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Layers
1-6 layers (flex area) and up to 20
Material
Polyimide, FR-4, and FR-4 High-Tg
Board Thickness
Flexible area: 0.05mm – 0.3mm, Rigid area: 0.5mm – 3.2mm
Copper Thickness
1/3 Oz (12 µm) – 2 Oz (70 µm), depends on design and material requirements
Minimum Trace Width/Spacing
3mil/3mil (0.0762mm/0.0762mm) or better, depending on design and materials
Minimum Hole Size
0.2mm (8mil) or larger, depending on layer count
Aspect Ratio
10:1 or better
Max Board Size
400mm x 500mm
Surface Finish
ENIG, Immersion Silver, OSP, HASL, Lead-Free HASL, etc
Solder Mask
Green, Blue, Yellow, Black, Red, White, and other colors
Solder Mask Resolution
4mil (0.1mm) minimum
Solder Mask Registration
±2mil (±0.0508mm)
Silkscreen Color
White, Black, Yellow
Coverlay
Polyimide, with or without adhesive, depending on the application requirements
Plated Through Holes (PTH)
Yes
Blind & Buried Vias (BBV)
Yes
Controlled Impedance
Yes, can be achieved in both rigid and flexible areas
Stiffeners
FR-4, Polyimide, or Stainless Steel, installed to provide support and rigidity when needed
Electrical Testing
Continuity & isolation, impedance control, Hi-Pot, etc.
Mechanical Assembly
Supported
Certification
ISO9001:2015;ISO13485:2016;ROHS,UL 94v0, IPC-600G classll and IPC-6012B classll standard
Purpose: To assure normal production of mutilayer pcb layer stack
If the customer has a stack up, we try to make it according to the customer's stack up.
If the customer has no overlapping structure, we will sugg-est customer to manufacture the muti-layer PCBs according to our material selection.
Definition
- Core: also called copper clad laminate, has two types: single-sided copper foil or double-sided copper foil.
- PP: Prepreg, is used to bond the copper foil and the core in the lamination process.
- Dielectric thickness: the thickness between copper layers is called dielectric thickness, the thickness of PP after lamination, and the thickness of core plate minus copper thickness.
- Base copper thickness: the copper thickness before production, the copper foil used for pressing and the copper thickness of the inner core plate are all called base copper thickness (if there are special processes such as thick copper 2oz ,3oz,4oz, it will be quoted separately).
- Finished copper thickness: the copper thickness of the finished product after production, the thickness of the finished product such as the inner layer after grinding and the outer layer after electroplating surface treatment.
- Flowing glue: In the layer press process, the thickness reduction for filling the gap between the circuit layer and PP is called flowing glue.
- Press-fit thickness: The thickness after press-fit and before electroplating is the plate thickness without electroplating, solder resist and surface treatment.
- Finished thickness: The thickness of finished products, but pay attention to the measuring position of board.
A: Innerlayer core thickness (copper excluded)
B: PP thickness
E: Inner copper foil thickness
F: Outside layer copper foil thickness
X: Finished board thickness
Y: Finished board thickness tolerance
Dfinition of PP: Prepreg, which consists of glass fiber and resin
Definition of PP:
| Film type |
Glue(%) |
Glue flow(%) |
Gel time(Sec) |
Dielectric constant(1MHZ) |
PP thickness(MIL) |
| 1080 |
65 |
35+/-5 |
155+/-20 |
3.9 |
2.8+/-0.5 |
| 2116LR |
53 |
26+/-3 |
140+/-20 |
4.3 |
43+/-0.5 |
| 2116 |
55 |
26+/-3 |
140+/-20 |
4.25 |
45+/-0.5 |
| 2116HR |
58 |
26+/-3 |
140+/-20 |
4.2 |
5.0+/-0.5 |
| 7628LR |
43 |
22.5+/-5 |
125+/-20 |
4.6 |
7.0+/-0.8 |
| 7628 |
45 |
22.5+/-5 |
125+/-20 |
4.5 |
7.5+/-0.8 |
| 7630HR |
50 |
32+/-5 |
130+/-30 |
4.4 |
8.5+/-1.0 |
Precautions
- You can press 3 PP sheets at most.
- Thick copper plates over 2oz cannot use single PP sheet.
- Inter-flow glue of PP: The original thickness of PP will be reduced after pressing, mainly because the glue between PP and PP will be lost.
- Try not to stack 3 PP sheets, which will easily lead to problems in the alignment of the board and leading to the scrapping of the board
Technology need Rigid-flex PCBs
The Rigid-flex PCB is light, thin and compact, especially suitable for the latest portable electronics and high-end medical and military equipment.
Manufacturing threshold
Because Rigid-flex PCB is mostly used in medical and military equipment, it has the strongest protection ability for products which used in harmful environment, it requires the products itself must have both the durability of PCBs and the adaptability of FPCs.
Wide range of applications, large market demands
Rigid-flex PCBs are mainly used in consumer electronics, medical machinery, military equipment, automotive electronics, precision instruments, aerospace, robots and other purposes.
Rigid-flex PCB Technic flow and control points
