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0.2-5.0mm Thinkness Yellow Oil Double Sided PCB Gold Finish Structure
Product Details:
| Place of Origin: | China |
| Brand Name: | xingqiang |
| Certification: | ISO 9001 / RoHS /UL / IATF 16949 (automotive) |
| Model Number: | Varies by goods condition |
Payment & Shipping Terms:
| Minimum Order Quantity: | Sample,1 pc(5 square meters) |
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| Price: | Based on Gerber Files |
| Delivery Time: | NA |
| Payment Terms: | ,T/T,Western Union |
| Supply Ability: | 100000㎡/Month |
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Detail Information |
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| Product: | Double Sided PCB | Color: | Yellow |
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| Materila: | FR4 | Minimum Line Space: | 3mil |
| Pcba Service: | Support | Max Board Size: | 528*600mm |
| Pcb Standard: | IPC-A-610E | Surface Finishing: | HASL/OSP/ENIG |
| Production Request: | Gerber Or BOM List | Board Thinkness: | 1.6/1.2/1.0/0.8mm Or Customized |
| Highlight: | Yellow Finish Double Sided PCB,2 Layer Circuit Board 1.2mm Thinkness |
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Product Description
A double-sided PCB (Printed Circuit Board), also commonly referred to as a two-layer PCB, is a type of printed circuit board that features conductive copper layers on both sides of a non-conductive insulating substrate. Unlike single-sided PCBs (which only have a conductive layer on one side), its core design allows for circuit traces, components, and interconnections to be arranged on two opposing surfaces, enabling more complex circuit functionality while maintaining a relatively compact form factor.
Key Characteristics & Construction :
A double-sided PCB is typically constructed from a core material, most commonly FR-4, which is a fiberglass-reinforced epoxy laminate. This insulating substrate is clad with a layer of copper on both sides.
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Vias: The defining feature of a double-sided PCB is the use of vias, which are small, plated through-holes that create an electrical connection between the circuit traces on the top and bottom layers. This "bridge" allows for a much more flexible and intricate routing of signals, as traces can cross over each other without shorting.
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Layers: The board has a simple stack-up: a bottom copper layer, the insulating substrate, and a top copper layer. Additional layers like a solder mask (to protect traces from oxidation and prevent solder bridges) and silkscreen (for component labels and markings) are applied to both sides.
Manufacturing Process :
The manufacturing process for a double-sided PCB involves several key steps:
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Design & Layout: The circuit is designed using specialized software, with careful consideration for the placement of components and the routing of traces on both sides.
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Drilling: Holes for components and vias are drilled through the board.
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Plating: A crucial step for double-sided boards is electroplating, which deposits a thin layer of copper into the drilled holes to form the vias, ensuring electrical connectivity between the two sides.
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Imaging & Etching: A photoresistive film is applied to both sides, and a UV light exposes the circuit pattern. The exposed areas harden, and the unexposed copper is chemically etched away, leaving only the desired circuit traces.
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Soldermask & Silkscreen: The protective solder mask and silkscreen layers are then applied to both sides of the board.
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