Multilayer Printed Circuit Board Holes Immersion Gold HDI PCB
Circuit Board
As electronic products tend to be multifunctional and complex, the
contact distance of integrated circuit components decreases and the
speed of signal transmission increases.With the increase in the
number of connections and the shortening of the local length of
interpoint circuit. We need the application of high-density line
configuration and microhole technology is required to achieve the
goal. HDI PCB has many technical advantages.
- Design flexibility. HDI boards offer designers more design
flexibility. Designers can take advantage of high component
density, which facilitates faster signal processing.
- Save space. Due to its advanced technical features, HDI board can
easily accommodate more connections on the same board with fewer
layers.
- Suitable for intensive and complex packages. HDI is a good choice
for intensive and complex packages involving high pin count and low
spacing.
- HDI boards meet the growing demand for smaller PCBS. non-HDI boards
require more space and weight, making them difficult to use in many
cases. Similarly, multiple PCBS can be integrated into a single
HDI.
- Signal integrity. The advanced technical features of this kind of
PCB can help improve signal integrity and electrical performance.
1 . Descriptions:
What is a HDI PCB?
HDI stands for High Density Interconnector. A circuit board which
has a higher wiring density per unit area as opposed to
conventional board is called as HDI PCB. HDI PCBs have finer spaces
and lines, minor vias and capture pads and higher connection pad
density. It is helpful in enhancing electrical performance and
reduction in weight and size of the equipment. HDI PCB is the
better option for high-layer count and costly laminated boards.
Regarding the electrical needs of high-speed signal, the board
should have various features i.e. high-frequency transmission
capability, impedance control, decreases redundant radiation, etc.
The board should be enhanced in the density because of the
miniaturization and arrays of the electronic parts. In addition, to
the result of the assembling techniques of leadless, fine pitch
package and direct chip bonding, the board is even featured with
exceptional high-density.
Innumerable benefits are associated with HDI PCB, like high speed,
small size and high frequency. It is the primary part of portable
computers, personal computers, and mobile phones. Currently, HDI
PCB is extensively used in other end user products i.e. as MP3
players and game consoles, etc.
2 . Specifications:
| Name | 1.0mm flexible 12 Anylayer HDI / Optical module board |
| Number of Layers | 12 |
| Quality Grade | IPC 6012 Class 2,IPC 6012 Class 3 |
| Material | EM528K |
| Thickness | 1.0mm |
| Min Track/Spacing | 50um/60um |
| Min Hole Size | Laser 75um; Drilling size 200um |
| Solder Mask | Blue |
| Silkscreen | White |
| Surface Finish | ENEPIG |
| Finished Copper | 12um |
| Production time | 10-21 working days |
| Lead time | 2-3 days |
3. Advantages:
The most common reason for using HDI technology is a significant
increase in packaging density. The space obtained by finer track
structures is available for components. Besides, overall space
requirements are reduced will result in smaller board sizes and
fewer layers.
Usually FPGA or BGA are available with 1mm or less spacing. HDI
technology makes routing and connection easy, especially when
routing between pins.
