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LED Positive and Negative Polarity Identification
By Pins: The longer pin is the positive (+) pole, and the shorter pin is the negative (-) pole.
By Internal Structure:
Looking at the LED internally, the larger electrode (big head) corresponds to the negative (-) pole, while the smaller electrode (small head) corresponds to the positive (+) pole.
klompenrunner
Reviewed in the United States on March 16, 2025
These are good. Difuse light. Long pin is plus, short minus.I removed one star as the 3rd LED I tested was scratched up pretty badly,very visible wne the LED is on.
Tech Reviewer
Reviewed in the United States on March 14, 2025
Making an LED cube project so I needed some bulk LEDs, this supplier has worked out well for my needs
Signus
Reviewed in the United States on March 10, 2025
This review is for the "1000 Pcs 5mm Led Light Emitting Diode Kit, Assorted Colors - White, Red, Yellow, Green, Blue, Each 200PCS, Multi-Colored Led Circuit Kit for Science Projects and Experiments Jehbanne."All the LEDs I received work as described. Voltages are as specified in the listing and illumination is good. These LEDs are a great addition to my parts for diy and breadboarding projects- even for some of my engineering designs as I like to use generic LEDs for "worst-case" scenarios.Worthy of recommendation. Great price and decent manufacturing for budget LEDs.
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