacitors.com/Support/Design-Tools.aspx)
    - [Product Compliance](https://info.knowlescapacitors.com/product-compliance)
    - [Quality](https://www.knowlescapacitors.com/Support/Quality)
    - [Resources](http://www.knowlescapacitors.com/Support/Resources.aspx)
- [LOGIN](http://www.knowlescapacitors.com/Special-Pages/Login.aspx)
- <http://www.knowlescapacitors.com/Search.aspx>

- Capacitors 
    - [Capacitor Overview](https://www.knowlescapacitors.com/Products/Capacitors)
    - [Aerospace & Defense](https://www.knowlescapacitors.com/Products/Capacitors/Aerospace-and-Defense)
    - [High Q](https://www.knowlescapacitors.com/Products/Capacitors/High-Q)
    - [SMD Capacitors](http://www.knowlescapacitors.com/Products/Capacitors/SMDCap.aspx)
    - [MLCCs with Leads](http://www.knowlescapacitors.com/Products/Capacitors/Leaded-MLC-s.aspx)
    - [Single Layer Capacitor](http://www.knowlescapacitors.com/Products/Capacitors/Single-Layer-Capacitor.aspx)
    - [AEC-Q200](http://www.knowlescapacitors.com/Products/Capacitors/AEC-Q200.aspx)
    - [Broadband Blocks](http://www.knowlescapacitors.com/Products/Capacitors/Broadband-Blocks.aspx)
    - [Capacitor Assemblies](http://www.knowlescapacitors.com/Products/Capacitors/CAP-Assemblies.aspx)
    - [Trimmer](http://www.knowlescapacitors.com/Products/Capacitors/Trimmer.aspx)
    - [Aluminum Capacitors](https://www.cde.com/capacitors/aluminum-electrolytic/)
    - [Film Capacitors](https://www.cde.com/capacitors/film-paper-film-capacitors/)
    - [Supercapacitors](https://www.cde.com/capacitors/ultracapacitors/)
- RF and Microwave 
    - [RF & Microwave Overview](https://www.knowlescapacitors.com/Products/Microwave-Products)
    - [Filter Technology](https://www.knowlescapacitors.com/Products/Microwave-Products/Filter-Technology)
    - [5G Filters](https://www.knowlescapacitors.com/Products/Microwave-Products/5G-Filters)
    - [Bandpass Filters](http://www.knowlescapacitors.com/Products/Microwave-Products/Bandpass-Filters.aspx)
    - [Lowpass Filters](http://www.knowlescapacitors.com/Products/Microwave-Products/Lowpass-Filters.aspx)
    - [Highpass Filters](http://www.knowlescapacitors.com/Products/Microwave-Products/Highpass-Filters.aspx)
    - [Cavity Filters](http://www.knowlescapacitors.com/Products/Microwave-Products/Cavity-Filters.aspx)
    - [Couplers](http://www.knowlescapacitors.com/Products/Microwave-Products/Couplers.aspx)
    - [Custom Design Filters](http://www.knowlescapacitors.com/Products/Microwave-Products/Custom-Design-Filters.aspx)
    - [Gain Equalizers](http://www.knowlescapacitors.com/Products/Microwave-Products/Gain-Equalizers.aspx)
    - [Power Dividers](http://www.knowlescapacitors.com/Products/Microwave-Products/Power-Dividers.aspx)
    - [Resonators](http://www.knowlescapacitors.com/Products/Microwave-Products/Resonatros.aspx)
    - [Ceramic Resonators](https://www.knowlescapacitors.com/Products/Microwave-Products/Ceramic-Resonators)
    - [Bias Filter Networks](http://www.knowlescapacitors.com/Products/Microwave-Products/Bias-Filter-Networks.aspx)
    - [SatCom Products](https://www.knowlescapacitors.com/Products/Microwave-Products/SatCom-Products)
    - [Self Bias Networks](http://www.knowlescapacitors.com/Products/Microwave-Products/Self-Bias-Networks.aspx)
- EMI 
    - [EMI Overview](https://www.knowlescapacitors.com/Products/EMI)
    - [EMI Filters](https://www.knowlescapacitors.com/Products/EMI/EMI-Filters)
    - [Planars and Discoidals](https://www.knowlescapacitors.com/Products/EMI/Planars-and-Discoidals)
- Non Magnetic 
    - [Non-Magnetic Overview](https://www.knowlescapacitors.com/Products/Non-magnetic-Components)
    - [Non-Magnetic Hardware](http://www.knowlescapacitors.com/Products/Non-magnetic-Components/Hardware.aspx)
    - [Non-Magnetic Inductors](http://www.knowlescapacitors.com/Products/Non-magnetic-Components/Inductors.aspx)
    - [Non-Magnetic MLC's](http://www.knowlescapacitors.com/Products/Non-magnetic-Components/Non-Magnetic.aspx)
    - [Non-Magnetic Trimmers](http://www.knowlescapacitors.com/Products/Non-magnetic-Components/Trimmers.aspx)
- Thin Film and Substrates 
    - [Heatsinks, Standoffs & Submounts](https://www.knowlescapacitors.com/Products/Thin-Film-and-Substrates/Heatsinks-Standoffs)
    - [Mounting Shorts](https://www.knowlescapacitors.com/Products/Thin-Film-and-Substrates/Mounting-Shorts)
    - [Submounts](https://www.knowlescapacitors.com/Products/Thin-Film-and-Substrates/Submounts)
    - [Build to Print](https://www.knowlescapacitors.com/Products/Thin-Film-and-Substrates/Build-To-Print)
    - [Substrates](http://www.knowlescapacitors.com/Products/Thin-Film-and-Substrates/Substrates.aspx)
- Solutions 
    - [Inductors & Baluns](https://info.knowlescapacitors.com/inductors-and-baluns)
    - [Military and Defense](https://info.knowlescapacitors.com/rf-and-microwave-components-for-military-and-defense)
    - [mmWave for 5G](https://info.knowlescapacitors.com/knowles-precision-devices-5g-filter-solutions)
    - [SatCom Products](https://www.knowlescapacitors.com/Solutions/SatCom-Products)
    - [High Reliability for Medical](https://info.knowlescapacitors.com/high-reliability-capacitors-medical-implantable)
    - [High Voltage for Electric Vehicles](https://info.knowlescapacitors.com/knowles-precision-devices-capacitors-for-electric-vehicles)
- [Contact](http://www.knowlescapacitors.com/Contact.aspx)
- [Careers](https://www.knowles.com/careers)
- [Company](http://www.knowlescapacitors.com/Company.aspx)
- Support 
    - [Blog](https://blog.knowlescapacitors.com/blog)
    - [White Papers & Webinars](https://info.knowlescapacitors.com/resources)
    - [Catalogs](http://dev.knowlescapacitors.com/Support/Catalogs.aspx)
    - [Video FAQs](https://info.knowlescapacitors.com/videos)
    - [Capacitor Basics](https://info.knowlescapacitors.com/knowles-precision-devices-capacitor-basics)
    - [Build To Print Basics](https://info.knowlescapacitors.com/build-to-print-basics)
    - [Filter Basics](https://info.knowlescapacitors.com/filter-basics)
    - [RF Components for Radar](https://info.knowlescapacitors.com/knowles-precision-devices-radar-funadamentals)
    - [Design Tools](http://www.knowlescapacitors.com/Support/Design-Tools.aspx)
    - [Quality](https://www.knowlescapacitors.com/Support/Quality)
    - [Product Compliance](https://info.knowlescapacitors.com/product-compliance)
    - [Resources](http://www.knowlescapacitors.com/Support/Resources.aspx)
- [LOGIN](http://www.knowlescapacitors.com/Special-Pages/Login.aspx)
- <http://www.knowlescapacitors.com/Search.aspx>

## Knowles Precision Devices Blog

# Non-Magnetic Capacitors for Medical Imaging Applications

Posted by [Peter Matthews](https://blog.knowlescapacitors.com/blog/author/peter-matthews) on Sep 18, 2019 10:46:00 AM

![Peter Matthews](https://blog.knowlescapacitors.com/hubfs/Peter.png)

- [Tweet](https://twitter.com/share)

Imaging systems account for a significant portion of the medical devices and electronics industry. There is an expanding range of imaging modalities, and one of the most common is magnetic resonance imaging (MRI). MRI equipment uses a strong magnetic field and computer-generated radio waves to create cross sectional images of the body; these images enable health care professionals to investigate and diagnose without the need for an invasive procedure.

![mri_ctr5](https://blog.knowlescapacitors.com/hs-fs/hubfs/mri_ctr5.jpg?width=319&name=mri_ctr5.jpg)

MRI is an application of nuclear magnetic resonance (NMR), a popular analytical technique to determine molecular identity and structure based on biological, chemical, and physical properties of matter. In the medical field, MRI is a multidimensional version of the NMR imaging tool found in most chemistry laboratories.

**Non-Magnetic Capacitors**

The resolution, or clarity, of an MRI image is dependent on the strength of the magnetic field. Ancillary equipment and magnetic components inside the MRI scanner tunnel can alter the field strength; so, it is vital that components, such as capacitors, are non-magnetic to preserve the desired field strength. 

Many capacitors are designed with a nickel barrier finish to maintain solderability. Due to nickel’s magnetic properties, these capacitors are not acceptable for medical applications including MRI. Careful material selection is pivotal. Even the smallest trace of magnetic property could adversely affect the quality of the MRI image output.

Knowles Precision Devices (KPD) offers non-magnetic multilayer ceramic capacitors with silver/palladium (Ag/Pd) terminations for medical applications where non-magnetic components are required. In addition, for those looking to meet The Restriction of Hazardous Substances Directive (RoHS) requirement for lead-free solders, KPD offers a copper barrier, instead of a nickel barrier, with a tin finish on top. This alternative is lead-free while avoiding increased soldering temperatures and leaching problems. This type of non-magnetic termination is offered with select non-magnetic C0G, high Q, and X7R dielectrics to provide a fully non-magnetic component.

[Learn more about our non-magnetic MLC range.](https://www.knowlescapacitors.com/Products/Capacitors/SMDCap/Non-Magnetic)

 Topics: [Capacitor](https://blog.knowlescapacitors.com/blog/tag/capacitor), [Medical](https://blog.knowlescapacitors.com/blog/tag/medical)

## Insights Into Precision Passive Devices

Knowles Precision Devices is a premier global source for Capacitors, RF Filters, EMI Filters, Resonators, non-magnetic components and advanced dielectric materials. An umbrella for the brands of **Compex**, **DLI**, **Johanson MFG**, **Novacap**, **Syfer** and **Voltronics**, Knowles Precision Devices serves a variety of markets including military, aerospace/avionics, medical equipment, implantable devices, EMI and connector filtering, oil exploration, instrumentation, industrial electronics, automotive, telecoms and data networks.

This Blog will provide insights into:

- Filters for 5G and mmWave
- Capacitors for High Voltage
- Capacitors for High Reliability

and much more. Subscribe below to stay informed.

### Subscribe Here!

### Recent Posts

### Post By Topics

- [Capacitor (154)](https://blog.knowlescapacitors.com/blog/tag/capacitor)
- [RF and Microwave (84)](https://blog.knowlescapacitors.com/blog/tag/rf-and-microwave)
- [Military and Aerospace (47)](https://blog.knowlescapacitors.com/blog/tag/military-and-aerospace)
- [Filtering (36)](https://blog.knowlescapacitors.com/blog/tag/filtering)
- [Medical (34)](https://blog.knowlescapacitors.com/blog/tag/medical)

- Industries 
    - [Automotive](http://www.knowlescapacitors.com/Industries/Automotive.aspx)
    - [Industrial](http://www.knowlescapacitors.com/Industries/Industrial.aspx)
    - [Medical](http://www.knowlescapacitors.com/Industries/Medical.aspx)
    - [Military](http://www.knowlescapacitors.com/Industries/Military.aspx)
    - [Space](http://www.knowlescapacitors.com/Industries/Space.aspx)
    - [Telecom](http://www.knowlescapacitors.com/Industries/Telecom.aspx)

- Company 
    - [About](http://www.knowlescapacitors.com/Company.aspx)
    - [News](http://www.knowlescapacitors.com/News.aspx)
    - [Quality](http://www.knowlescapacitors.com/Quality.aspx)
    - [Privacy Policy](https://www.knowles.com/privacy-policy)
    - [Terms & Conditions](http://www.knowlescapacitors.com/getattachment/Knowles-T-C.pdf.aspx?lang=en-US)
    - [Knowles Electronics, LLC](https://www.knowles.com/)

© Knowles Capacitors All Rights Reserved

```json
{
  "@context" : "https://schema.org",
  "@type" : "BlogPosting",
  "author" : {
    "@type" : "Person",
    "name" : "Peter Matthews",
    "url" : "https://blog.knowlescapacitors.com/blog/author/peter-matthews"
  },
  "dateModified" : "2020-08-03T19:48:59.304Z",
  "datePublished" : "2019-09-18T14:46:00.000Z",
  "headline" : "Non-Magnetic Capacitors for Medical Imaging Applications",
  "image" : [ "https://blog.knowlescapacitors.com/hubfs/mri_ctr5.jpg" ],
  "mainEntityOfPage" : {
    "@id" : "https://blog.knowlescapacitors.com/blog/medical-imaging-capacitors",
    "@type" : "WebPage"
  },
  "publisher" : {
    "@type" : "Organization",
    "logo" : {
      "@type" : "ImageObject",
      "url" : "https://blog.knowlescapacitors.com/hubfs/Knowles%20Corporate%20logo_blue.png"
    },
    "name" : "Knowles Precision Devices"
  }
}
```