Joined in 2023 
82 
63 About this deal
Screw terminals, as individual connectors to a board at left, as a barrier strip with setscrews at top, and as a barrier strip with attached spade and loop lugs at bottom. Field Installable: The secret to mastering connectors". Design Spark. RS Components. 16 March 2017. Solder connectors . Retrieved 1 July 2019.
While wires may be crimped, they should not be heavily tinned with solder prior to installation in a screw terminal, since the soft metal will cold flow, resulting in a loose connection and possible fire hazard. [ citation needed] Screw connectors sometimes come loose if not done up tightly enough at fitting time. Verifying adequate tightening torque requires calibrated installation tools and proper training. In the UK, all screw connectors on fixed mains installations are required to be accessible for servicing, for this reason. [ citation needed] Advantages and disadvantages [ edit ] Two types of screw terminals showing a significant development in design. Basic, with the wires held between the screw heads and the terminals (left) and with the wires held, reversely, between the metal clamping plates and the rear of the terminals (right). Screw terminals are low in cost when compared to other types of connectors, and can be readily designed into products for circuits carrying currents of from a fraction of an ampere up to several hundred amperes at low to moderate frequencies. The terminals easily can be re-used in the field, allowing for the replacement of wires or equipment, generally with standard hand tools. Screw terminals usually avoid the requirement for a specialized mating connector to be applied to the ends of wires. Polarization - A USB connector can only nominally be inserted one way. It may be possible to force a connector in wrong, but that will result in damage to the device. There is one consistency however; all antennas, cables or anything was being attached to a potential stationary object used an outer nut or inner thread design and all stationary devices used the outer thread design. This applies for all SparkFun products. All of our antennas are either SMA male or RP-SMA female. All of our boards are either SMA female or RP-SMA male. RP-SMA Connectors
a b c d e f Connectors – Technologies and Trends (PDF). ZVEI – German Electrical and Electronic Manufacturers’ Association. August 2016.
Splice or butt connectors (primarily insulation displacement connectors) that permanently join two lengths of wire or cable Mroczkowski, Robert S. (1998). "Ch 1". Electrical Connector Handbook: Theory and Applications. McGraw Hill. ISBN 0-07-041401-7. Chassis or panel connectors permanently attached to a piece of equipment so users can connect a cable to a stationary device Applications [ edit ] Two paired screw terminals, typically used for connecting ceiling-mounted light fixtures
Products
The wire may be wrapped directly under the head of a screw, may be held by a metal plate forced against the wire by a screw, or may be held by what is, in effect, a set screw in the side of a metal tube. The wire may be directly stripped of insulation and inserted under the head of a screw or into the terminal. Otherwise, it may be either inserted first into a ferrule, which is then inserted into the terminal, or else attached to a connecting lug, which is then fixed under the screw head.
At SparkFun, we frequently refer to "2.0mm JST Connectors". This is yet another generalization of a specific product- JST is a Japanese company which makes high-quality connectors, and our 2.0mm JST connector of choice is the PH series two-position polarized connector. Ribbon Cable Interconnect Solutions" (PDF). TE Connectivity. April 2012. p.30 . Retrieved 1 July 2019. By its design the traditional failure mode in tin plated connections, fretting corrosion, is prevented . a b David Brearley (9 October 2015). "Would you trust your life to a 50-year old connector design?". Connector Tips . Retrieved 27 June 2019. PCB mount connectors soldered to a printed circuit board, providing a point for cable or wire attachment. [6] :56 (e.g. pin headers, screw terminals, board-to-board connectors) Common polarity diagrams for AC adaptors with barrel plugs. Positive polarity (tip positive, sleeve 0V) is most common. Diagram courtesy Wikipedia user Three-quarter-ten.
Benefits of Screw Terminals
C13 female IEC power connector, on a fairly standard AC power supply cable. Cables with this end can be found all around the world, usually with the dominant local AC connector at the other end. Another familiar connector group are those used for audio-visual applications--RCA and phono. While these can't truly be considered to be of the same family, as the various USB connectors are, we'll consider both of them to be in the same vein. "Phone" Type Connectors However, with the clamping plate type of screw terminal this time is reduced, since it is necessary only to insert the stripped wire between the terminal and the rear clamping plate then tighten the connection, using the screw to clamp the wire between the terminal and the clamping plate, without any need properly to wrap it around the screw head. pitch screw terminals, showing the insertion point of the wire to be connected, the retention screw which holds the wire in place, and the modular connectors on the sides of the individual units allowing multiple pieces to be ganged together. It is usually desirable for a connector to be easy to identify visually, rapid to assemble, inexpensive, and require only simple tooling. In some cases an equipment manufacturer might choose a connector specifically because it is not compatible with those from other sources, allowing control of what may be connected. No single connector has all the ideal properties for every application; the proliferation of types is a result of the diverse yet specific requirements of manufacturers. [7] :6 Materials [ edit ]
Great Deal 
New Comment