WIRE CONNECTOR

Wire Connector

Wire Connectors are used to fasten two or more electrical conductors together. Twist-on wire connectors are also known as a cone or thimble connectors. Marrette or Marr connector are two other trade names for such connectors.

Wire connectors are available in a variety of sizes and shapes and are typically made from plastic, with a tapered, conducting metal coiled insert that threads onto the wires to hold the wires secure. Cheaper varieties often didn't include the metal coil, relying instead on molded plastic threads.

The wires to be joined are first twisted firmly together and the wire connector is then twisted onto the wires clockwise, usually finger-tight, to form a permanent electrical connection.

Wire connectors are commonly colour-coded to indicate the nut's size (and hence, its wire capacity). They are commonly used as an alternative to terminal blocks or soldering conductors together because they are cleaner, faster, and allow subsequent removal for future rework.

In the past, wire connectors were occasionally made of ceramic with molded threads and no internal metal coil. In many areas, this style of wire connector is no longer approved by the regulatory authorities for ordinary use, however, they may still be required in certain specific high temperature conditions.

Coaxial Connector

Coaxial Connector or Coax Connector is an electrical cable consisting of a round conducting wire, surrounded by an insulating spacer, surrounded by a cylindrical conducting sheath, usually surrounded by a final insulating layer. It is used as a high-frequency transmission line to carry a high-frequency or broadband signal. Sometimes DC power (called bias) is added to the signal to supply the equipment at the other end, as in direct broadcast satellite receivers. Because the electromagnetic field carrying the signal exists only in the space between the inner and outer conductors, it cannot interfere with or suffer interference from external electromagnetic fields.

Coaxial Connector may be rigid or flexible. Rigid types have a solid sheath, while flexible types have a braided sheath, both usually of thin copper wire. The inner insulator, also called the dielectric. The dielectric may be solid or perforated with air spaces. Connections to the ends of coaxial cables are usually made with RF connectors.

From the signal point of view, a connector can be viewed as a short, rigid cable. The connector usually has the same impedance as the related cable and probably has a similar cutoff frequency although its dielectric may be different. High-quality connectors are usually gold or rhodium plated, with lower-quality connectors using nickel or tin plating. Silver is occasionally used in some high-end connectors due to its excellent conductivity, but it usually requires extra plating of another metal since silver readily oxidizes in the presence of air.

One increasing development has been the wider adoption of micro-miniature coaxial connector in the consumer electronics sector in recent years.

An RF coaxial connector is an electrical connector designed to work at radio frequencies in the multi-megahertz range. RF connectors are typically used with coaxial cables and are designed to maintain the shielding that the coaxial design offers.

SMA Connector

SMA (SubMiniature version A), are coaxial RF connectors developed in the 1960's as a minimal connector interface for coaxial cable with a screw type coupling mechanism. The connector has a 50 O impedance. It offers excellent electrical performance from DC to 18 GHz. The SMA connector is frequently used in mass numbers in particle accelerators. The connector is used in conjunction with Heliax cable as a connector for X and Y in Particle beam diagnostics, after Quadrupole magnets. The AC feedback signal, X and Y are fed through four SMA connectors from the beam position monitor to the beam monitor instrumentation.

Reverse polarity SMA (RP-SMA or RSMA), is proprietary variation of the SMA connector. The male RP-SMA connector has the same external housing as a standard male SMA connector; however, the internal prong is replaced by a receptacle. The female RP-SMA connector has the same housing as a standard female SMA connector however the prong found on a male SMA connector is on the female RP-SMA connector.

SMB connector (SubMiniature version B), are coaxial RF connectors developed in the 1960s. This version is smaller than SMA connectors.

They feature a snap-on coupling and are available either in 50 O or 75 O impedances. They offer excellent electrical performance from DC to 4 GHz.

SMC connector (SubMiniature version C), are coaxial RF connectors developed in the 1960s. They use a 10-32 threaded interface (screw type) and are available in 50 O or 75 O impedances. They offer excellent electrical performance from DC to 10 GHz.

Connector Manufacturer

There are many manufacturer of connectors. They are:-

1- A-Point Technology Co

2- AB Connectors

3- Advanced-Connectek Inc (ACON)

4- Advanced Interconnections Corp.

5- Amphenol Interconnect Division, Amphenol Sine Systems, Amphenol TCS, Amphenol RF Asia Corp, Anderson Power Products, Andon Electronics Corp., Andrew Corporation.

6- Binder Connector Group, Binder-USA

7- B&L Coaxial Connections Ltd.

8- Cambridge Connectors, Cambridge Electronic Industries Ltd.

9- Cypress Industries

10- EDAC Connectors, Elco Corporation, Elcon Products International

11- Electronic Connector Service Inc., Electronic Precision Technology

12- Filcon Electronic GmbH

13- Fujitsu, Fujitsu Components America, Inc., Fujitsu Components Europe

14- Galaxy Technology Co

15- Hitachi America Ltd.

16- Honda Connectors Inc.

17- IMS Connector Systems

18- Raycon Technology, Inc.