Double sided PCB is popular Type of PCB or Printed Circuit Board
Characteristics of Double-Layer PCB
Double-layer PCB (Double-Sided PCB) features conductive copper traces on both sides of the board, offering several advantages:
- Increased Circuit Density: Components and traces can be placed on both sides, allowing for more complex circuit designs.
- Improved Electrical Performance: Enables shorter paths for signals, reducing resistance and enhancing electrical performance.
- More Design Flexibility: With vias connecting both sides, designers can optimize circuit layouts for functionality and performance.
- Medium Cost: While more expensive than single-layer PCBs, it remains cost-effective for many applications compared to multilayer PCBs.
- Widely Used in Various Industries: Suitable for applications requiring more complex circuitry than single-layer boards but without the high cost of multilayer PCBs.
Double Layer PCB
Manufacturing Features of Double-Layer PCB
- Base Material: Commonly FR4 (fiberglass), but also available in CEM-3, aluminum-based, and ceramic-based substrates.
- Copper Foil Thickness: Standard options include 1oz (35µm), with alternatives such as 0.5oz (18µm), 2oz (70µm), or even thicker for high-power applications.
- Vias and Plated Through-Holes (PTH): Used to connect the two copper layers, allowing interlayer signal transmission.
- Surface Finish Options: Includes HASL, ENIG, immersion silver, OSP, and other treatments to enhance solderability and longevity.
- More Complex Processing: Requires precise drilling, via plating, and alignment to ensure proper connectivity between the two layers.
Application Fields of Double-Layer PCB
Double-layer PCBs are widely used across different industries due to their enhanced capabilities and reasonable cost:
- Industrial Control Systems: Used in automation, motor controllers, and power management systems.
- Consumer Electronics: Found in gaming consoles, TVs, audio systems, and other home electronics.
- Automotive Electronics: Used in infotainment systems, sensors, and engine control modules.
- Medical Devices: Applied in diagnostic and monitoring equipment.
- Telecommunications: Used in networking devices such as routers, switches, and signal amplifiers.
- Power Supplies: Found in DC-DC converters, UPS systems, and high-efficiency power modules.
SCSPCBA’s Double-Layer PCB Manufacturing Capabilities
| Double-Layer PCB Item | Double-Layer PCB Capability | ||
|---|---|---|---|
| Number of Layers | 2 layers | Via Types | Plated Through-Hole (PTH) |
| Max Board Size | 1200mm × 600mm (depending on factory capability) | Solder Mask Colors | Green, Blue, White, Black, Red, Yellow |
| Min Board Thickness | 0.4mm | Final Tolerance | ±0.1mm |
| Max Board Thickness | 3.2mm | Warping | ≤0.75% |
| Base Material | FR4, CEM-1, CEM-3, Paper-based (FR1, FR2), Aluminum-based | Hole Copper Thickness | ≥20µm |
| Copper Foil Thickness | 0.5oz (18µm), 1oz (35µm), 2oz (70µm), customizable | Testing Method | Flying probe test, test jig |
| Min Line Width/Spacing | 0.1mm/0.1mm (4mil/4mil) | Surface Finish | OSP, HASL, Lead-free HASL, ENIG, Immersion Silver |
| Min Drilled Hole Diameter | 0.2mm (8mil) | Plugging Visa Capability | 0.2-0.8mm |
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