I'm fairly new to electronics, and I was recently looking at some LEDs listed for sale online. Some LEDs were mounted on "star pcb":
From the picture, it looks like there are 6 connections. I'm pretty sure the LEDs just have 2 (an anode and a cathode).
Can someone explain the purpose of the other connections, or what the star shape pcb is used for? I tried googling, but all I could seem to find were more star pcb items for sale.
Answer
I assume you are looking at a unit such as this: Digikey link. The "circuit board" is actually a heat-sink heat-spreader to draw away the heat from the LED module in the middle. As you can see in the photograph, half of the pads are labeled + (anode) and the other half are labeled - (cathode). So yes, there are actually only two terminals.
[Edit: changed "heat-sink" to "heat-spreader", acknowledging Conner Wolf's correction.]
No comments:
Post a Comment