4 Layer 3D Rigid PCB Board Fabrication

4 Layer 3D Rigid PCB Board Fabrication

Quick detail:

Rigid PCB and Flexible PCB

Flexible PCB: FPC, also known as flexible circuit boards, can be bent.

Rigid PCB: Rigid printed circuit board, can not bend.

Main rigid PCB material；

High frequency material,most expensive than all

FR-1 ─ ─ phenolic tissue paper, this substrate known as electric wood (FR-2 higher than the economy)

FR-2 ─ ─ phenolic tissue paper,

FR-3 ─ Cotton paper, epoxy resin

FR-4 ─ ─ glass cloth (Woven glass), epoxy resin

FR-5 ─ glass cloth, epoxy resin

FR-6 ─ ─ matte glass, polyester

G-10 ─ glass cloth, epoxy resin

CEM-1 ─ Cotton paper, Epoxy resin (flame retardant)

CEM-2 ─ tissue paper, epoxy resin (non-flame retardant)

CEM-3 ─ glass cloth, epoxy resin

CEM-4 ─ glass cloth, epoxy resin

CEM-5 ─ ─ glass cloth, polyester

AIN ─ aluminum nitride

SiC ─ silicon carbide

Metallic coating on rigid PCB:

Commonly used metal coatings are:

copper

tin

The thickness is usually in the range of 5 to 15 μm

Pewter (or tin-copper alloy)

I.e., solder, typically has a thickness of 5 to 25 μm and a tin content of about 63%

gold

Generally only plated in the interface

silver

Generally only plated in the interface, or the overall silver alloy

Rigid PCB Package: