Best HDI PCB Prototype 4+n+4 structure HDI PCB

Product Information
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High-density interconnects (HDI) PCB is an integral part of the PCB and electronics industries. Electronic components have become smaller and lighter but require increasing performance. To adapt to this situation, you need to pack more features into a smaller area. This is exactly what the HDI PCB provides.

Compared with conventional PCBs, HDI PCB has a higher density per unit of the circuit. They use a combination of buried and blind holes, as well as micro-holes with a diameter of 0.006” or smaller micro vias.
The strict tolerances involved in using HDI printed circuit boards mean that you need to work with experienced suppliers. Even small defects or layout accidents can lead to serious problems. As a leading supplier of HDI printed circuit boards, Rocket PCB offers top-notch circuit boards with a much higher circuit density than conventional PCBs.

HDI Product Details

Want to know more product information? We will provide you with detailed pictures and detailed content of HDI PCB fabrication in the following section for your reference. Rocket PCB has a scientific and perfect procurement chain. To guarantee the quality from the source, we always adhere to the selection of high-quality materials to produce all kinds of printed circuit boards. They are highly safe that have passed the national compulsory certification. We provide a worry-free buying experience for customers. Rocket PCB has professional production workshops and great production technology. HDI PCB we produce, in line with the national quality inspection standards, has a reasonable structure, stable performance, good safety, and high reliability. It is also available in a wide range of types and specifications. Customers' diverse needs can be fully fulfilled.

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HDI PCB capability table

Items	Capability
Circuit Constructions	Single-Sided / Double-Sided / Multi-Layer / Flex / Rigid Flex
Material	FR-4 / Rogers / Arlon / Polymide / Aluminum / Kapt/etc
Copper weights	0.5oz~10oz
Layer Count	1-64 layers
Stack up	Control Dielectric/Control Impedance/TDR Testing
Surface finish	Lead-Free/HASL/ENIG/ENEPIG/Hard Gold/Wire Bonded Gold/Immersion Silver/OSP/selective osp
Vias	Blind-buried/via-in-pad/POFV/Filled-vias/epoxy resin filled vias
Advanced tech	Embedded /Laser drill/Multi-level cavity/Build-up HDI/Long-short staged gold finger/Hybrid/metal-core/press-fit
1+n+1	Yes
1+1+n+1+1	Yes
2+n+2	Yes
3+n+3	Yes
4+n+4	Yes
Any-layer	12L
Laser孔径 max	0.15mm
Laser孔径 min	0.075mm
Laser盲孔厚径比 max	0.8:1(Depth included copper thickness)
Laser盲孔电镀填孔	Yes (laser via size 4-5mil, priority 4mil)
Laser盲孔树脂塞孔	Yes
Stack via	5step
Stagger via	5step
Filling via dimple value 电镀填孔凹陷深度最大	<=15um
Laser via capture pad size 外层laser PAD标准 (外层laser孔+两边ring)	0.25mm
Laser via hole size Laser孔径标准	0.1mm
Laser via land pad size 对应内层PAD	0.25mm
Minimum spacing between laser hole edge to laser hole edge (Same Net) laser孔边到Laser孔边最小间距 (同一网络）	0.1mm
Minimum spacing between laser hole edge to laser hole edge (Different Net) Laser孔边到Laser孔边最小间距 (不同网络）	0.25mm
Max finished hole size for blind & buried via	0.3mm (max) l(corresponding drilling tool size 16mil)
Minimum spacing between laser hole edge to buried drill hole edge (Same Net) Laser孔壁到埋孔孔壁最小间距（同一网络）	0.1mm
Minimum spacing between laser hole edge to buried drill hole edge (Different Net) Laser孔壁到埋孔孔壁最小间距（不同网络）	0.2mm
Minimum spacing between laser hole center to board edge (Inner layer) Laser孔中心到板边最小间距（内层)	0.35mm
Minimum spacing between laser hole center to board edge (Outer layer) Stamped/Routed edge Laser孔中心到板边最小间距（外层)	0.3mm
Minimum spacing between through VIA hole edge to PADs (Outer layer) (Different Net) 通孔孔壁到外层PAD最小间距(不同网络)	0.18mm
Min thickness to Internal layer 内层板最小厚度	0.05mm
Max. dielectric thickness 最大介质层厚度	0.1mm
Min. dielectric thickness 最小介质层厚度	0.05mm