Why Use High-Density Interconnect PCB?
Understanding HDI (High-Density Interconnect) PCBs
While prototyping, you can choose from a wide range of PCBs – from one-sided, simple PCBs, to highly complex boards having multiple sides. Usually, the simplest PCBs are either those with copper tracks, or those that have interconnected components on only a single surface. The latter type of PCB is called single-sided or one-layered PCB.
However, if you wish to manufacture more complex circuit boards, you will probably require HDI PCBs. Compared to conventional PCBs, their High-Density Interconnect counterparts possess greater wiring densities. HDI PCBs have numerous advantages, such as better connection pad densities, smaller VIAs, and thinner spaces.
Types of HDI PCBs
Before we delve deeper into the many benefits of HDI PCBs compared to regular ones, let us briefly mention the different types of HDI PCBs that are available to circuit board designers:
- Stacked VIA PCBs
- Stacked micro-VIA PCBs
- Staggered VIA PCBs
- Staggered Micro-VIA PCBs
- VIA in-pad PCBs
Any of these HDI PCB variations can prove beneficial for projects that require complex wiring but are also pressed for size.
Benefits of HDI PCBs
High-Density Interconnect technologies are quickly becoming the go-to for PCBs with greater efficiency, durability, and portability. With HDI, you can create PCBs that are smaller and lighter, but, simultaneously, faster and more efficient. This is achieved by leveraging buried and blind VIAs that, like we mentioned earlier, can be stacked, staggered, or even connected with micro-VIAs.
Thanks to HDI PCB technology, users can now benefit from better functionality, and denser QFP and BGA packages, in smaller and more portable consumer products. Moreover, HDI technology ensures minimal heat-induced stress.
Let us now explore the many benefits of HDI PCBs:
An HDI PCB is immensely compact. This compactness, coupled with the greater wiring capacity, makes an HDI PCB the perfect choice for any engineer wanting a small circuit board offering a large output. This means that you can now utilize a smaller board without having to make quality compromises. Since a large proportion of consumers look for small devices, an HDI PCB can offer you a significant designing advantage.
2) Allows the incorporation of more components
Using HDI technology, designers can now add a greater number of components to more compact boards, since an HDI PCB allows you to integrate components on either side of its board.
3) Greater battery life
Since HDI PCBs consume less power compared to traditional PCBs, they have better battery lives than many other battery-powered or handheld devices.
4) Greater strength
An HDI PCB is more rugged and solid, which translates to more strength as well as limited perforations.
5) Greater device life
Compared to regular PCBs, an HDI PCB has lower levels of thermal degradation, which means that they can last longer.
6) Better density transmission
With an HDI PCB, computation and transmission in space-restricted regions can be performed with greater densities and efficiency. This means that smaller consumer products like aerospace equipment, smart-phones, medical equipment, and military devices can now be created far more easily.
7) Higher transmission reliability
This advantage particularly stands out when using smaller QFP or BGA packages in applications and designs – especially when your designs have reached the mass production point. With an HDI PCB, you can now accommodate denser QFP and BGA packages than you could with older technologies.
8) Lower heat transfer
Since heat needs to cover lower distances before escaping HDI PCBs, the overall heat transfer is lower. Moreover, an HDI PCB is associated with lower thermal expansion stress, which means it has a longer life compared to older PCB models.
9) Managed conductivity
Based on your specific board design can fill VIAs with non-conductive or conductive materials in order to ease transmission between the components.
You can also benefit from better functionality, since VIA-in-pad and blind VIAs let components stay closer together. This leads to reduced component-to-component transmission range, thereby resulting in fewer crossing delays, lower transmission times, and greater signal strength.
10) Smaller Form Factors
Like we previously discussed, if you are looking to save space, you will not be able to do much better than HDI, since an HDI PCB can reduce the quantity of required layers. For instance, if you are currently using a traditional through-hole PCB with 8 layers, you can now replace it with an HDI via-in-pad PCB with just 4 layers. This means that you will now have a PCB that is smaller in size, containing VIAs that are pretty much invisible.
11) Laser-drill technology
This technology can transform a PCB into a sophisticated electronic circuit. The laser-drill manufacturing style means that smaller boards can now be used, providing the boards with greater resistance to heat.
Going with a High-Density Interconnect PCB gives you the chance to take your technological game to an unmatched standard. Not only are HDI PCBs cost-effective, but they can endure greater frequencies, and are excellent for mobile devices like tablets, cell phones, and laptops. All in all, you can create products that offer higher efficiency and durability in a smaller package, without any compromise on performance or design.
If you are looking for more detailed information on HDI PCBs, do not hesitate to reach out to us and know more about this game-changing PCB technology.