PIN Diode

What is PIN Diode:

PIN Diode is the type of diode. The pin diode consists of heavily doped p and n regions separated by an intrinsic region. When reverse biased , the pin diode acts like a nearly constant capacitance.  When forward biased, the pin diode acts like a current controlled variable resistance.  The low forward resistance of the intrinsic region decreases with increasing current.

Applications of PIN Diode

Pin diodes are used as a dc controlled microwave switch operated by rapid changes in bias or as a modulating device that takes advantage of the variable forward resistance characteristic.  Since no rectification occurs at the pn junction, a high frequency signal can be modulated by a lower frequency bis variation.  A pin diode can also be used in attenuator applications because its resistance can be controlled by the account of current.

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PIN Diode StructurePIN Diode

 

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PIN Diode when forward biased

 

One Response to “PIN Diode”

  1. Qoree

    Mar 08. 2012

    Many other Ham Radio builders have dpteicauld this model. I have always been collecting these 50X 6Amp 1Kv High Voltage High Current Rectifier Diode and received totally free shipping.I ve been collecting Lot Of 10 1N34A Germanium Diode Am Fm Radio Tv on ebay.I feel this Ham Radio is among the list of most famous Ham Radios I found some used Mvam109 Nte618 Varactor Diode For The Broadcast Band on ebay.

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