How is a PCB made step by step?

PCB Manufacturing Process Steps

1. Step 1: Design and Output.
2. Step 2: From File to Film.
3. Step 3: Printing the Inner layers: Where Will the Copper Go?
4. Step 4: Removing the Unwanted Copper.
5. Step 5: Layer Alignment and Optical Inspection.
6. Step 6: Layer-up and Bond.
7. Step 7: Drill.
8. Step 8: Plating and Copper Deposition.

What is the core of PCB?

The core of a PCB is rigid base material laminated with copper on one or two sides. A CORE is used for manufacturing single sided and double sided boards but is also used in the production of MULTI layer PCBs.

What is the difference between core and prepreg in PCB?

The Difference Between PCB Core vs. Prepreg. Your core is effectively one or more prepreg laminates that are pressed, hardened, and cured with heat, and the core is plated with copper foil on each side. The prepreg material is impregnated with a resin, where the resin is hardened but left uncured.

How are PCB layers bonded?

The outer layers of our multi-layer consist of sheets of glass cloth pre-impregnated with uncured epoxy resin (prepreg) and a thin copper foil. The heat melts and cures the epoxy resin in the prepreg while the pressure bonds the PCB together. …

What is the role of prepreg in a PCB?

The role of the prepreg is to fuse etched cores together or to glue a copper foil to an etched core. You will find a layer of prepreg between each layer of the PCB. The prepreg is not just an important part in the PCB manufacturing process, it is a necessity if the board has multiple layers.

How is fiberglass fabric coated in PCB prepreg?

The fiberglass fabric is coated with resin on a coater, in which it is pulled through a pan filled with a solution of resin in one or more solvents and then through a sequence of metering bars to accurately control the amount of resin that is deposited on the fabric.

Which is the best prepreg thickness for PCB?

Therefore, it is critical to confer with the application engineers of your PCB fabrication company to learn about these limitations. Similar types of prepreg thickness dimensions include GETEK®, Rogers®, FR-406 and FR-408. To obtain the exact prepreg thickness information, confer with the application engineer of your PCB board fabricator.

What are the steps in the PCB manufacturing process?

The process happens in two steps: layer-up and bonding. The outer layer material consists of sheets of fiber glass, pre-impregnated with epoxy resin. The shorthand for this is called prepreg. A thin copper foil also covers the top and bottom of the original substrate, which contains the copper trace etchings.