help identifying unknown components, easy.

[Cew27]

hey guys, my first report for uni is due in soon. basically just have to identify unknown components from the i/v characteristics.



these are the graphs i am to use to conclude the identification of the components.
the middle graph is obviously a resistor as i/v are directly proportional
the other two i believe to be diodes.
one possible a schottky the other a zener?
any help and/or links to information about this subject is much appreciated.

 

[2010ee179]

the middle graph is obviously a resistor as i/v are directly proportional
the other two i believe to be diodes.
one possible a schottky the other a zener?

Yeah I think, first one is for normal Si diode...second one is for resistor....and third one is for zener diode.

 

[Cew27]

would the first graph not be the zener diode? due to the lower reverse breakdown voltage?

 

[2010ee179]

Nopes...Zener diodes usually have large reverse breakdown voltage that's what which make them different from common diodes.

Breakdown voltage for commonly available zener diodes can vary widely from 1.2 volts to 200 volts....

 

[logicon]

Nopes...Zener diodes usually have large reverse breakdown voltage that's what which make them different from common diodes.

Breakdown voltage for commonly available zener diodes can vary widely from 1.2 volts to 200 volts....

If you follow the order of the graph:
1. Zener diode
2. Resistor
3. Schottky Diode

 

[ark5230]

Yes, logicon is right. The details of the plot at the bottom may also help but it is difficult to make out what is what ? These are qualitatively and quantitatively different.