Multilayer printed circuit board manufacturing in China
Number of layers
up to 40 layers
Hole size
0.08mm
Line width and spacing
2mil/2mil
HDI extension
4+N+4
Low CTE
14-18 ppm/°C
HDI printed circuit boards have one or more of the following characteristics:
- Through-holes and recessed holes
- Through transitions from surface to surface
- At least two layers with through holes
- Paired Layer Construction
- Passive substrate designs that have no electrical connection
- Alternative coreless construction designs with pairs of layers
The tight tolerances involved in working with HDI multilayer PCBs mean you need to partner with an experienced supplier, and as a leading supplier of HDI multilayer PCBs, YPCB can supply high quality boards that have significantly higher circuit density than your traditional PCBs.
| Items | Possibilities |
|---|---|
| Quality level | Standard IPC 2.3 |
| Number of layers | 1-40 |
| Ordered Quantity | 1pc – 10000+pcs |
| Creating layers | 4+N+4, connection of any level |
| Assembly time | 4 days – 5 weeks |
| Material | FR4 (140Tg, 170Tg, 180Tg), FR-406, FR-408, 370HR, IT180A, Polyimide, Rogers 4350B/3003/4003C/5880, Taconic, Teflon, etc. |
| Board thickness | 0.2 mm-3.0 mm |
| Copper mass (ready) | 0.5-4 oz |
| Minimum trace/interval | 2mil/2mil |
| Solder mask color | White, Black, Green, Blue, Red, Yellow, Orange, Purple, Matte Green, Matte Black |
| Silkscreen color | White, Black, Yellow |
| Surface cleanliness | Bare Copper, Lead Free Hasl, ENIG, ENEPIG, Gold Fingers, OSP, IAG, ISN, etc. |
| Minimum annular ring | 4 mil |
| Minimum hole diameter | 0.08 mm |
| Other methods | Entry pad, rear drills, recessed condenser, combination of flexible and rigid connection |
| HDI growth | Micro transitions | Mass production | Small-medium batch | Prototype | Accessible |
|---|---|---|---|---|---|
| 1+Н+1 | Blind vias | Yes | Yes | Yes | 4 layers+ |
| 2+Н+2 | Blind/Buried/Staggered Via Holes | Yes | Yes | Yes | 6 layers+ |
| 2+Н+2 | Blind/Buried/Staggered Via Holes | Yes | Yes | Yes | 6 layers+ |
| 3+Н+3 | Blind/Buried/Staggered Via Holes | Yes | Yes | Yes | layers+ |
| 3+Н+3 | Blind/Buried/Staggered Via Holes | Yes | Yes | Yes | layers+ |
Special Techniques
Back Drilling
Impedance Control
Control the impedance value of the conductor on the high-speed printed circuit board within a certain range according to the data transmission requirements.
Via In Notepad
Through Hole in Pad is a process that is widely used to implement high-density interconnect technology. It refers to plated holes and can be simply understood as a viable hole in a BGA pad.
HDI Multilayer Printed Circuit Board Costs
The cost of HDI multilayer PCBs depends on many factors. Consider the following to help you set your budget and ensure maximum cost effectiveness when ordering your PCB:
The type, microvias, or vias you choose for your HDI PCB will affect its cost, as will the number of these elements you need. Smaller vias are more expensive than larger ones due to the higher precision required. Of course, increasing the number of vias can also increase the price.
The type of stackup you need will also affect the cost. A high-density 2+N+2 layout is more complex than a 1+N+1, so it will be more expensive. The extra layers add to the cost. You should aim for the most cost-effective and efficient layer count.
You may have several material options for your board. Base materials may be FR4, metal, fiberglass, or others depending on the application. For surface finishes, you can choose between ENIG, HASL, copper, silver bath, gold, and others. ENIG is the most common for HDI due to its flatness and solderability.
The number of layers and the types of Via structures determine the number of successive laminations required. Although more laminations mean more processing time and higher costs, adding them can improve product performance and cost effectiveness.
There may also be cost differences between stacked and dual configurations. Stacked vias can be filled with copper, but dual microvias cannot. Filling the vias means more material and time required to complete the project.
You should aim to determine the site size in advance to help reduce costs. Knowing the correct site size will help you plan your design effectively and cost-effectively.
If you request an expedited PCB, you may incur additional costs due to the additional resources required to fulfill the rush order. Sometimes unexpected situations that get out of control are unavoidable, but planning orders in advance can increase cost efficiency. YPCB offers fast turnaround times and responsive customer service.
The partners you choose to work with also have a significant impact on the cost of your HDI PCB. You want to choose a supplier with competitive pricing that can also efficiently deliver high-quality products to ensure cost effectiveness. It is better to order a high-quality product once than to have to deal with repairs or replacements after the order.
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