What materials are used to make the aluminum substrate for LED bulbs?
The aluminum substrate of the LED bulb is a metal-based copper-clad laminate with outstanding heat dissipation function. Generally, a single panel is composed of a three-layer structure, which is a circuit layer (copper foil), an insulating layer and a metal bottom layer. For high-end applications, there are also plans for double-sided panels, with the structure of circuit layer, an insulating layer, and aluminum base, an insulating layer, and a circuit layer. Very few applications are multi-layer boards, which can be made by bonding general multi-layer boards with insulating layers and aluminum bases.
LED aluminum substrate is PCB, which is also the meaning of printed circuit board, but the material of circuit board is aluminum alloy. In the past, the material of general circuit board was glass fiber, but because LED heats up, the circuit board used in LED lamps is generally aluminum The substrate can conduct heat quickly, and the circuit boards for other equipment or electrical appliances are still glass fiber boards!