N type connector in RF coaxial connector

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N type connector in RF coaxial connector 

Product model: N type connector

Product parameters: N series is the first connector with real microwave performance.

Developed N series connectors to meet the needs of RF connectors with long-lasting, weather-resistant mid-size and continuous performance up to 11GHz.

 

There are two types of N series connectors:

Standard N series (coaxial cable)

Spiral N series (corrugated cable)

The basic application is the termination of medium to mini size coaxial cables: RG-8 and RG-225; RG-58 and RG-141.

n type connector,n type cable,n type connector assembly

n type connector,n type cable,n type connector assembly

N type connector Features/Advantages:

  1. Provide a wide range of medium to micro size RG coaxial cables with red iron powder medium design. Provide customers with flexible design and manufacture durable connectors.

 

  1. Supply military (M39012 prefix), industrial (UG prefix) and commercial grade (RFX suffix) products.

 

  1. Supply a variety of types: sockets (straight and curved), plugs (panel mounting, waterproof wall mounting, sockets). Meet the practical needs of our customers。

Classification of N-type connectors

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The N-type connector is a small and medium power connector with a threaded connection mechanism. It is suitable for connecting radio frequency cables or microstrip lines in radio frequency loops of microwave equipment and digital communication systems. It can be interchanged with similar international NG products. It has the characteristics of wide frequency bandwidth, excellent performance, high reliability and long life.

 

N-type connectors are divided into 50 ohm impedance and 75 ohm impedance. The 50-ohm N-type connector has a high-reliability coaxial connector with a frequency of up to 12 GHz and a screw locking system. These two kinds of connectors cannot be connected to each other. The N-type connector adopts a medium-sized screw locking system and has high weather resistance. In addition, the N-type connector also has the advantages of high robustness and high reliability, as well as excellent intermodulation performance.

n type connector，n type cable，n connector female

n type connector，n type cable，n connector female

50 ohm straight N type connector

N-type connectors are used as terminals to connect with coaxial cables, printed circuit boards (PCBs) or terminal blocks. Manufacturers all manufacture them in accordance with the technical requirements of precision radio frequency and microwave industries.

 

50 ohm N type right angle connector

The structure of the N-type connector is divided into male or female, and the style has standard polarity or reverse polarity. The shape of the N-type connector is divided into straight or right-angle type, 4-hole flange type, press-in type, partition type, 2-hole panel type, 4-hole panel type or free-installation type. The termination methods of these N-type connectors are clamp/weld, clamp/weld (static contact), crimp/weld, field replaceable, welding or welding/welding. The N-type connectors we provide are divided into standard performance or high performance grades, and the body material is brass or stainless steel.

 

50 ohm reverse polarity N type plug and 50 ohm reverse polarity N type socket

Standards for the use of N-type connectors in countries around the world (Part 3)

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Standards for the use of N-type connectors in countries around the world (Part 3)

 

International Electrotechnical Commission, standards for n-type connectors

 

IEC 61169-16-2006 Radio frequency connectors. Part 16: Section specification. Threaded radio frequency coaxial connectors with outer conductor inner diameter of 7mm (0.276in). Type N: characteristic impedance 50Ω and 75Ω

 

IEC 60169-16-1982 Radio Frequency Connectors Part 16: Threaded RF Coaxial Connectors with an outer conductor inner diameter of 7mm (0.276 in) Characteristic impedance 50Ω (75Ω) (Type N)

 

National Military Standards-General Armament Department, standards for n-type connectors

 

GJB 976/1-2013 N-50KFD type radio frequency coaxial microstrip connector detailed specification

 

GJB 680/3A-2011 N series internal level 2 RF coaxial connector adapter detailed specification

 

American Society of Motor Vehicle Engineers, standards for n-type connectors

 

SAE AS 31461A-2011 3 series (N grade) push-pull coupling brazing fixed crimping sealed electrical socket connector, The standard for n-type connectors

 

The United States Defense Logistics Agency, the standard for n-type connectors

 

DLA DSCC-DWG-01007 REV A-2008 Right Angle N Series Radio Frequency Electrical Plug Connector for Low Smoke Cable

 

DLA DSCC-DWG-01006 REV A-2008 Lock Nut N Series Radio Frequency Electrical Socket Connector for Low Smoke Cable

 

DLA MIL-PRF-39012/2 H (1)-2008 radio frequency coaxial electrical socket and plug connector (N series (cable), flange type, socket contact, level 2)

 

n type connector，n type cable，n connector female

n type connector，n type cable，n connector female

DLA MIL-DTL-5815/1 A VALID NOTICE 1-2008 Blade UHF antenna, AT-256A/ARC (N series connector)

 

DLA DSCC-DWG-01027-2001 Suitable for low smoke cables, 75 ohm N series, RF capacitor connector

 

DLA DSCC-DWG-01028-2001 Suitable for low smoke cables, 75 ohm right angle, N series radio frequency electrical plug connector

 

DLA DSCC-DWG-86106 REV D-2001 N-type semi-rigid RF coaxial cable capacitor connector

 

DLA MS3149 (1)-2000 (Class N) Ⅲ series push-pull coupling wall flange single-hole installation welding type electrical socket connector

 

DLA MS3146 (1)-2000 (N level) Ⅲ series push-pull coupling wall flange mounting airtight welded electrical socket connector

 

DLA MS3149 NOTICE 1-1999 (Class N) Ⅲ series push-pull coupling wall flange single-hole installation welding type electrical socket connector

 

DLA MS3146 NOTICE 1-1999 (Class N) Ⅲ series push-pull coupling wall flange mounting airtight welded electrical socket connector

 

DLA MS3149-1972 (Class N) Ⅲ series push-pull coupling wall flange single-hole installation welding type electrical socket connector

 

DLA MS3146-1972 (Class N) Ⅲ series push-pull coupling wall flange mounting airtight welded electrical socket connector

n type connector，n type cable，n connector female

n type connector，n type cable，n connector female

 

German Institute for Standardization, standards for n-type connectors

 

DIN EN 61169-16-2007 Radio frequency connectors. Part 16: Sectional specification. Radio frequency coaxial connectors with a spiral coupling outer conductor with an inner diameter of 7 mm (0.276 in). Characteristic impedance 50 Ω (75 Ω) (Type N)

 

DIN EN 4652-320-2018 Aerospace series. Coaxial RF connectors. Part 320: 3, N-type interface. Crimp version. Straight plug.

 

Product standard; German and English version EN 4652-320:2017

 

European standards for electrical and electronic components, standards for n-type connectors

 

CECC 22 211- 807 ISSUE 1-1988 radio frequency coaxial connector. N series (English, French, German)

 

CECC 22 211- 813 ISSUE 1-1988 Radio frequency coaxial connector. N series (English, French, German)

Standards for the use of N-type connectors in countries around the world (Part 2)

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Standards for the use of N-type connectors in countries around the world (Part 2)

 

Industry Standard-Electronics, Standards for n-type connectors

 

SJ 50681/1A-2016 N series RF coaxial connector detailed specification

 

SJ 50681/70-1994 N series (connected with 41.28mm semi-rigid cable) jack contact, level 2 radio frequency coaxial plug connector detailed specification

 

SJ 50681/68-1994 N series (connected with 22.23mm semi-rigid cable) pin contact level 2 radio frequency coaxial plug connector detailed specification

 

SJ 50681/72-1994 N series (connecting semi-rigid cable) pin contact level 2 radio frequency coaxial plug connector detailed specification

 

SJ 50681/74-1994 N series (connected to semi-rigid cable) jack contacts level 2 radio frequency coaxial plug connector detailed specification

 

SJ 50681/1-1994 N series (cable connection) pin contact level 2 radio frequency coaxial plug connector detailed specification

 

SJ 50681/4-1994 N series (not connected to the cable) jack contact lock nut and flange mounting level 2 RF coaxial socket connector detailed specification

 

SJ 50681/75-1994 N series (semi-rigid cable) jack contact lock nut installation level 2 RF coaxial socket connector detailed specification

 

SJ 50681/73-1994 N series (connected to semi-rigid cable) pin contact right angle level 2 radio frequency coaxial plug connector detail specification

 

SJ 50681/3-1994 N series (cable) jack contact lock nut installation level 2 radio frequency coaxial socket connector detailed specification

 

SJ 50681/67-1994 N series (connecting 12.70mm semi-rigid cable) socket contact piece 2nd level radio frequency coaxial plug connector detailed specification

 

SJ 50681/66-1994 N series (connected with 12.70mm semi-rigid cable) pin contact level 2 radio frequency coaxial plug connector detailed specification

 

SJ 50681/5-1994 N series (cable) pin contact right angle level 2 radio frequency coaxial plug connector detailed specification

 

SJ 50681/2-1994 N series (cable) jack contact flange mounting level 2 radio frequency coaxial plug and socket connector detailed specification

 

SJ/T 9562.1-1993 N-type radio frequency coaxial connector quality grading standard

 

SJ/T 10396-1993 N/F22 RF coaxial connector adapter

 

SJ/T 10397-1993 N/F40 RF coaxial connector adapter

 

SJ/T 10398-1993 N/F80 RF coaxial connector adapter

 

SJ/T 11071-1996 N type radio frequency coaxial connector

n type connector，n type cable，n connector female

n type connector，n type cable，n connector female

 

European Committee for Standardization, standards for n-type connectors

 

EN 4652-312-2015 Aerospace series. Radio frequency coaxial connectors. Part 312: Type 3, N connector. Fastening nut assembly version. Square flange socket. Product standard

 

EN 4652-313-2015 Aerospace series. Radio frequency coaxial connectors. Part 313: Type 3, N connector. Fastening nut assembly version. Bulkhead plug. Product standard

 

EN 4652-313-2015 Aerospace series. Radio frequency coaxial connectors. Part 313: Type 3, N connector. Fastening nut assembly version. Bulkhead plug. Product standard

 

EN 4652-311-2015 Aerospace series. Radio frequency coaxial connectors. Part 311: Type 3, N connector. Fastening nut assembly version. Right angle plug. Product standard

 

EN 4652-312-2015 Aerospace series. Radio frequency coaxial connectors. Part 312: Type 3, N connector. Fastening nut assembly version. Square flange socket. Product standard

 

EN 4652-311-2015 Aerospace series. Radio frequency coaxial connectors. Part 311: Type 3, N connector. Fastening nut assembly version. Right angle plug. Product standard

 

EN 4652-310-2015 Aerospace series. Radio frequency coaxial connectors. Part 310: Type 3, N connector. Fastening nut assembly version. Straight plug. Product standard;

 

EN 4652-310-2015 Aerospace series. Radio frequency coaxial connectors. Part 310: Type 3, N connector. Fastening nut assembly version. Straight plug. Product standard;

Standards for the use of N-type connectors in countries all over the world (Part 1)

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Standards for the use of N-type connectors in countries all over the world (Part 1)

In the International Standard Classification, n-type connectors involve parts and accessories for telecommunications equipment, electrical equipment for special working conditions, electrical equipment and systems for aerospace, optical fiber communications, electrical devices, electromechanical components for electronic and telecommunications equipment, and road vehicle installations.

 

In the Chinese standard classification, n-type connectors involve connectors, explosion-proof electrical appliances, structural parts for electrical devices, electronic components, optical communication equipment, electrical equipment and lamps, and metal casting and forging materials for aviation and aerospace.

 

General Administration of Quality Supervision, Inspection and Quarantine, standards for n-type connectors

 

GB/T 11313.16-2015 Radio frequency connectors Part 16: Sectional specification for radio frequency coaxial connectors (N type) with an outer conductor inner diameter of 7mm (0.276in), a characteristic impedance of 50Ω (75Ω), and threaded connection

 

British Standards Institution, standards for n-type connectors

 

BS EN 4652-321-2017 Aerospace series. Coaxial RF connector. Type 3. N connector. Crimp component version. Right angle plug. Product specifications

 

BS EN 4652-312-2015 Aerospace series. RF coaxial connector. Type 3, N connector. Fastening nut assembly version. Square flange socket. Product standard

 

BS EN 4652-313-2015 Aerospace series. RF coaxial connector. Type 3, N connector. Fastening nut assembly version. Bulkhead socket. Product standard

 

BS EN 4652-311-2015 Aerospace series. RF coaxial connector. Type 3, N connector. Fastening nut assembly version. Right-angle plug. Product standard

n type connector，n type cable，n connector female

n type connector，n type cable，n connector female

 

BS EN 4652-310-2015 Aerospace series. RF coaxial connector. Type 3 N connector. Clamping nut assembly version. Straight plug. Product standard

 

BS EN 4652-310-2015 Aerospace series. RF coaxial connector. Type 3 N connector. Clamping nut assembly version. Straight plug. Product standard

 

BS EN 61169-16-2007 RF connectors. Sectional specification. Threaded radio frequency coaxial connectors with inner diameter of outer conductor 7 mm (0.276 in). Characteristic impedance 50 Ω (75 Ω) (Type N)

 

BS QC 222100-1997 RF connector. The inner diameter of the outer conductor is 7mm (0.276in), and the characteristic impedance of the threaded connection is 50Ω, 75Ω RF coaxial connector (N type)

 

French Association for Standardization, standards for n-type connectors

 

NF L54-300-311-2016 Aerospace series. RF coaxial connectors. Part 311: Type 3 N connector. Clamping nut assembly version. Right angle plug. Product standard

 

NF L54-300-313-2016 Aerospace series. RF coaxial connectors. Part 313: Type 3 N connector. Clamping nut assembly version. Bulk wall socket. Product standard

 

NF L54-300-312-2016 Aerospace series. RF coaxial connectors. Part 312: Type 3 N connector. Clamping nut assembly version. Square flange socket. Product standard

 

NF L54-300-310-2015 Aerospace series. RF coaxial connectors. Part 310: Type 3, N connector. Fastening nut assembly version. Straight plug. Product standard

Various performance indexes of N-type connector

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N-type radio frequency coaxial connector, including inner conductor, insulator, compression sleeve, shell, outer conductor, the inner conductor is an integrated right-angle bent structure, and its tail is plugged and connected with an elastic jack, and the insulator is nested in the inner conductor At the groove and the right-angle bend, the insulator at the inner conductor groove is made of polytetrafluoroethylene and has an annular groove, and the inner conductor at the right-angle bend is filled with air.

 

The pressure sleeve of the N-type connector is wrapped around the insulator and the inner conductor, the outer conductor is nested outside the inner conductor and the pressure sleeve, and the outer shell is a right-angle bent taper structure, which is fixed on the outside of the outer conductor.

 

The inner conductor of the N-type connector adopts an integrated right-angle bent structure and the outer shell adopts a right-angle bent taper structure design, which not only greatly improves the consistency of the main electrical performance of the N-type connector, but also achieves a continuous and smooth transition of impedance at a right-angle turn , Reduce the reflection coefficient, improve the effect of the cut-off frequency at sharp corners.

 

Working performance of N-type connector

Standards: MIL-C-39012, IEC169-16, CECC22210

Features: Threaded structure

Temperature range: -65~+165℃(PE Cable)

Durability: 500 times

PLLG diameter/JACK diameter: 16mm/8.5mm

n type cable,n type connector assembly,n cable connector,n type connector cable

n type cable,n type connector assembly,n cable connector,n type connector cable

 

Electrical performance of N-type connector:

Characteristic impedance: 50 ohm and 75 ohm

Working voltage: 1000vrms

Frequency range: 0-11GHz

Medium withstand voltage: 1500v

Contact resistance: conductor<1m0hm, outer conductor<0.2mOhm

Insulation resistance: >5000 megohm

VSWR: <1.30

 

N-type connector material:

Shell: brass nickel plated

Pin: Brass with hard gold plated

Jack: beryllium bronze plated with hard gold or tin bronze plated with gold

Insulator: PTFE

Seal: Silicone rubber

Crimp kit: copper alloy nickel plated

what is an n type connector?

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N Type  connector is a connector for coaxial cables. It has a threaded connection structure and can be rotated and locked. It is one of the first connectors that can be used to transmit microwave frequency signals, and was invented by Paul Neill of Bell Laboratories in the 1940s and named after Neill’s initials. The signal frequency range supported by the N-type connector is 0 to 11GHz, and the enhanced type can reach 18GHz. There are two types of characteristic impedance, 50 ohms and 75 ohms.

N-type connector

N-type connector

N-type connectors have the characteristics of high reliability, strong vibration resistance, excellent mechanical and electrical performance, etc., and are widely used in radio equipment and instruments under vibration and harsh environmental conditions, as well as ground transmission systems to connect radio frequency coaxial cables.

 

Among them, 50-ohm N-type connectors are widely used in mobile communications, wireless data, paging systems, etc. 75-ohm N-type connectors are mainly used in cable TV systems, and 75-ohm N-type connectors have a smaller inner conductor diameter. The connector is not compatible.

Frequently Asked Questions of BNC Connectors (Part 2)

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  1. There are pointed and round BNC connectors on the market, which one is better?

According to the MIL-C-39012 standard, the angle of the bevel of the pin end is allowed to be between 55 degrees and 65 degrees. The round head process is based on the round head can be inserted at different angles to expand the contact area. It is not easy to contact The contact surface is small and the spark effect is improved; this can’t tell which is better. The judgment of Z is to remove a pin and cut it from the middle. See the material Z inside to explain the problem;

  1. What are the main parts of the BNC connector Z?

A BNC connector is composed of 11 parts in total, each part has its irreplaceability, and Z mainly affects the contact resistance and corrosion resistance of the BNC connector used; generally, the inner conductor is required to be 1.5mΩ outside The resistance is 1mΩ; the corrosion performance depends on the quality of the coating and the material used; if the material is poor, it is easy to jump off.

BNC Connector cable

BNC Connector cable

  1. The pin of the BNC connector is often loose. What causes it?

The main reason for the loosening of the pins of the BNC connector is that the insulating material used may not be PTFE and the pins are straight; the melting point of the general solder is between 183℃ and 231℃, and the PTFE material It has good heat resistance and can be used for a long time at a high temperature of 260℃ and a short-term use at a low temperature of -268℃. When heated to 415°C, it decomposes slowly, and generally soldering will not cause the pins to loosen.

There is also a good BNC connector that is designed with a resistance ring in the middle of the pin to prevent the pin from sliding back and forth. This needs to be disassembled before you can see it. A simple method is to use a soldering iron to solder the pin for a long time. , If the glue loosens easily, it means that the temperature resistance is not enough.

  1. Some of the shielding rings of BNC connectors are glued, some are not, some are four-open, and some are six-open. What is the difference between them?

The shielding ring of the BNC connector with glue and quartet products are mainly seen in low-priced products. The glue is to ensure the toughness of the interface and reduce the amount of metal used. The quartet is because of the alloy material used. The material is relatively brittle. Generally, alloys and copper connectors with better materials use a six-way structure without rubber pads, so six-way connectors are better when buying a BNC connector.

Frequently Asked Questions of BNC Connectors (Part 1)

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BNC connector is a very common RF terminal coaxial cable terminator. The BNC connector consists of a ZX pin, a jacket and a card seat. BNC connectors are used for the transmission of radio frequency signals, including the transmission of analog or digital video signals, the connection of amateur radio equipment antennas, the connection of avionics and other electronic test equipment.

  1. What faults may be caused by the poor quality of the BNC connector?

The poor quality of BNC connectors is generally caused by poor contact and easy oxidation, which may lead to no video, video skipping, image streaks or unclear images, dark and color cast, etc., and the welding is not firm (virtual welding) The above phenomenon will also occur under the circumstances.

bnc connector cable

bnc connector cable

  1. Why does the purchased BNC connector fail to be welded or the welding is not strong?

The soldering failure of the BNC connector may be due to poor soldering iron and soldering tin, or the pins and clamps of the BNC connector are made of copper and iron. So if the above situation occurs, please pay attention to whether the solder wire purchased is low-temperature solder and the power of the electric soldering iron is enough for the temperature, and also pay attention to whether the material of the BNC connector is copper or iron. The iron material must be black if the surface is black. It must be difficult to solder.

  1. Why does the BNC connector appear to be charged in actual applications?

BNC connectors are generally used in a weak current environment to pass the resistance test and withstand voltage test. If this phenomenon occurs, it may be caused by static electricity, and the relevant equipment must be grounded. Most of this problem is not the problem of the BNC connector itself, but the grounding problem of the strong electric circuit in the environment where the equipment is used. There is an insulating layer on the wire, so no electricity is felt, but the BNC connector is metal, so it feels electrified.

How to choose a good bnc connector

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BNC connector as an important component of equipment and equipment BNC connector, whether it is made of copper or zinc alloy, has a similar appearance. It is used in monitoring projects. A 16-in 32-out distributor has 48 BNC female sockets. A large matrix has hundreds of BNC female sockets, and a larger monitoring project uses thousands of BNC connectors. 1% of defective products will cause more than ten failures. Large projects use poor quality BNC connectors. After-sales service will be very troublesome. Its quality directly affects the effect of the project, but it is easy to be overlooked. BNC connector failures are usually good and bad. Common failures that appear in monitoring projects are sometimes images and sometimes no images, or Unidentified image interference, image quality degradation, etc., and even some strange faults or problems occur after a period of time, occupying a lot of time for engineering personnel to troubleshoot faults.

BNC radio frequency connector is the data transmission interface of many multimedia products, and it is widely used.

With the increasingly fierce competition in the industry, various choices of bnc connector materials have appeared. Generally, a good bnc connector requires good conductivity in terms of metal material. Copper is the most conductive metal. However, because the price of copper itself is relatively high, the use of pure copper is relatively rare now.

BNC connector cable

BNC connector cable

In addition, copper itself is easily oxidized, which is not conducive to contact transmission, so it is necessary to coat the surface with oxidation-resistant metals, such as zinc, silver, tin, etc.

The best bnc connector on the market now is that the metal is made of pure copper galvanized or silver, with good PVC plastic parts, so that the entire BNC connector can achieve a good conductive part.

When the BNC male connector is in contact with the BNC female connector, the BNC connector male connector is in contact with the outer layer of the female connector through the second layer of the male connector, so the second layer of the high-quality BNC male connector is copper, high-quality The outer layer of the female header is copper.

Because the characteristics of copper and zinc alloys are different, the production process is also different. Although the appearance of the finished product is similar, the processing technology is different and easy to identify. Copper is easier to process and can be finely processed with a CNC lathe. Zinc alloy is not. The copper BNC female seat is automatic There are no traces of processing on the lathe, but no traces of the zinc alloy

Generally, it is difficult to identify its quality without certain skills. The BNC male connector is generally easy to purchase by the engineering company. The female connector is generally installed on the equipment and is often easily overlooked.

BNC connector quality:

  1. From the surface of the product, the BNC connector should be bright and delicate. The higher the purity of the copper, the brighter it is. Some products are bright on the outside, but they are made of iron.
  2. In the adsorption test of iron absorption stone, in general, only the bayonet spring and tail spring are made of iron material; the wire clamp, pin and sleeve are made of copper, and the other parts are made of zinc alloy
  3. Scrape the surface coating to see the material: use a sharp tool such as a blade to scrape the surface coating to see the material intuitively, and compare the product material intuitively by scraping the coating of wire clips, pins, and shielding sleeves.
  4. In addition to the above methods, you can also prepare a good quality female head to try.