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An insulation support crimp for open barrel terminals with a crimped form that resembles the letter "O." The crimp conforms the shape of round wire insulation.
A doughnut-shaped ring of rubber used as a seal around the eperiphery of the mating insulator interface of cylindrical connectors.
In fiber optics, an optical carrier signal at the Nth level of the Synchronous Optical NETwork (SONET) signal hierarchy
Outside Diameter
Original Equipment Manufacturer
Conductor displaced within the cross-section of its insulation or not perfectly centered within the insulation.
A terminal whose tongue is forward of, and whose stud hole is offset from the centerline of terminal the barrel. Also called offset tongue terminal.
Offset Terminal Retention (OTR)
Retention of headers to a PCB prior to soldering is typically accomplished by adding a retention peg to the housing or an offset (kink) to the PC tails of the header.
Most manufacturers kink the PC tails after the tails are stamped. At Premium line , our OTR manufacturing process, the terminal is blanked (stamped) with the precise offset or kink in it.
This allows us to maintain tight tolerances in the PC tail shape and spacing that result in precise 3.0mm tail spacing.
Oxygen-Free Conductivity Copper. OFHC has no residual deoxidant, a 99.95 percent minimum copper content, and an average annealed conductivity of 101 percent.
The electrical unit of resistance, per Ohm's law. The value of resistance through which a potential difference of one volt will maintain a current of one ampere.
A contact between two materials across which the voltage drop or resistance is the same regardless of the direction of current flow.
An instrument that measures resistance.
A characteristic surface resistance value measured via unit square electrodes that are a unit square apart. Numerically equal to the volume resistivity divided by the thickness of the conductive surfaces.
Omni-axial Silver-based Conductive Adhesive
In membrane switch technology, an adhesive that conducts in all axes.
A type of stamping die that works on one terminal/pin per stroke of the stamping press.
Operational Amplifier
Terminal with an open design for its conductor and/or insulation barrel that is crimped closed 360° around a conductor of wire.
A circuit with an incomplete path for current. Infinite resistance.
A feature of some semiconductor components that permits the formation of larger arrays by wiring several units together.
A female-opening contact unprotected from possible damage or distortion from a test probe or other wedging device.
A transmission line design, of low noise immunity, which is essentially "open" to external world noise in terms of signal line exposure without any shielding.
See Open Line.
The surfaces at which a connector is normally separated.
The useful life of a switch, terminated by failure or by the switch reaching one of the pre-designated end-of-life criteria.
The position of the actuator when the desired switching action occurs.
The position of the actuator when the snap action of all switch contacts occurs during actuation stroke.
Either 250 or 600 volts, as established by UL standards. These voltage ratings are Root Mean Square (RMS) values and apply to both AC and DC voltages.
Typically, the higher operating voltage ratings are obtained by fully enclosing both male and female terminals in the housing.
A type of linear integrated circuits. A universal and general purpose amplifier, very versatile and basically a high-gain, direct coupled amplifier. Abbreviated: Op Amp.
In fiber optics, materials which offer a low optical attenuation to transmission of light energy.
A device that couples a light signal between light components; i.e., transmitter/cable, cable/cable or cable/receiver.
The Premium line system has a unique connector that integrates the fiber alignment function of the connector into the LED and receiver.
In fiber optics, light leakage from one fiber to another by evanescent boundary wave interaction. Sometimes called crosstalk.
A single, separate optical transmission element consisting of a core and cladding. A fiber optic cable consists of one or more optical fibers along with strengthening material and a protective covering.
In fiber optics, a construction in which fibers are grouped and regrouped to build up an area, usually with some degree or type of imperfection developing at the boundaries of the subgroup.
A solid state/optical version of the relay principal. A light emitting diode (LED) and a photo detector are coupled in a single package. While this device couples light, it electrically isolates the input from the output.
See Opto Coupler.
Technology that blends optical and electronic sciences and engineering methods.
A Boolean logic gate used in computer arithmetic.The OR gate has an output of 1 if one of its inputs is 1.
A solder flux that contains potentially corrosive and conductive salts. The circuit board assembly on which it is used must be designed for water cleaning.
A method by which pins of a connector that is mounted vertically on one side of a backplane can be used by one mounted on the other side, and vice versa. Although somewhat difficult and expensive to do, this mounting may be used when multiple cards on the back are to receive information from one on the front.
A circuit of electronic components that produces alternating current at a fixed frequency determined primarily by a crystal or by the values and time constants of the components of the oscillator circuit.
An instrument for making visible the instantaneous values of voltage/current as a function of time.
Occupational Safety and Health Administration
Open System Interconnect. System design concept that allows communications equipment to be interfaced, regardless of type, supplier, operating system, or function. The ISO has defined a seven-layer model for OSI.
De-aeration or other gaseous emission from a PCB assembly (board, component, or connector) when exposed to a reduced pressure, or heat, or both.
The increase in conductor width at one side of a conductor, caused by plating build-up, over that delineated on the production master.
Sometimes used for batch terminations, this technique uses an oven brought up to soldering temperature. Oven soldering can make many terminations simultaneously, but is limited in usefulness because few materials and components can withstand the sustained, high temperature.
Finished diameter over wire or cable.
Plating that covers the entire surface of the pin/terminal.
Increase in printed circuit conductor width caused by plating buildup or by undercutting during etching.
A load that draws more than the rated current or power.
A metal shell, usually of two pieces, that is placed over the section of the connector where the cable is terminated to protect the wires from the forces of injection molding of the plastic overmolded covers.
Force applied to an actuator to move from operating position to full overtravel position.
Extremely reactive form of oxygen, normally occurring around electrical discharges, and present in the atmosphere in small but active quantities. In sufficient concentrations ozone can break down certain rubber insulations under tension (such as a bent cable).
Exposure of material to a high concentration of ozone to give an accelerated indication of degradation expected in normal environments.
