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However, then I simulated the circuit at 0.
For Zener diodes Ir can be called Izk, or in other cases as Ibr. So, looking at your graph and ignoring the black line at the very left because they don’t seem to be specifying a zener voltage at that rating!
1N Datasheet(PDF) – TRANSYS Electronics Limited
The zener voltage rating is right at the top edge of your graph the 20mA dagasheet. We can take IBV as equal to 10 times Ir. Which is it if either?
Other equations from the given parameters describing the capacitance of the junction, its evolution with temperature and more. CJO can be directly equal to the value specified in the datasheet as Cj or Ctot, in this case is 4pF.
Sign up or log in Sign up using Google. I simulated the following for various values of R, and the voltage drops quite a bit with small currents. Adding more basic information to what Andy Aka already said: All these parameters are used by SPICE to describe the behavior of the diode in the different situations of signal, for example in direct polarization in DC that, forward current will be:. If the reverse current is too low, they are either cut-off or just barely entering breakdown i.
ddatasheet The extraction of the parameters of the table from the values reported in the datasheet, is not immediate for almost none of the parameters. The only information related to it on the datasheet I could find was the following, however I’m not sure what curve I’m meant to be looking at:.
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Zener diodes are notoriously slack in their operating knee at low voltage ratings and this improves a lot when the voltage rises above 5V. Usually for this type of diodes the value of IBV is around uA.
Although the operation of the diode is quite simple, extract a model from datasheet takes some time.
Stick to the data sheet for most datashret but be prepared to do real tests on a batch if operating points significantly below test currents are required.
It looks like 0. You get the following results: At this point we have to derive the various parameters from the datasheet of the component.
However, there is a discrepancy when testing at 0.
SPICE modeling of a Diode from Datasheet
This suggests it is the righter curve. This gives a voltage of 2. If you look on page 2 of the data sheeet it tells you the test current.
Andy aka k 10 The 1N has a Vz of 4.