Medical Application: Non-Magnetic Connectors

CHIN NAN offers a wide range of non-magnetic coaxial connectors, including the SMA, SMA 27G, MCX, MMCX, SMB, and SMT series.

These non-magnetic coaxial connectors are specifically designed to meet the demands of MRI (Magnetic Resonance Imaging) medical equipment, where the absence of magnetic interference is crucial.

The production process involves meticulous selection of materials and plating, along with strictly controlled manufacturing and inspection procedures. This ensures that the quality and performance of the non-magnetic coaxial connectors meet the stringent requirements of medical applications.

Table of Content

• Why Do I Need Non-Magnetic RF Coaxial Connectors?
• How Does CHIN NAN Manufacture Non-Magnetic Coaxial Connectors?
• Testing method
• Features of Non-Magnetic RF Connectors
• SMA Series features
• MCX Series features
• Summary

Why Do I Need Non-Magnetic RF Coaxial Connectors?

Magnetic Resonance Imaging (MRI), originally known as Nuclear Magnetic Resonance (NMR), is a non-invasive imaging technology that uses powerful magnetic fields and radiofrequency waves combined with computer technology to generate cross-sectional images of the human body. MRI enables clinicians to effectively examine and diagnose internal structures and abnormalities in the body without exposing patients to radiation.

Modern medical diagnostics heavily rely on MRI equipment. In certain cases, components made with magnetic materials may interfere with the stability of the magnetic field, thereby affecting image quality. Poor-quality images can lead to diagnostic errors and even inappropriate treatments.

MRI Equipment

The uniformity of the magnetic field and the signal-to-noise ratio are critical factors that affect the image quality of MRI. Therefore, selecting non-magnetic metals as materials is essential for the performance of MRI equipment.

Any magnetic components or materials can disrupt the uniformity of the magnetic field, thereby reducing imaging quality. To ensure imaging accuracy, coaxial connectors, cables, and capacitors used in MRI equipment should avoid the use of magnetic materials.

MRI Equipment

 

MRI scan image of the brain

With the continuous advancement of MRI technology, CHIN NAN has been consistently improving its low magnetic susceptibility non-magnetic connectors to meet the needs of the medical industry. Beyond the medical field, we have also discovered that non-magnetic plating technology is suitable for other industries requiring non-magnetic characteristics, such as WiFi communications, antennas, and measurement equipment.

Not sure if you need non-magnetic connectors? Contact our customer service team at service@chinnan.com.tw or fill out the contact form on our website, and let CHIN NAN provide you with expert advice!

How Does CHIN NAN Manufacture Non-Magnetic Coaxial Connectors?

Unlike standard coaxial connectors commonly made from brass or nickel materials in the market, non-magnetic coaxial connectors are typically produced using low magnetic susceptibility metals, such as alloys like beryllium copper, silver, or white bronze. Stainless steel, brass, or nickel containing trace amounts of iron may exhibit magnetic properties, making them less ideal materials for non-magnetic coaxial connectors.
 

CHIN NAN utilizes beryllium copper and high-quality non-magnetic plating to manufacture non-magnetic coaxial connectors. This eliminates magnetic interference while meeting the stringent manufacturing requirements of MRI systems and the medical industry.
 
By adhering to rigorous quality control procedures, CHIN NAN manufactures non-magnetic coaxial connectors through tightly controlled production and inspection processes. The machining and assembly are carried out in a clean environment to prevent any potential magnetic contamination, ensuring the superior magnetic properties of the non-magnetic connectors.

Testing Method

Hysteresis loop & B-H curve of Magnetic Testing by SQUID
(Superconducting Quantum Interference Device)

• Use SQUID VSM equipment to analyze and calculate the magnetic induction strength of each material under high magnetic field.
• Calculate the total weight of materials in the product.
• Combine various material parameters for calculation.
• Confirm the total magnetic amount of the product meets customer quality requirements.
• Perform magnetic quality inspection and confirmation of mass-produced products (using ultra-high magnetic strength magnets to test connectors).

Magnetic susceptibility: quantitative measure of the extent
which a material may be magnetized in relation to a given applied magnetic field.
(Source: Encyclopedia Britannica)

Non-magnetic connector is not attracted by magnet

Standard connector is attracted by magnet

Features of Non-Magnetic RF Connectors

CHIN NAN's non-magnetic coaxial connectors have a low magnetic susceptibility, which minimizes magnetic field distortion and ensures superior image quality—traits essential for MRI or medical imaging equipment. Additionally, they offer excellent electrical and mechanical performance.

SMA Series Features

• 0 GHz up to 18 GHz
• 50 Ohm Impedance
• Beryllium brass material for non-magnetic connectors
• Ideal for medical applications like MRI
• Conform to MIL-STD-348A standard interface
• Outstanding mechanical durability
• Non-magnetic options available for medical and aerospace applications

Want to learn more about our products? Explore CHIN NAN's high-performance SMA connectors specially selected for medical equipment to enhance signal transmission stability!

MCX Series Features

• 0 GHz to 6 GHz
• 50 Ω or 75 Ω options available 
• Fast and easy snap-on / snap-off coupling
• Conform to European CECC 22220 interface
• 30% smaller than SMB
• MMCX is smaller, has same foot print of MCX and has all features that MCX series has
• Non-magnetic options available for medical and aerospace applications, including printed circuit board and cable connectors

Want to learn more about our products? Explore CHIN NAN's high-performance MCX connectors specially selected for medical equipment to enhance signal transmission stability!

Summary

CHIN NAN provides high-performance non-magnetic connectors that help improve scan quality and the readability and accuracy of images. We also offer a wide range of non-magnetic coaxial connector series for medical, communication, and measurement equipment, including SMA, SMA 27G, MCX, MMCX, SMB, and SMT. If there are special functional requirements, we can customize other series of connectors into non-magnetic connectors based on customer needs.
 

CHIN NAN has established a strictly controlled production and inspection process and a clean working environment to prevent any magnetic substances from affecting or interfering with the non-magnetic connectors during manufacturing. Our high-performance non-magnetic coaxial connectors provide better choices for manufacturers of MRI, other types of diagnostic imaging equipment, and any devices requiring non-magnetic interference.

If you are looking for more details about our non-magnetic connectors, click here to explore CHIN NAN's non-magnetic connector series.

Need further assistance? Contact our professional customer service team at service@chinnan.com.tw or fill out the contact form on our website, and let CHIN NAN provide you with expert advice on non-magnetic connectors!