Nowadays, wireless communication and high frequency applications are widespread. The quality and design of connectors play an indispensable role in the stability and efficiency of the overall system. MCX connector (Micro Coaxial Connector) is widely used in GPS, wireless modules, mobile communication devices, and test equipment due to its compact size, wide frequency range, and excellent electrical characteristics. Compared to larger RF connectors, MCX connectors can save space without sacrificing performance, making them ideal for highly integrated and portable devices.
This article will bring you to know about MCX connector, including its basic structure, functional characteristics, common applications, advantages over MMCX connector. As well key points to note when purchasing, hoping to help you have a clearer direction and understanding when choosing RF components.

What is MCX Connector?

MCX Connector is a miniature RF coaxial connector that complies with the European CECC 22000 standard and was introduced in the 1980's. The MCX connector is about half the size of the SMA connector and features a snap on feature that allows the user to easily insert the connector. The structural features of the MCX Connector are listed below:

1. Compact Size: With an outer diameter of only 3.6mm, the MCX connector is suitable for highly integrated or space-constrained applications.
2. Good Impedance Consistency: The standard impedance of MCX connector is 50Ω, which is suitable for most RF devices.
3. Wide Frequency Range: Generally support up to 6 GHz, and some high-end products of MCX connector are up to 10 GHz. That will meet most high frequency requirements.
4. Long Mechanical Life: The mechanical life of MCX connector is more than 500 times, which is suitable for equipment that needs to be tested or moved frequently.

What are the Advantages of MCX Connector?

MCX connector is a miniaturized, high-performance RF connector with a number of advantages for modern high-density electronic equipment. As listed below.

• Compact Size Saves Space

The outer diameter of MCX connector is about 3.6mm, which is about 30% smaller than the common SMA connector. It is very suitable for space-constrained applications, such as smartphone modules, wearable devices, drones, GPS receivers and other devices with very high space requirements.

• Supports High Frequency Signals with Stable Performance.

The MCX connector supports frequency up to 6 GHz, providing good signal integrity and low VSWR. It can be applied to Wi-Fi, LTE, GNSS, satellite receivers and other wireless communication devices to ensure signal stability and distortion-free.

• Quick Connect and Disconnect Design

The MCX connector adopts a snap on connection design. It allows tool-less assembly and disassembly. Greatly simplifying the testing and maintenance process. Ideal for test instruments, module test lines, and temporary connection equipment. It saves labor and time costs.

• Excellent Cable Compatibility

Compatible with a wide range of coaxial cables e.g. RG-178, RG-316, etc. The MCX connector can be matched and designed according to the needs of different applications. In consumer products or industrial equipment, the appropriate cable type can be selected based on the distance or degree of bending, providing high flexibility.

• Lightweight and Sturdy Structure

The MCX connector features a gold-plated or nickel-plated housing with excellent resistance to oxidation and corrosion. It keeps the connection stable even in harsh environments. It is very suitable for aerospace, military, outdoor surveillance and other demanding applications to ensure long-term reliability.

• Standardized Design, Global Compatibility

The MCX connector complies with the European CECC 22220 standard and is compatible with most commercially available equipment and modules. Make it easy for cross-platform use and maintenance replacement. It is highly versatile and easy to purchase for OEM equipment manufacturing, system integration, and parts replacement.

Applications of MCX Connector

• GPS Antenna and Navigation System

Due to its small size and high frequency, the MCX connector is quite suitable for connecting GPS receiver modules to antenna ports. For instance, GPS navigation systems for automobiles, handheld outdoor GPS and tachographs combined with GPS positioning function antenna connection.

• Wireless Data Communication Modules

In mobile communication and Internet of Things applications, MCX connector is often used as an interface between antenna and module to ensure stable transmission of high frequency signals. For instance, 4G/5G LTE modems, ZigBee, LoRa, NB-IoT and other low-power wireless modules as well as Wi-Fi, Bluetooth modules (industrial or consumer devices).

• Consumer Electronics Products

A variety of modern consumer electronics products are designed to be thin and lightweight. MCX Connector provides a stable connection without taking up much space. For example, digital TV receivers (e.g. USB TV Stick), cameras and wireless audio/video transmission modules, as well as wireless connection modules in smart home appliances (e.g. smart air conditioners, smart surveillance cameras).

• Aviation Aerospace Equipment

In the aerospace field, equipment needs to be lightweight and highly reliable. MCX connectors’ high frequency and shock-resistant characteristics are very suitable. For example, satellite navigation module (GNSS), RF module connection on UAVs and GPS communication module connection interface in flight data recorders (black boxes).

• Defense and Military Equipment

Military equipment requires strict requirements. MCX connector is often used in military applications due to its interference resistance and high frequency stability. For instance, high frequency module connection in communication encryption equipment, portable military radio communication systems & RF interference detectors, and internal connection of radar modules.

• Test and Measurement Instruments

MCX connector is also often used for temporary connection or small module testing in laboratory or manufacturing RF testing due to its fast plugging and unplugging characteristics. For instance, RF signal generator outputs, network analyzer module test ports, as well as signal bridging between RF test fixtures and equipment.

The following is a comparison table between MCX connector and common MMCX connector.
 

How to Choose a Quality MCX Connector Manufacturer?

When choosing a MCX connector manufacturer, you should consider everything from certification, electrical performance, durability, and technical support. Choosing a professional, experienced, and stable supplier is the key to ensuring the performance and longevity of your system. If you have further needs for MCX connector or other RF connectors, it is recommended to consult a professional vendor for the best solution.

• Confirm the Certification and Quality System

Choosing a manufacturer with international certifications, such as ISO 9001, RoHS, REACH, etc., means that their products meet the quality and environmental protection requirements. Also the manufacturing process is under strict control. Military, medical or aerospace fields need to pay more attention to whether it meets MIL-STD standards.

• Understanding Frequency and Electrical Performance Requirements

According to the actual application (e.g. GPS, 5G, Wi-Fi), choose the MCX connector with suitable frequency range. Generally, MCX connector can support up to 6 GHz.

• Check the Impedance Specification

Most MCX connectors are designed for 50Ω impedance, but it is important to check whether it matches with other components in the system to avoid standing wave loss or reflection.

• Consider Connection Frequency and Life Cycle

If the system requires frequent plugging and unplugging (e.g., test instruments, portable devices), we should choose MCX connectors with high resistance to plugging and unplugging (e.g., ≥500 times).

• Select High Quality Materials and Protective Design

MCX connector is usually made of brass or stainless steel with gold or nickel plating on the surface, and should be corrosion-resistant to ensure long-term stable connection.

• Evaluate the Reputation of Supplier and Delivery Time

Choose a supplier with long-term business experience, good customer reviews, and technical support capabilities. Confirm whether it can provide stable supply and fast delivery to avoid delays in system development or mass production.

• Whether to Provide Technical Support and After-Sales Service

Professional supplier should be able to assist you in interpreting specifications, providing impedance matching suggestions, analyzing problems & testing suggestions, and responding quickly to technical issues.

FAQs of MCX Connector

• How a High Frequency can the MCX Connector Withstand?

MCX connector can support frequency from DC to 6 GHz, and even up to 10 GHz for high quality versions. It is depended on the application requirements. For general GPS, Wi-Fi, LTE and other applications, 6 GHz is sufficient.

• What Kind of Devices or Applications are Suitable for the MCX Connector?

MCX connector is widely used in the following applications.

1. GPS modules and antennas
2. Wireless data transmission modules (e.g. LoRa, NB-IoT)
3. Consumer electronics (e.g., laptops, tablets, car loggers)
4. Aerospace and military equipment
5. Drone and industrial communication modules

• Does the MCX Connector Waterproof? Can it be Used Outdoors?

The standard MCX connector does not have a waterproof design. If you need to use it outdoors or in a humid environment, you should choose a waterproof version with a waterproof rating (e.g. IP67). You can either add a waterproof O-ring (rubber) or use a special package and make sure that the cable ends are protected accordingly.

• Are SMA and MCX Connectors Compatible?

SMA and MCX connector are connectors with different sizes. The connector configurations con not be directly connected to each other. However, they can be converted by means of an MCX to SMA adapter.

• How to Distinguish the Male and Female Connectors of MCX Connector?

1.  Male (Plug): The center PIN is designed to protrude and the housing is usually smaller.
2.  Female (Jack): The center of the connector is in the shape of a jack, and there is a groove for fixing the male connector.

• Will the MCX Connector Come Loose Due to the Snap-on Design?

MCX connector adopts snap on design, but still has good stability. If installed properly and using a high quality brand, there will be no loosening problems.

Conclusion

MCX connector has become a key component in modern wireless communication, test equipment and 5G technology due to its miniaturization, reliability and durability, and wide compatibility. With our own R&D capability & CST electrical simulation software, we are able to satisfy the special application needs of MCX connector customization. When choosing a supplier for MCX connector, we should consider the quality certification, price & performance ratio, supply stability, market evaluation, and so on. Huang Liang Technologies have a large number of CNC equipment to meet the high frequency precision tolerance requirement of MCX connectors. We provide fast delivery service as well. We have excellent customer evaluation. We can provide technical support and perfect after-sales service. Huang Liang Technologies is a professional RF microwave connector manufacturer, providing a wide range of high quality products and technical support. If you have further requirements, please feel free to contact us for more information.