1206 SMD LED Blue color with Zener Diode This is a Blue SMD LED that pakcage in 1206 SMD LED case. Which make it be a mini blue SMD LED. Normally there will just one single chip inside of blue LED. But in this 1206BC-ZR, please check in the picture as follow, there have two chips inside the package. One is white and conntected with two gold wire, which is blue LED chip. It's the light source of the SMD LED. On the other hand, there have a tinny black chip, which is Zener Diode. What is the Zener diode, why there will have a zener diode and what is it work for? First, zener diode is a special type of diode designed to reliably allow current to flow"backwards" when a certain set reverse voltage, known as the zenner voltage, is reached. For some application, LED might be damaged by high voltage or static electricity. In order to protect the LED, it will be better when we add a zener diode to the inner circuit. Then the zener diode can…
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