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Discrete Semiconductors

The discrete semiconductors section includes distinct circuit components such as, transistors, diodes, rectifiers, thyristors, triacs, SCRs, etc.
Avalanche Diodes (53 Companies)
An Avalanche Diode is a silicon diode that has a high ratio of reverse to forward resistance until Avalanche breakdown occurs. After breakdown the voltage drop across the diode is essentially constant and is independent of the current.
Bipolar Junction Transistor (BJT) is a three-terminal device constructed of doped semiconductor material and may be used in amplifying or switching applications. Bipolar Transistors are named because their operation involves both electrons and holes.
Bipolar Transistors (56 Companies)
A Bipolar Transistor uses both negative and positive charge carriers. It is the choice for analog circuits, both integrated and discrete.
Bridge Rectifiers (56 Companies)
A diode bridge or bridge rectifier is an arrangement of four diodes in a bridge configuration. It converts AC input into DC output. A bridge rectifier provides full-wave rectification from a two-wire AC input and has two diode drops rather than one.
Chip Diodes (44 Companies)
An electric component that conducts current in only one direction. Diodes are made from semiconductor materials such as silicon, germanium or selenium and are used as voltage regulators, signal rectifiers, oscillators and signal modulators/demodulators.
Chip Transistors (28 Companies)
A Transistor Chip is a very small unencapsulated transistor element used in microcircuits.
Current Regulating Diodes (25 Companies)
Constant current diode (CLD) is actually a JFET with the gate shorted to the source functioning like a two-terminal current limiter or current source. They allow a current through them to rise to a certain value, and then level off at a specific value.
Darlington Transistors (41 Companies)
A semiconductor which combines two bipolar transistors in a single device. The current amplified by the first is amplified further by the second. This gives a high current gain and takes less space than two discrete transistors in the same configuration.
Diacs (18 Companies)
DIACs are a Thyristor without a gate electrode. They are typically used for triggering both Thyristors and TRIACs - a bidirectional member of the Thyristor family.
Diode Detectors/Emitters (55 Companies)
A Diode Detector is one or more semiconductor or electron-tube diode used to provide a rectified output that has an average value proportional to the original modulation.
The field-effect transistor (FET) is a type of transistor that relies on an electric field to control the shape and hence the conductivity of a 'channel' in a semiconductor material.
GaAs Transistors are active semiconductor devices made of Gallium Arsenide compound displaying exceptional carrier mobility with three or more electrodes, the emitter, base and collector. Used in high-frequency amplifier circuits and microwave RFs.
Gunn Diodes (6 Companies)
A Gunn Diode has a region of negative differential resistance with two heavily N-doped terminals and a thin layer of lightly doped material in between. It is used in high-frequency electronics.
The High Voltage Diode (Rectifier) works along with the high-voltage capacitor to effectively double the already-high voltage (about 3000 - 5000 volts DC), that is provided by the power transformer.
High Voltage Rectifier is a general term used for rectifiers with peak reverse voltages above 500 volts.
Infrared Diodes (53 Companies)
An Infrared-Emitting Diode is a device with a semiconductor junction in which infrared radiant flux is non-thermally produced when a current flows as a result of applied voltage. In a forward biased junction, n electrons are injected into the p region.
The IGBT is a high efficiency, fast switching, three-terminal power semiconductor device. It is designed to rapidly turn on and off. Amplifiers that use it often synthesize complex waveforms with pulse width modulation and low-pass filters.
A Phototransistor is a bipolar transistor encased in a transparent case so that light can reach the base-collector junction. The electrons that are generated by photons are injected into the base. This current is amplified by the transistor operation.
A PIN Diode is a diode with a wide, lightly doped 'near' intrinsic semiconductor region between a p-type semiconductor and an n-type semiconductor region. The p-type and n-type regions are typically heavily doped because they are used for ohmic contacts.
Power Diodes (57 Companies)
A two-terminal semiconductor device that allows current to flow through it in one direction. With the proper voltage polarity across the device, it will act as a conductor. When the voltage polarity is reversed, the device will act as a non-conductor.
Field-Effect Transistor, (FET) is a device in which the resistance between two terminals, the source and drain, depends on a field produced by a voltage applied to the third terminal, the gate.
Power MOSFETs (58 Companies)
Commonly used low-voltage transistors to handle high power. Have large current carrying capacity, off-state voltage blocking capability, with low on-state voltage drop. Found in power supplies, DC to DC converters, and low voltage motor control circuitry.
Power Rectifiers (49 Companies)
Power Rectifiers are electrical devices that convert alternating current (AC) to direct current (DC).
Power Transistors (65 Companies)
A Power Transistor is a transistor capable of handling high current and power.
RF/Microwave Transistors (42 Companies)
A mainstay in wireless communications, RF Transistors are active semiconductor devices designed to handle high-power, GHz frequency signals in devices such as stereo amplifiers, radio transmitters, and television monitors
Schottky Diodes (83 Companies)
Feature a low forward voltage drop and a very fast switching action. Diodes found in switch-mode power converters, discharge protection circuitry, logic circuitry, HF applications with mixers and detectors, and general circuit design, etc.
Schottky Rectifiers (43 Companies)
A Schottky Rectifier is a high-speed rectifier that makes use of the rectification effect of a metal-to-silicon barrier. Low forward-voltage characteristics provide high rectification efficiency, while forward conduction enhances switching speed.
Selenium Rectifiers (7 Companies)
A metallic rectifier with a thin layer of selenium deposited on one side of an aluminum plate and a highly conductive metal over it, allowing electrons to flow freely from the coating to the selenium than in the opposite direction providing rectification
Semiconductor Rectifiers (48 Companies)
A Semiconductor Rectifier consists of one or more disks of metal under pressure-contact with semiconductor coatings or layers, such as a copper oxide, selenium, or silicon rectifier (contact rectifier).
Sidacs (15 Companies)
SIDAC (Silicon Diode for Alternating Current) is a bi-directional thyristor diode, technically specified as a bilateral voltage triggered switch. Its operation is similar to a DIAC with a higher breakover voltage and current handling capacity than DIACs.
Silicon Diodes (89 Companies)
Silicon Diode also called silicon detector is a crystal detector used for rectifying or detecting uhf and shf signals. It consists of a metal contact held against a piece of silicon in a particular crystalline state.
Silicon Rectifiers (57 Companies)
A Silicon Rectifier has one or more silicon cells or cell assemblies which consist of a positive and negative electrode that conducts current effectively in one direction, with lower forward voltage drop and higher reliability than Selenium Rectifiers
A circuit that holds an output voltage at a predetermined value or causes it to vary according to a predetermined plan, regardless of normal input-voltage changes or changes in the load impedance.
Silicon Transistors (54 Companies)
A transistor in which silicon is used as the semiconducting material.
Switching Diodes (61 Companies)
General form of diodes which have a high resistance (corresponding to an open switch) below a specified applied voltage, but changes suddenly to a low resistance (closed switch) above that voltage.
Switching Transistors (37 Companies)
A switching transistor is a three-terminal device with one terminal controlling the electrical impedance between the other two. Transistor switching circuits include inverters, converters, switching voltage regulators, and relay and solenoid drivers.
Thyristors (Incl. SCRs) (51 Companies)
Thyristors and SCRs are solid state devices that contain four layers of alternating N and P-type material. They act as a switch, when their gate receives a current pulse, and continue to conduct for as long as they are forward biased.
Transistor Arrays (28 Companies)
Transistor Arrays are used for general purpose applications, function generation and low-level, low-noise amplifiers. They include two or more transistors on a common substrate to ensure close parameter matching and thermal tracking.
Triacs (28 Companies)
An electronic component approximately equivalent to two silicon-controlled rectifiers (SCRs/thyristors) joined in inverse parallel connected at their gates, containing a bidirectional electronic switch which can conduct current in either direction.
Tunnel Diodes (27 Companies)
A Tunnel Diode or Esaki Diode is a type of semiconductor diode which is capable of very fast operation, well into the microwave frequency region, by using quantum mechanical effects.
Ultrafast Rectifiers (47 Companies)
The Ultrafast Rectifier diode changes the AC Voltage coming from the secondary transformer to unregulated pulsating DC. Since the AC is unregulated, the resultant pulsating DC is also unregulated and will vary in amplitude as the power line varies.
Unijunction Transistors (9 Companies)
A Unijunction Transistor (UJT) is an electronic semiconductor device that has only one junction. The UJT has three terminals: an emitter (E) and two bases (B1 and B2)
Varactor Diodes (21 Companies)
A Varactor Diode is a type of diode which has a variable capacitance that is a function of the voltage impressed on its terminals.
Voltage Doublers (15 Companies)
A voltage multiplier which rectifies each half cycle of the applied alternating voltage separately, and then adds the two rectified voltages to produce a direct voltage having approximately twice the peak amplitude of the applied alternating voltage.
Zener & Stabistor Diodes (55 Companies)
Used mainly to provide a voltage reference, voltage regulation, voltage limiting, over-voltage protection, etc.

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