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Which side is cathode and anode on LED?

Have you ever wondered which side is the cathode and anode on an LED? Understanding the polarity of an LED is crucial when it comes to wiring and using these popular electronic components. In this article, we will delve into the world of light-emitting diodes (LEDs) and discuss the significance of identifying the cathode and anode.

LEDs are polarized components, meaning they have a specific orientation for proper functioning. The cathode and anode of an LED refer to the two terminals of the diode. The cathode is the negative terminal, while the anode is the positive terminal. It is essential to correctly identify these terminals to ensure the LED functions as intended.

Identifying the cathode and anode on an LED is relatively straightforward. In most cases, the longer leg of the LED is the anode, while the shorter leg is the cathode. Additionally, there may be a flat edge on the rim of the LED near the cathode side. This flat edge can help you determine the orientation of the LED and identify the cathode terminal easily.

When wiring an LED, it is crucial to connect the cathode to the negative side of the power source and the anode to the positive side. Reversing the polarity of an LED can result in the LED not lighting up or even getting damaged. Therefore, always double-check the orientation of the LED before connecting it to a power source.

In conclusion, understanding which side is the cathode and anode on an LED is essential for proper usage of these electronic components. By correctly identifying the terminals and ensuring the correct polarity, you can make the most of your LEDs and avoid any potential damage. Next time you work with LEDs, remember to pay attention to the orientation of the cathode and anode for optimal performance.

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Comments (45)

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Van 2025-04-03 06:42:21

Great explanation on identifying the cathode and anode of an LED. Very helpful for beginners!

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Pecher Callum 2025-04-03 06:42:21

The article is clear and concise. It answered my question perfectly.

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Sørensen Alvaro 2025-04-03 06:42:21

I wish there were more visual aids to help distinguish the cathode and anode.

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Clarke Annabelle 2025-04-03 06:42:21

Simple and straightforward. Exactly what I needed.

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Olsen Ivo 2025-04-03 06:42:21

Could include more examples of different LED types.

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نكو 2025-04-03 06:42:21

Very informative. Now I can easily identify the sides of an LED.

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Hokkanen Russell 2025-04-03 06:42:21

The explanation is a bit technical for complete beginners.

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Reuther Mayya 2025-04-03 06:42:21

Perfect for quick reference. Bookmarked!

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Eggan Helmi 2025-04-03 06:42:21

Would love to see a video tutorial linked in the article.

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Živojinović Alyssa 2025-04-03 06:42:21

The content is accurate but a bit dry. More engaging writing would help.

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Russell Tracey 2025-04-03 06:42:21

Exactly what I was looking for. No fluff, just facts.

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Oliver Vladimir 2025-04-03 06:42:21

The article could benefit from a troubleshooting section.

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Røsand Eevi 2025-04-03 06:42:21

Clear and to the point. Great job!

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Bouchard Leidemere 2025-04-03 06:42:21

I expected more details on the science behind it.

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Latt Slavko 2025-04-03 06:42:21

Very useful for my electronics project. Thanks!

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Perez Célestin 2025-04-03 06:42:21

The article is good, but the website layout is a bit cluttered.

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Slawa Mason 2025-04-03 06:42:21

Helped me fix my LED circuit. Much appreciated!

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Muller Dean 2025-04-03 06:42:21

A bit too basic for my level, but good for beginners.

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Picard Ömür 2025-04-03 06:42:21

The tips on identifying the cathode are spot on!