1NA datasheet, 1NA pdf, 1NA data sheet, datasheet, data sheet, pdf, BKC International Electronics, V, 1 W silicon zener diode. 1NA. 1NA. 1NA. 1NA. . This datasheet contains the design specifications for product develop- ment. Buy MULTICOMP 1NA online at Newark element 1NA – Zener Single Diode, V, 1 W, DO, Technical Datasheet: 1NA Datasheet.

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Working out the current limiting resistor we have: The ones with voltage of 5.

1NA ON Semiconductor / Fairchild | Ciiva

Sign up using Facebook. I’m not sure what 1nn4729a temperature coefficient is for this device and the data sheets are lacking in that respect. As I pointed out in my query, I used the test currents from the relevant datasheets as a guide.

Kvegaoro 2, 11 No load except for the DMM.

1NA datasheet & applicatoin notes – Datasheet Archive

Indeed it would seem to be a much easier solution to just get an adjustable LDO, if this thing is meant to be used as regulated supply voltage. What’s odd is that the BZX55C is showing more-or-less the same behaviour although with different resistors.


The dynamic resistance of the Zener may not be able to drop low enough, even with 70mA available to it, to make the proper resistor divider equivalent for the node to be equal to 3. How much current will th load require?

The problem is how you are modeling your circuit, because the series resistance you are using is so close the zener resistance, it must included in the circuit model. In my experience, low-voltage zeners anything below 5V ddatasheet seem to have a very soft ‘knee’ and not particularly ‘vertical’ current-vs-voltage curve.

WhatRoughBeast 49k 2 28 Actually, this does explain what I’m seeing and your result is daasheet spot on with what I’m reading. Can I still get a reliable voltage if Vcc dips below 5V?

It’s incorrect to add a voltage at the test current because of the dynamic resistance.

For low voltage shunt regulation either use a series regulator Datashete or a device such as the TL which has a band gap reference, and an opamp in a 3-poin package to create an almost perfect “Zener diode”. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

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Does this conflict with what Kvegaoro is saying? Both Zeners came from separate suppliers.

Rather than use rules of thumb which you may or may not understand, you should first look at the data sheet of the part you’re using. The next problem is that at 70mA and 4 volts, the power is 0. The two Zeners in question are: N14729a 8 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.

If you increase the resistor the voltage across the zener should go down.

(PDF) 1N4729A Datasheet download

Actually, it was a candidate for a regulated supply fed by a CCS. Post as a guest Name. If you want decent accuracy throw the zeners away and use some low dropout 3. Email Required, but never shown. If you include the dynamic resistance in the model, you must use a lower voltage for the ideal zener.

Andy aka k 10