Hardware
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Semiconductor - Varactor Diode Manufacturers
[Diodes] [Varactor Diodes] [Zener Diodes] [LED's]
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A General listing of Varactor Diode Manufacturers, Vendors and Related
sites.
The products the companies produced are listed under the company name
which are indexed in alphabetic order.
Zener Diode manufacturers are listed on the Zener Diode
manufacturers page.
LED manufacturers are listed under Components/Passive/LED's-Displays
For ESD, EMI and Surge issues try the Circuit Protection page.
Crystalonics {Varactor Tuning Diodes}
Knox Semiconductor, Inc. {Military/Commercial Abrupt Varactor tuning diodes}
MicroMetrics {Tuning Varactors}
Mpulse Microwave {Varator Diode Manufacturer}
NTE {Varactor-PIN Diode}
Renesas Technology Corp {Vari Cap Diodes}
Skyworks Solutions, Inc. {Varactor Diode Manufacturer}
Toko America Inc {Varactor Diode Manufacturer}
Diode types, by symbol;
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A diode is a two terminal device using a PN junction. Diodes may be made
from Silicon, Germanium, Selenium, or Gallium Arsenide. Most diodes will
be made of Silicon. Normally a forward voltage drop of 0.7 volts will be
seen with Silicon Diodes, and a forward voltage drop of 0.3 volts will be
seen with Germanium Diodes. Diode types: Rectifier Diode: Heavy duty [high current] used to convert AC to DC Tunnel Diode: Has a negative resistance region. The current through the diode increases up to a certain voltage, than with increasing voltage the current decreases until a voltage point is reached and the current begins to increase again Zener Diode: Designed to conduct in the reverse [bias] direction: with a precise breakdown voltage [Vz] Varactor Diode: 'Varicap' or 'VVC', Voltage [dependent] variable capacitor [varies in picofarads] Schottky Diode: A Schottky Diode is designed with a rapid turn on and off once the threshold voltage is reached Light Emitting Diode: 'LED', Gives off light when energized [forward biased] Photodiode: Operated in reverse-bias, reverse current increases 'almost' linearly with increase in incident light Varistor: Resistance [flow of current] changes as a function of applied voltage voltage. A varistor may also be called a VDR [Voltage Dependent Resistor]. Varistors will have a negative voltage coefficient [high resistance at low voltages and a low resistance at high voltages]. Metal Oxide Varistor: [MOV] See listing above. MOV devices are used in parallel with the load. Transient Voltage Suppressor: 'TVS', Designed to absorb a transient over-voltage. The device may be designed as Uni-Polar device protecting in one direction or a Bi-Polar device protecting the circuit in both directions. TVS manufacturers are listed on the Transient Voltage Suppressor page [Nonlinear Resistor Manufacturers]. TVS devices are used in parallel with the load. Definitions by application, include: Clamping Diode: A diode used to limit the peak voltage on a line to a pre-determined maximum voltage. Welding Diode: A diode with a very large forward current rating. |
Diode Derating Guide Lines {How to Derate diodes based on temperature}
This page provides a listing of Electronic Diode Manufacturers. The products or diode types the companies produces are listed under the company name which are indexed in alphabetic order. The EMI/RFI device manufacturers page may also list some diode manufacturers. The Circuit Protection page may have additional sources for manufacturers. Additional electronic component manufacturers may be found by selecting the Components icon below, or electronic Equipment manufacturers may be found by selecting the OEM Equipment icon.
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