12V 24V 220V 18W LED Lamp PCB Electronic Printed Circuit Board

Electronic led pcb printed circuit board 18W Aluminum base bulbs light PCB

Structure of Aluminum PCBs:

The structure of a basic Aluminum PCB is that of a Copper Clad Laminate (CCL) backed with an Aluminum base. A Copper foil and a dielectric layer make up the CCL. The Aluminum base may have an additional Aluminum base membrane as a protection.

1. Copper Foil Layer: Manufacturers generally use the same Copper foil as they use for regular FR-4 boards, unless the applications demand large current carrying capacity. For the latter, they use relatively heavy copper, with thickness varying from 1 to 10 ounces. The inner side of the Copper foil goes through a typical Zinc and Brass plating to improve its peel-off strength, while the top surface undergoes a chemical treatment to prevent oxidation.

2. Dielectric Layer: The thickness of this layer varies from 50 to 200 um, and forms the core technology of the Aluminum PCB. The dielectric layer has excellent thermal conductivity, low thermal resistance, and high electrical insulation properties. It also has excellent anti-thermal aging properties and can withstand thermal and mechanical stress.

The structure of the dielectric layer depends on the application. For instance, Universal Aluminum PCBs use a pre-preg of epoxy glass fiber as a dielectric layer, special Aluminum PCBs use resins of high thermal conductivity, and High-Frequency Aluminum PCBs use a dielectric layer with a prepreg of Polyimide or Polyolefin resin glass fiber.

3. Aluminum Base Layer: This is an Aluminum substrate material acting as the supporting component. Along with high thermal conductivity, the base layer must be suitable for regular mechanical manufacturing processes including cutting, punching, and drilling.

4. Base Membrane: Made of Aluminum, the base membrane protects the outer surface of the base layer from acquiring scratches and during the etching process.

 

 
 

FAQ: 

Q: How can I get a sample to check your quality?
A:  After price confirmation,you can place orders for samples for your testing and evaluation.