Now there were many websites have some LEDs listed for sale online. Some LEDs were mounted on “star PCB”.
What is LED star PCB and why LED PCB shape a star?
This post will discuss above question of LED star LEDs.
The questions about LED star PCB
From most of the picture on LED star PCB websites, it looks like there are 6 connections. The LEDs just have 2 (an anode and a cathode).
So what’s the purpose of the other connections, or what the star shape PCB is used for?
The heat of LED star PCB you should know
The LED star PCBs are actually a heat-sink heat-spreader to draw away the heat from the LED module in the middle.
So the next key point is a heat sink.
As a heat sink, should LED star PCB be mounted with a thermal compound onto whatever it’s attached to? Or can it simply be glued to something?
Thermal compound will work much better. You’ll severely limit the effectiveness of the heat sink if you put a layer of glue in between.
LED star PCB that are usually on these needs to dissipate a lot of heat if you want them to last.