PCB Prototype the Easy Way

Full feature custom PCB prototype service.

Help Center
Sending a message
9:00 - 23:00, Mon.- Sun. (GMT+8)
Service hotlines
+86 571 8531 7532

9:00 - 18:00, Mon.- Fri. (GMT+8)

9:00 - 12:00, Sat. (GMT+8)

(Except Chinese public holidays)

Stackup for 4, 6, 8,..., 18 layers Multi-layer laminated structure

4+6+4 HDI stackup Layer buildup/stackup reference

4+6+4 HDI PCB stackup

In the layer structure of a PCB board, there are several important concepts.
PP (Prepreg): Prepreg is a semi-cured sheet, also known as prepreg material, a thin sheet material that impregnated with resin and cured to an intermediate degree. It is mainly used as the bonding material and insulation material for inner conductive patterns of multilayer printed circuit boards. After being laminated with Prepreg, the semi-cured epoxy resin is squeezed out, begins to flow, and solidifies, bonding the multilayer circuit boards together and forming a reliable insulating layer. In the PCB industry, Prepreg can be likened to glue, used to bond several cores together using the lamination method to create multilayer boards.
PP Type:1080(3.1mil), 3313(4.2mil), 2116(5.4mil), 7628(7.7mil).

Core: Core is a rigid material with specific thickness and copper on both sides.
The pressing materials for multilayer boards mainly consist of Prepreg and Core.

The differences between the two are:
- Prepreg is a material used in PCBs, with a semi-solid texture similar to cardboard, while core is a rigid material similar to copper.
- Prepreg functions as both an adhesive and insulator, whereas core serves as the foundational material for PCBs, with entirely different functional roles.
- Prepreg can be flexible, while core cannot be bent.
- Prepreg is non-conductive, whereas core has copper layers on both sides, serving as the conductive medium for the printed circuit board.

In other special cases or Advanced PCBs (you need to choose "Customized Services and Advanced Options" and Custom stackup or Impedance control):
1. If you need custom stackup or control impedance, we will manufacture according to your requirement.
2. After place order,we will calculate whether it meets the requirements based on the stackup , material and impedance information.Also we will confirm with you.

For flexible PCB stackup, please check "Stack-up for FPC".

For rigid PCB, in response to customer demand, PCBWay has added a variety of laminate structures to our products (currently, we have added 301 and will continue to update them), which can greatly satisfy product structural design and impedance requirements.

Contact Us!

Our customer service
ready for your PCB

+86-571-85317532

quotesI am impressed with the quality of the boards, the delivery time and responce to all my questions. Best price excellent service and speedy delivery. When I need another board I will certainly use this supplier. "

-Bill Robinson Company

quotesспасибо за платы! платы очень хорошего качества. надежный продавец. оперативно отвечал на вопросы. заказ выполнили и отправили очень быстро.Заказываю платы не в первый раз - как всегда только лучшие впечатления. 5+++. 4 числа отправил файлы 26-го забрал на почте в Москве."

-FVL. SKU Company
PCB standard stackup Total: 301
Friendly Reminder: PCBWay supports customers to customize structures, and will continue to increase the structure diagrams.
4 Layers Total: 112
View all
1 4-layer PCB
Thickness: 2.4MM
Outer Copper: 1OZ
Inner Copper: 1OZ
Inner layer Residual copper ratio: 70%
Layer Material Thickness
(mm)
Thickness after lamination
L1-CU Outer Copper 0.5OZ 0.0175
PP 2116 RC58%
DK:4.27
0.1300 0.1195MM
L2-CU Inner Copper 1OZ 0.0350
CORE 2MM (With Copper)
DK:4.6
1.9300
L3-CU Inner Copper 1OZ 0.0350
PP 2116 RC58%
DK:4.27
0.1300 0.1195MM
L4-CU Outer Copper 0.5OZ 0.0175

Finished PCB Thickness: 2.37mm, tolerance: ±10%

Inner layer Residual copper ratio > 60%, it is suitable to choose a lamination structure with 70% inner layer Residual copper ratio.

2 4-layer PCB
Thickness: 2.4MM
Outer Copper: 1OZ
Inner Copper: 1OZ
Inner layer Residual copper ratio: 50%
Layer Material Thickness
(mm)
Thickness after lamination
L1-CU Outer Copper 0.5OZ 0.0175
PP 7628 RC46%
DK:4.56
0.1960 0.1785MM
L2-CU Inner Copper 1OZ 0.0350
CORE 1.94MM (With Copper)
DK:4.6
1.8700
L3-CU Inner Copper 1OZ 0.0350
PP 7628 RC46%
DK:4.56
0.1960 0.1785MM
L4-CU Outer Copper 0.5OZ 0.0175

Finished PCB Thickness: 2.43mm, tolerance: ±10%

40% < Inner layer Residual copper ratio ≤ 60%, it is suitable to choose a lamination structure with 50% inner layer Residual copper ratio.

3 4-layer PCB
Thickness: 2.4MM
Outer Copper: 1OZ
Inner Copper: 1OZ
Inner layer Residual copper ratio: 30%
Layer Material Thickness
(mm)
Thickness after lamination
L1-CU Outer Copper 0.5OZ 0.0175
PP 7628 RC46%
DK:4.56
0.1960 0.1715MM
L2-CU Inner Copper 1OZ 0.0350
CORE 1.94MM (With Copper)
DK:4.6
1.8700
L3-CU Inner Copper 1OZ 0.0350
PP 7628 RC46%
DK:4.56
0.1960 0.1715MM
L4-CU Outer Copper 0.5OZ 0.0175

Finished PCB Thickness: 2.42mm, tolerance: ±10%

Inner layer Residual copper ratio ≤ 40%, it is suitable to choose a lamination structure with 30% inner layer Residual copper ratio.

4 4-layer PCB
Thickness: 2.0MM
Outer Copper: 1OZ
Inner Copper: 1OZ
Inner layer Residual copper ratio: 70%
Layer Material Thickness
(mm)
Thickness after lamination
L1-CU Outer Copper 0.5OZ 0.0175
PP 2116 RC58%
DK:4.27
0.1300 0.1195MM
L2-CU Inner Copper 1OZ 0.0350
CORE 1.6MM (With Copper)
DK:4.6
1.5300
L3-CU Inner Copper 1OZ 0.0350
PP 2116 RC58%
DK:4.27
0.1300 0.1195MM
L4-CU Outer Copper 0.5OZ 0.0175

Finished PCB Thickness: 1.97mm, tolerance: ±10%

Inner layer Residual copper ratio > 60%, it is suitable to choose a lamination structure with 70% inner layer Residual copper ratio.

5 4-layer PCB
Thickness: 2.0MM
Outer Copper: 1OZ
Inner Copper: 1OZ
Inner layer Residual copper ratio: 50%
Layer Material Thickness
(mm)
Thickness after lamination
L1-CU Outer Copper 0.5OZ 0.0175
PP 2116 RC58%
DK:4.27
0.1300 0.1125MM
L2-CU Inner Copper 1OZ 0.0350
CORE 1.6MM (With Copper)
DK:4.6
1.5300
L3-CU Inner Copper 1OZ 0.0350
PP 2116 RC58%
DK:4.27
0.1300 0.1125MM
L4-CU Outer Copper 0.5OZ 0.0175

Finished PCB Thickness: 1.96mm, tolerance: ±10%

40% < Inner layer Residual copper ratio ≤ 60%, it is suitable to choose a lamination structure with 50% inner layer Residual copper ratio.

6 4-layer PCB
Thickness: 2.0MM
Outer Copper: 1OZ
Inner Copper: 1OZ
Inner layer Residual copper ratio: 30%
Layer Material Thickness
(mm)
Thickness after lamination
L1-CU Outer Copper 0.5OZ 0.0175
PP 7628 RC46%
DK:4.56
0.1960 0.1715MM
L2-CU Inner Copper 1OZ 0.0350
CORE 1.5MM (With Copper)
DK:4.6
1.4300
L3-CU Inner Copper 1OZ 0.0350
PP 7628 RC46%
DK:4.56
0.1960 0.1715MM
L4-CU Outer Copper 0.5OZ 0.0175

Finished PCB Thickness: 1.98mm, tolerance: ±10%

Inner layer Residual copper ratio ≤ 40%, it is suitable to choose a lamination structure with 30% inner layer Residual copper ratio.