Introduction & quality judgment of Bnc Plug

The bnc plug is a coax connector! China Custom production of bnc plug cables.
BNC plug, also known as Q9 head, is a standard coaxial cable connector, generally used in video surveillance engineering and network engineering. For anti-interference connection from device to cable or from cable to device.

male / female Bnc connector Plug

Introduction of bnc plug

The characteristic impedance of the BNC head used for video surveillance is 75 ohms, and the characteristic impedance of the BNC head used for network cables is 50 ohms. At present, the use of network cables has been increasingly replaced by twisted pairs and optical fibers, so most of the BNC connectors are used in the field of video surveillance.
Both ends of the coaxial cable are connected to the T-shaped BNC head through the BNC connector, and connected to the network card through the T-shaped BNC head. When networking with coaxial cables, BNC connectors must be made at both ends of the coaxial cables.
BNC connectors include: BNC-T type head, used to connect the computer network card and the cable in the network;
BNC barrel connector for connecting two thin cables into one longer cable;
BNC cable connector for soldering or screwing on the end of the cable;
The BNC terminator is used to prevent the signal from being reflected back after reaching the cable break and causing interference. A terminator is a special connector that contains a resistor carefully selected to match the characteristics of the network cable. Each terminator must be grounded.

rg59 Bnc connector

Classification of bnc plugs
The soldering type, as the name implies, is fixed with a soldering iron and solder. This is the most common form used in China at present; welding can be divided into British and American according to its appearance. According to the material, it can be divided into core, zinc alloy and copper.
There are two types of welding-free: one is to tighten with screws, that is, the middle axis wiring has a screw for quick connection. The disadvantage is that it is easy to oxidize and have poor contact, and the advantage is that the requirements for cables are not high. The specifications of domestic cables are relatively uneven, so domestic solder-free products are also commonly used. The other three have relatively high requirements for cables, and are generally used abroad, namely direct screw type, cold press type, and extrusion type.
Straight screw type does not require crimping tools. After stripping the coaxial cable according to a certain length, it can be fixed and in good contact by rotating it clockwise. The advantage is that it is easy to install and use, and the disadvantage is that the cables require specifications and standards.
The cold press type is crimped by special cold press pliers, which is similar to crimping crystal heads. The advantage of this connection method is that it has a good contact effect, is convenient and fast, is the fastest method for mass connection, and is also relatively reliable and durable. The disadvantage is that the specifications and standards are required for the cables.
The extrusion type is a crimping method recently introduced from abroad. Its crimping effect is similar to that of the direct screwing type, but its waterproofness and back tension are stronger, and it is more suitable for use in harsh environments.

insulated Bnc connector Plug

General characteristics of BNC plugs:
Technical characteristics of the bnc plug
Characteristic Impedance: 75Ω Center Contact:
Frequency range: 0~2GHz Pins – brass, gold-plated; bold
Contact Resistance: Jack – Tin Bronze or Beryllium Copper, Gold
Inner conductor ≤2.0mΩ? Shell and other metal parts: brass, nickel-plated; thickened outer resistance ≤0.2mΩ Insulator: PTFE
Insulation resistance: ≥5000MΩ Wire clamp: brass, silver plated
Dielectric withstand voltage: 1500V Sealing ring: Silicone rubber
VSWR: ≤1.3
Connector durability: 500 times

triaxial Bnc connector Plug

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