4 Layer Controller PCB/PCBA Design
Name: 4 Layer Controller PCB/PCBA Design
Sheet: IT180, F4BM, FR4, FR1-4, etc.
Designable layers: 1-32 layers
Minimum line width and line spacing: 3mil
Minimum laser aperture: 4mil
Minimum mechanical aperture: 8mil
Copper foil thickness: 18-175цm (standard: 18цm35цm70цm)
Peel strength: 1.25N/mm
Minimum punching hole diameter: single side: 0.9mm/35mil
Minimum hole diameter: 0.25mm/10mil
Aperture tolerance: ≤φ0.8mm±0.05mm
Hole tolerance: ±0.05mm
Hole wall copper thickness: double-sided/multi-layer: ≥2um/0.8mil
Hole resistance: double-sided/multi-layer: ≤300цΩ
Minimum line width: 0.127mm/5mil
Minimum pitch: 0.127mm/5mil
Surface treatment: rosin spray tin electric gold, anti-oxidation, chemical gold, carbon oil
Service: Provide OEM service
A 4-layer PCB means that there are 4 layers to route electrical signals: top layer, inner layer 1, inner layer 2, and bottom layer. The top and bottom layers are the outer layers where we place our components and wiring. Inner 1 and Inner 2 are located in the core and are typically used as power planes or for signal routing. So, 4-layer PCB = 3 signal layers + GND layer or 4-layer PCB = 2 signal layers + VCC layer + GND layer.
Name: 4 Layer Controller PCB/PCBA Design
Sheet: IT180, F4BM, FR4, FR1-4, etc.
Designable layers: 1-32 layers
Minimum line width and line spacing: 3mil
Minimum laser aperture: 4mil
Minimum mechanical aperture: 8mil
Copper foil thickness: 18-175цm (standard: 18цm35цm70цm)
Peel strength: 1.25N/mm
Minimum punching hole diameter: single side: 0.9mm/35mil
Minimum hole diameter: 0.25mm/10mil
Aperture tolerance: ≤φ0.8mm±0.05mm
Hole tolerance: ±0.05mm
Hole wall copper thickness: double-sided/multi-layer: ≥2um/0.8mil
Hole resistance: double-sided/multi-layer: ≤300цΩ
Minimum line width: 0.127mm/5mil
Minimum pitch: 0.127mm/5mil
Surface treatment: rosin spray tin electric gold, anti-oxidation, chemical gold, carbon oil
Service: Provide OEM service
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