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4 Layer Controller PCB/PCBA Design - UGPCB

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4 Layer Controller PCB/PCBA Design

Nume: 4 Layer Controller PCB/PCBA Design

Sheet: IT180, F4BM, FR4, FR1-4, etc.

Designable layers: 1-32 straturi

Lățimea minimă a liniei și distanțarea liniei: 3mil

Deschidere minimă laser: 4mil

Deschidere mecanică minimă: 8mil

Grosimea foliei de cupru: 18-175cm (standard: 18CM35CM70cm)

Coajă de rezistență: 1.25N/mm

Diametrul gaurei minime de perforare: o singură parte: 0.9mm/35mil

Diametrul minim al găurii: 0.25mm/10mil

Toleranță la deschidere: ≤φ0.8mm ± 0,05mm

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Overview of 4-Layer PCBs

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.

Outer Layers: Top and Bottom

The top and bottom layers are the outer layers where components and wiring are placed.

Inner Layers: Inner 1 and Inner 2

Inner 1 and Inner 2 are located in the core and are typically used as power planes or for signal routing.

Configurations of 4-Layer PCBs

There are two common configurations for 4-layer PCBs:

Configuration 1: 3 Signal Layers + GND Layer

In this configuration, three of the layers are used for signal routing, and one layer is used as a ground (GND) plane.

Configuration 2: 2 Signal Layers + VCC Layer + GND Layer

In this configuration, two of the layers are used for signal routing, one layer is used as a power (VCC) plane, and one layer is used as a ground (GND) plane.

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