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### SPICE modeling of a Diode from Datasheet – YouSpice

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:. By continuing to use our website you are agreeing to our use of cookies.

Assume we want to model a silicon diode 1N You can draw a plot of the reverse voltage vs. Using linear scale you will get this: By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

## SPICE modeling of a Diode from Datasheet

You can see the “knee” starting about at 1mA and ending at about 2mA. Using linear scale you will get this:. At this point we have to derive the various parameters from the datasheet of the component. By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

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I simulated the following for various values of R, and the voltage drops quite a bit with small currents. All these parameters are used datasyeet 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:.

We can take IBV as equal to 10 times Ir. 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: It looks like 0.

CJO can be directly equal d1n70 the value specified in the datasheet as Cj or Ctot, in this case is 4pF. Although the operation of the diode is quite simple, extract a model from datasheet takes some time. Which is it if either? What’s the relationship between the current flowing through the Zener Diode?

Of course this doesn’t seem too sharp because of the logarithmic scale on the horizontal axis. Other equations from the given parameters describing the capacitance of the junction, its evolution with temperature and more. It’s nice if the simulator c1n750 but at this level of detail it doesn’t surprise or worry me.

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! So then, I simulated the circuit with a current source instead of R1: Sign up using Facebook. For Zener diodes Ir can be called Izk, or in other cases as Ibr. The extraction of the parameters of the table from the values reported in the datasheet, is not immediate for almost none of the parameters. Sign up or log in Sign up using Google.

Relationship between Zener voltage and current?

## 【D1N750】Electronic Components In Stock Suppliers in 2018【Price】【Datasheet PDF】USA

Stick to the data sheet for most things but be prepared to do real tests on a batch if operating points significantly below test currents are required. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Adding more basic information to what Andy Aka already said: Post as a guest Name.

Zener diodes are notoriously slack in their operating knee at low voltage ratings and this improves a lot when the voltage rises above 5V. However, there is a discrepancy when testing at 0. The zener voltage rating is right at the top edge of your graph the 20mA point. However, then I simulated the circuit at 0. Andy aka k 10 The 1N has a Vz of 4. This gives a voltage of 2. This suggests it is the righter curve.

If you look on page 2 of the data sheeet it tells you the test current. If the reverse current is too low, they are either cut-off or just barely entering breakdown i.

Email Required, but never shown. Usually for this type of diodes the value of IBV is around uA. You get the following results: Home Questions Tags Users Unanswered.