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Aluminium PCBs are quite popular, especially for applications where the total LED quantity and/or power is high (p.. COBs).
Aluminium is used as the substrate, and the PCB tracks are isolated from it. Different materials are available for different isolation requirements.
This aluminium PCB can be directly attached to the heatsink.
consulte Mais informação: Escolhendo o material laminado PCB certo para o seu projeto
#PCB Materials #LED
Estou pensando que tipo de fotorresistor LDR com resistor dependente de luz é melhor. gl5516 ou 5506 sensor? Alguém pode resumir a principal diferença?
I am getting a PCB manufactured for a project that I am working on. One of the parts, the A4950 motor driver, has a “almofada” on the bottom, which is meant to be soldered to GND of the PCB for thermal dissipation. I was thinking about the prototyping, and I am unsure how I would go about (using a soldering iron), soldering the pad on the bottom.
There is a copper pour over the entire top of the my PCB, which is part of GND net. It turns out that the surface mounted 1W LEDs I’m going to use have the heat slug connected internally to the LED’s +ve terminal. Can I rely on the solder mask to insulate the +ve voltage (~3V ish) from GND? Long term?
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