Some screw terminals feature colour coded screws for ease of identification and to aid trouble shooting. Benefits of Screw Terminals a b "Molex Connectors Explained, as used in Pinball". Marvin's Marvelous Mechanical Museum. 4 March 2005 . Retrieved 1 July 2019. The above two connectors were designed to be used together, but there was a problem with this configuration and the FCC started moving towards Part 15 compliance. All this means is that all the SMA RF connectors are changing gender (center pin). Really annoying for those of us who need to mate an antenna to an RF device. The FCC gender change was instituted to prevent home users from damaging RF equipment (think home WiFi) when screwing on an antenna. If all antennas are female, there is no way to damage the center connector.

Sometimes both ends of a cable are terminated with the same gender of connector, as in many Ethernet patch cables. In other applications the two ends are terminated differently, either with male and female of the same connector (as in an extension cord), or with incompatible connectors, which is sometimes called an adapter cable. Screw terminals are used extensively in building wiring for the distribution of electricity - connecting electrical outlets, luminaires and switches to the mains, and for directly connecting major appliances such as clothes dryers and ovens drawing in excess of 15 amperes.Chassis or panel connectors permanently attached to a piece of equipment so users can connect a cable to a stationary device Really, you can ignore the gender descriptor. If you have a RP-SMA board or module, you need a RP-SMA antenna and so forth for SMA. Pretty simple, right?! Just make sure to match the antenna frequency with the your board. Applications [ edit ] Two paired screw terminals, typically used for connecting ceiling-mounted light fixtures 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.

Foreman, Chris, "Sound System Design", Handbook for Sound Engineers, Third Edition, Glen M. Ballou, Ed., Elsevier Inc., 2002, pp.1171–72. Assembly of a screw connection requires some care in workmanship to ensure proper removal of insulation, containment of all wire strands, and the adequate tightening of the screw. If the wire diameter is small in relation to the size of the screw, the wire may be cut through by the over-tightening of the screw. This is less likely to occur when a wire is clamped between two plates by the action of a screw. Since wire strands may not be contained by the screw head in a basic screw terminal, stranded wires may be first crimped into a ferrule to prevent the bridging of terminals; this partly offsets the simplicity and economy of a "bare" wire termination. a b c d e f Connectors – Technologies and Trends (PDF). ZVEI – German Electrical and Electronic Manufacturers’ Association. August 2016. Alternatives to screw terminals include spring terminals (a.k.a. "push-in", "cage-clamp", or "poke-home" connectors). Spring terminals work in a similar fashion as screw terminals. However, instead of tightening a screw to make a connection with piece of wire, a spring clamps together pieces of metal together.

Main Product Lines

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.

a b Horowitz, Paul; Hill, Winfield (1989). The Art of Electronics (2nded.). Cambridge University Press. ISBN 0-521-37095-7. 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 ConnectorsEvans, Bill (2011). Live sound fundamentals. Course Technology. pp. 24, 29. ISBN 978-1-4354-5494-1. The M12 connector, specified in IEC 61076-2-101, is a circular electrical plug/receptacle pair with 12mm OD mating threads, used in NMEA 2000, DeviceNet, IO-Link, some kinds of Industrial Ethernet, etc. [16] [17]

Anything 2.4GHz (Bluetooth, ZigBee, WiFi, and Nordic) generally use the new convention: RP-SMA male on the antennas and RP-SMA female on the modules. 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 ] a b Reference Designations for Electrical and Electronics Parts and Equipment: ASME Y14.44-2008: Section 2.1.5.3 (2). ASME, Fairfield, NJ. 2008. Archived from the original on 2010-03-13 . Retrieved 2012-02-03. the stationary (more fixed) connector of a mating pair shall be designated J or X ... The movable (less fixed) connector of a mating pair shall be designated P IEC connectors are used almost exclusively for AC power input. The nice thing about using one on a project is that IEC-to-wall cables are extremely common and available with localized wall plugs for most international locations! JST Connector 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.David, Larry (17 March 2012). "Engineering Definitions – 'Com' to 'Con' ". Electronic Engineering Dictionary Terms. Connector . Retrieved 30 June 2019. SparkFun uses SMA-type connectors on a few boards that need a 50 Ohm impedance connection to an external antenna ( GPS, Bluetooth, cellular, Nordic, and XBee). However, some of these boards use different genders and polarities of the SMA connector. Therefore, we need different antennas to match the specific gender or polarity of the RF connections. a b c Worley, Jon (31 July 2018). "Circular Connector Terminology Guide". NYK Component Solutions . Retrieved 2018-10-15. Shielding - USB connectors are shielded, such that a metal shell which is not part of the electrical circuit is provided. This is important to keep the signal intact in environments with a lot of electrical "noise".