Starting with September 2022, PCB-ELECTRA has added 4-layer printed circuits with standard materials to its product portfolio.

The printed circuits on 4 layers have the following constructive structure:

1. Copper foil of 18 or 35 microns (basic). After metallization, the final thickness of the tracks will be 35 and 55 microns respectively.

2. Prepreg 7628 - insulating layer between the signal layers - thickness 0.35 mm

3. Copper foil with a thickness of 35 microns

4. Sticlotextolite – insulating material with a thickness of 0.8 mm, TG 150

5. Copper foil with a thickness of 35 microns

6. Prepreg 7628 – insulating layer between the signal layers – thickness 0.35 mm

7. Copper foil of 18 or 35 microns (basic). After metallization, the final thickness of the tracks will be 35 and 55 microns respectively.

The circuit can be covered with screen printing ink (8), of different colors: green, black, white, red, blue, yellow and with different colors of marking ink, for the reference of the components: white, black, red, yellow.

The 4-layer circuits can be delivered individually or in a panel with technological edges, prepared for automatic assembly. The maximum size of the circuits or the panel is 330 mm x 430 mm. The final thickness of the standard circuit with 4 layers is 1.55 mm.

When placing the offer request, please indicate the desired order of the layers (TOP, L2, L3, BOTTOM).

For circuits that do not fit into the standard constructive structure, within the limits of our technical capabilities, we are flexible in changing the constructive structure.