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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I suspect that if you retest the “1N” n14729a with a test current of something like 20mA 70 ohms you may find that they’re within spec voltage-wise.
As shown in the circuit below which models the behavior that you are seeing of a voltage reading of about 4V from the zener diode. What’s odd is that the BZX55C is showing more-or-less the same behaviour although with different resistors. That part of kveagaro’s answer is not correct.
Both Zeners came from separate suppliers.
Sign up or log in Sign up using Google. I have a question about the regulation accuracy or lack of of a 3V6 Zener diode.
(PDF) 1N4729A Datasheet download
Andy aka k 10 Zeners are notoriously power inefficient even at no load. It dataaheet odd then that the datasheets would specify an Izt of 69mA if it didn’t show the zener in the best light. Actually, as it happens I had reached the same conclusion. As shown in the circuit below which models the 1n4279a that you are seeing of a voltage reading of about 4V from the zener diode simulate this circuit — Schematic created using CircuitLab.
1NA Datasheet(PDF) – Jinan Gude Electronic Device
Because it rises as per the quote you must have an unstable power source of 5V and this is rising as you increase the load resistance. If you want decent accuracy throw the zeners away and use some low dropout 3.
For low voltage shunt regulation either use a series regulator LDO 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”. What output volta de you require? First this stated in the question: If you increase the resistor the voltage across the zener should go down.
Can I still get a reliable voltage if Vcc dips below 5V? Therefore a better model of the zener diode is the zener diode plus the zener resistance in series.
1NA Datasheet(PDF) – Diotech Company.
Spehro Pefhany k 4 Typically the dynamic resistance of the 1NA is about 5 ohms, so you could approximate it with an ideal 3. Even if it specified at 70mA, there is going to be some there and in this case it is not negligible therefore it must be incorporated in to your circuit model, that why your circuit analysis provides a different answer but adding the zener resistance to the model gives a solution that approaches more closely your result.
The ones with voltage of 5. Kvegaoro 2, 11 Null 4, 10 22 Home Questions Tags Users Unanswered. The dynamic resistance describes the small-signal behavior near the test current.
Sign up using Email and Password. WhatRoughBeast 49k 2 28 Can you expand on the statement: