http://debianws.lexgopc.com/wiki143/index.php?action=history&feed=atom&title=Constant-current_diodeConstant-current diode - Revision history2026-05-14T19:45:22ZRevision history for this page on the wikiMediaWiki 1.43.1http://debianws.lexgopc.com/wiki143/index.php?title=Constant-current_diode&diff=7053748&oldid=previmported>DigitalIceAge: Linking Siliconix2024-10-10T18:50:37Z<p>Linking <a href="/wiki143/index.php?title=Siliconix&action=edit&redlink=1" class="new" title="Siliconix (page does not exist)">Siliconix</a></p>
<p><b>New page</b></p><div>[[File:Current limiting diode symbol.svg|thumb|80px|Electric symbol]]<br />
A '''constant-current diode''' is an electronic device that limits current to a maximal specified value for the device. It is known as a '''current-limiting diode''' ('''CLD''') or '''current-regulating diode''' ('''CRD''').<br />
<br />
[[File:Current limiting diode - internal structure.svg|thumb|150px|Internal structure]]<br />
It consists of an n-channel [[JFET]] with the gate shorted to the source, which functions like a two-terminal current limiter (analogous to a voltage-limiting [[Zener diode]]). It allows a current through it to rise to a certain value, but not higher.<br />
<br />
Note that some devices are unidirectional and voltage across the device must have only one polarity for it to operate as a CLD, whereas other devices are bidirectional and can operate properly with either polarity.<br />
<br />
[[Wide-bandgap semiconductor|Wide-bandgap materials]] such as [[silicon carbide]] have been used in production devices to enable high-voltage applications in the kilovolt range.<ref>{{cite web |title=CALY Technologies SiC CLD devices |url=https://caly-technologies.com/sic-products/sic-protection-devices/sic-current-limiting-devices-cld |website=[[CALY Technologies]] |access-date=26 April 2020}}</ref><br />
<br />
== References ==<br />
{{reflist}}<br />
<br />
==External links==<br />
* [http://sub.allaboutcircuits.com/images/05269.png IEEE 315 symbol for current-regulating diode]<br />
* {{Youtube|id=zKVL2XWqDI0|title=Advantages of Constant Current Regulators (CCR) in Driving LEDs}}<br />
;Diode<br />
* [https://web.archive.org/web/20190225201135/http://www.mccsemi.com/up_pdf/CLD20B(DO-214AA).pdf CLD diode datasheet], MCC<br />
* [http://www.atcsemitec.co.uk/pdfdocs/Semitec-CRDs.pdf CRD diode datasheet], Semitec<br />
* [https://www.linearsystems.com/_files/ugd/7e8069_39116d53e0544ba89382a8ea395563c6.pdf J500 diode datasheet], Linear Systems / [[Siliconix]] / [[Vishay]]<br />
* [http://centralsemi.com/PDFs/products/1N5283-5314.pdf 1N5283 to 1N5314 diode datasheet], Central Semiconductor<br />
<br />
;JFET<br />
* [https://www.onsemi.com/pub/Collateral/MMBF5459-D.pdf 2N5457/8/9 & MMBF5457/8/9 JFET datasheet], ON Semiconductor (Former Fairchild)<br />
<br />
{{Electronic components}}<br />
<br />
[[Category:Diodes]]<br />
[[Category:Over-current protection devices]]<br />
<br />
<br />
{{electronics-stub}}</div>imported>DigitalIceAge