Talk:PIN diode

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Can you explain your idean in more detail?[edit]

"They are not limited in speed by the capacitance between n and p region anymore, but by the time the electrons need to drift across the undoped region." This is not true. It depends on the thickness of the undoped zone and the area of the detector. Usually you'd want to maximise the area and thickness so that the drift time and the capacitances has about the same limitation in speed.

"A PIN diode exhibits an increase in its electrical conductivity as a function of the intensity, wavelength, and modulation rate of the incident radiation." Well usually you'd use the pin diode in reverse BIAS and it is not so much the conductivity change as the current generation that is the physics behind it. But I guess it is almost the same thing.

"PIN diodes act as near perfect resistors at RF and microwave frequencies. The resistivity is dependent on the DC current applied to the diode." A PIN diode acts as a diode not as a resistor. A pin diode has an internal capacitance thus not a perfect resistor. The capacitance is dependant on the DC voltage applied to the diode.

Any comments?

Yes, this page is better than nothing but it needs some work. I'm not the one to do it though at the moment, I'm not familiar with PIN diodes.

I just finished my undergraduate thesis on studying PiN diodes when I get some time I am going to add corrections, in 8-10 weeks you can looked for my at my thesis, at the University of Central Florida "Modeling and Analysis of PiN Power Diodes in Series" —Preceding unsigned comment added by (talk) 19:19, 2 April 2008 (UTC)

Possible resource worth reviewing[edit]

Anybody with the expertise (Atlant, maybe?) willing to take a crack at parsing this [1] and using the information to help fill in the technical details in the article. I tried to clean up the operation section, but it's still sketchy. I don't find the holey bucket analogy particularly insightful. If anything, I think it makes things more confusing. --W0lfie (talk) 15:53, 7 April 2008 (UTC)

Possible application to be included[edit]

this link
gives a use of pin diodes in silicon lasers.
i'm not sure if this is relevant or too detailed for this section and if it is relevant i thus far lack the technical skill to summarise it.
nice piece of work though
anyone bored?
Ashspirit (talk) 22:11, 27 October 2008 (UTC)

Colors in diode figure[edit]

Is there a reason for the gradient besides cosmetic reasons? Because the gradients make it harder to see the colors clearly, especially with red-green vision deficiency. So ideally they would be solid colors, or less pale gradients. — Preceding unsigned comment added by (talkcontribs) 08:55, 23 May 2014‎

Wrong explanation in "Operation"[edit]

This sentence does not make any sense:

"This electric field helps in speeding up of the transport of charge carriers from P to N region, which results in faster operation of the diode, making it a suitable device for high frequency operations."

Wrong! A PIN diode is SLOWER than a traditional diode, that's why it acts like a resistor, thus it does not rectify high frequency signals since the charges in the intrinsic zone do not reach the p or n zone any more. Sorry, I can't remember the real details any more, i just know that the quotet sentence from the operation section does not make any sense. — Preceding unsigned comment added by (talk) 13:55, 19 August 2014 (UTC)

That makes sense. I work in radiocommunication systems and P-I-N diodes are practically the only device used today in transceiver transmit - receive switching at the antenna port. Two P-I-N diodes, separated by a quarterwave stub, make the switching circuit. One series P-I-N between the transmitter output and the antenna and a second shunt P-I-N between the other end of the quarterwave stub and ground is used on the receive side.
In receive mode, both P-I-N diodes are OFF so the RF signal received at the antenna is isolated from the transmitter by the series device and is routed to the receiver via the quarterwave line and not blocked by the OFF shunt P-I-N.
In transmit mode, both P-I-N diodes are solidly forward biased and act as low-value resistors. The series P-I-N connects the transmitter to the antenna and the ON shunt P-I-N RF shorts the quarterwave line's other end thus preventing the transmit RF power to reach the receiver and the quarterwave line, doing it's job transforms the shunt P-I-N short into a high impedance circuit not interfering with the transmitter.
— Preceding unsigned comment added by Normand Martel (talkcontribs) 06:00, 23 January 2016