N RF Connectors Guide: Types, Structure, and Uses Explained
What are N RF Connectors?
N-type RF connectors are robust, medium-sized coaxial connectors primarily designed for a 50 Ω impedance, providing reliable performance up to 12 GHz. Their key benefit lies in the threaded coupling mechanism, which ensures a secure, vibration-resistant, and often weatherproof connection.
This makes them ideal for use in durable applications such as radio communications, test equipment, and broadcast systems. Note that incompatible 75 Ω versions also exist.
Trivia: The Origin of N
The N connector, foundational in RF applications, was invented in the 1940s by Paul Neal at Bell Laboratories in the United States. Contrary to the common belief that it stands for 'Navy', the 'N' in its name actually comes directly from the first initial of its inventor, Neal.
This design was a significant advancement, being one of the earliest connectors capable of handling microwave frequencies effectively. Sometimes, to prevent mix-ups with the M connector type, it is colloquially known as the Nancy connector.
Trivia: UHF Band
UHF means Ultra High Frequency, covering radio waves between 300 MHz and 3 GHz. These waves generally travel line-of-sight. They penetrate obstacles better than higher frequencies but not as well as lower ones, offering a good balance for many uses. Common applications include television broadcasting (for example, 470–770 MHz), Radio Frequency Identification (RF-ID) systems used in tracking and logistics (often 860–960 MHz), mobile phones, Wi-Fi, GPS, Bluetooth, and business two-way radios.
Reliable connectors are essential to maintain signal quality for devices operating in the UHF band, ensuring dependable performance for critical business and communication systems. (Frequency examples based on general allocations).
N RF Connectors by Type
Semi-Flexible
Semi-Rigid
Trivia: Compatible Cable Types
- MIL-Standard Coaxial Cables
Compliant with US military standards for cables. Begins with the initials "RG" and is also called Mil-Spec.
- Semi-Flexible Coaxial Cables
With moderate flexibility, these cables can bend and hold their shape while offering strong shielding and low signal loss, making them ideal for precise routing in telecommunications, test equipment, and internal electronics.
- Semi-Rigid Coaxial Cables
Made from a seamless metal tube, these cables provide superior shielding and minimal signal loss. Their rigid design ensures stable performance in critical applications like military systems, high-frequency instruments, aerospace, and microwave assemblies.
N RF Connector Features
Large Size
N connectors are relatively large compared to other coaxial connectors, allowing for secure connections with thick coaxial cables. Their size makes them ideal for high-power applications. With strong weather resistance, they are commonly used in outdoor environments, such as mobile base stations, where reliable, durable connections are crucial.
Trivia: Coaxial Cable Thickness
The thickness of coaxial cables affects their flexibility and performance. Thicker cables are less flexible but offer improved performance, including lower noise and reduced signal loss. For longer cable runs, thicker cables are preferred, as they maintain signal integrity better than thinner cables, especially in demanding environments.
High Frequency
N connectors are suitable for high-frequency applications, with product options designed for use in frequency ranges from DC to 12 GHz. This broad frequency range makes them ideal for various communications and RF applications, ensuring reliable signal transmission across a broad spectrum of frequencies.
Impedance
N connectors come in two impedance variations: 50 Ω and 75 Ω. These two types are not interchangeable, as each is designed for different applications. It’s essential to match the correct impedance type to the system's requirements to ensure optimal signal transmission and minimize performance issues, such as reflection and signal loss.
N RF Connector Applications
N RF connectors are widely used in mobile communication base stations, disaster prevention radios, police radios, tunnel communication systems, and broadcast repeaters. These connectors are designed to ensure reliable signal transmission for both professional and industrial applications in challenging environments.
N RF Connector: Standards & Technical Specifications
Equivalent Standards (Compatible Standards)
Complies with military standard MIL-C-39012 and JIS C 5411.
Nominal Impedance
Impedance rating is 50 Ω, indicating compatibility with most standard RF equipment.
Coupling Method (Connector Interface)
Connectors securely join using threaded coupling (5/8-24UNEF-2A, 2B) for stable signal transmission.
Voltage Rating
Rated for standard operating voltage of up to AC 500 volts.
Maximum Withstanding Voltage
Safely withstands up to AC 1,000 volts for one minute without electrical breakdown.
Insulation Resistance
Minimum insulation resistance of 1,000 megohms when tested with DC 500 volts, ensuring electrical safety.
Contact Resistance
Maximum contact resistance of 3 milliohms when conducting DC current of 1 amp, ensuring efficient connection.
Frequency Range
Suitable for signals within frequency range from 0 to 10,000 MHz.
Voltage Standing Wave Ratio (V.S.W.R.)
Maintains optimal signal quality with a maximum V.S.W.R. of 1.2 within the frequency range of 0–4,000 MHz.
Materials
Constructed from durable brass for long-lasting use in demanding environments.
Surface Treatment
Features nickel plating, ternary plating, and silver plating for corrosion resistance.
Wiring Method
Supports soldering, crimping, and clamping methods for flexible installation options.
Note: The figures provided are typical values. For further details, please contact us.
N RF Connector FAQs
QCan 50 Ω and 75 Ω types be combined?
QCan 50 Ω and 75 Ω types be combined?
No. Although 50 Ω N connectors are available for 75 Ω cables, they cannot be used together with 75 Ω N connectors.
> N75Ω
QIs there a way to reduce the cost of a cable assembly?
QIs there a way to reduce the cost of a cable assembly?
You can opt for connectors with crimp-type cable attachments. These are lighter and more affordable than clamping-type connectors, though crimping tools are required for assembly.
QDo you offer products with stronger cable-connector connections?
QDo you offer products with stronger cable-connector connections?
Yes, clamping-type connectors provide a stronger connection than crimp types. The "Z" series uses a triple chuck method for a secure connection, while the "X" series is soldered for added strength.
QAre there any products that allow easy insertion and removal of connectors without screws?
QAre there any products that allow easy insertion and removal of connectors without screws?
Quick adaptors allow easy push-pull connection and disconnection without screws. To use them efficiently, insert and remove them straight, not at an angle.
QWhat is a flare tool?
QWhat is a flare tool?
A flaring tool widens the outer sheath of a cable to aid connector installation. It’s not needed for standard coaxial cables but is essential for harder EM cables, which require spreading before connection.
QDo you offer waterproof connectors?
QDo you offer waterproof connectors?
Yes, we offer N-type waterproof connectors. The IP rating varies by product, with options including waterproofing for the mating part, cable attachment, and O-ring seals for panel mounting.
QHow do I choose the right N connector for my application?
QHow do I choose the right N connector for my application?
To select the correct N connector, consider the impedance, frequency, and environmental conditions of your application. Our team can assist with tailored recommendations.
QCan I use N connectors with other cable types?
QCan I use N connectors with other cable types?
N connectors are designed for use with coaxial cables. Ensure the cable's impedance matches the connector type (e.g., 50 Ω or 75 Ω) for optimal performance.
QAre there any special handling instructions for N connectors?
QAre there any special handling instructions for N connectors?
N connectors should be handled carefully to avoid damage to the cable or connector threads. Ensure the connectors are securely tightened to prevent signal loss.
QWhat tools do I need for installing N connectors?
QWhat tools do I need for installing N connectors?
Installation of N connectors typically requires specific tools depending on the connector type you choose. These can include crimping tools, clamping tools, or a soldering iron.
QHow can I order N RF connectors, and what support do you offer?
QHow can I order N RF connectors, and what support do you offer?
Ordering is simple—you can purchase our N RF connectors directly on our website or contact our sales team for assistance. We also provide full technical support, including datasheets, CAD models, and application notes, to help you pick the perfect connector for your project.
Purchase Guide
Tyclon coaxial connectors and processed coaxial cable products can be purchased directly online using a variety of credit cards.
Catalog
N RF Connector Catalog
Registration is required only for first-time users.