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  •  07/11/2022

Getting more in less with SiP Ep.2 : Advanced Packaging Technology on a Miniature Scale


In the past, most semiconductor IC components and chips were packaged using common IC packaging technologies, such as single chip in BGA (Ball Grid Array). However, in response to the demand for 5G, Internet of Things, self-driving cars, smart cities, telemedicine and other applications, these conventional IC component packaging technologies alone can no longer meet today's high-speed computing and transmission needs.

Because of this, advanced System-in-Package (SiP) technologies such as Double-side Molding and Fan-in/Fan-out have become indispensable for the information and communication products market. Leading semiconductor companies such as TSMC, Intel and Samsung are accelerating the deployment of integrated packaging technology. How to make a breakthrough in technology to achieve a balance between cost and performance have become one of the most important development strategies for the industry in the future.

In response to this trend, USI has been investing in system-in-package technology since 2008, such as high-density SMT, molding, and shielding. 


High-Density Surface-Mount Technology (SMT)

The number and spacing of components in the PCB design is the main key to the module size., The common component spacing in the industry is at least 150μm in the SMT process. USI has reached 50μm, less than an adult hair's diameter. It shows that USI is leading in surface mount technology precision. Compared to the 10x10 array, over 70% of the board size is significantly reduced, 40% of which is due to breakthroughs in lamination technology.




Get to Know More: USI SiP Technology - High Density SMT


Molding & Shielding

Molding technology is a key distinguish in advanced SiP technology compared with traditional board-level assembly processes, which can effectively protect components in high-density packages with small pitches, thereby maximizing space utilization. 

Since the high-density SMT process uses miniaturized components, the connection with the substrate is significantly reduced in solder connection. In order to improve the reliability and impedance of the components and to avoid the influence of external humidity, high temperature and pressure, the molding process allows the complete components to be sealed and wrapped on the substrate. In highly integrated system packaging, outsourcing and testing (OSAT) can achieve about 100 components into a module, while USI can accommodate up to 900 components.




On the other hand, to seal hundreds of electronic components, shield is the must to isolate the signals between the components to avoid electromagnetic interference. Conformal and compartment shielding developed by USI can achieve less than 2μm, freeing up more than 17% of the space for other components and shielding 40-50 dB of electromagnetic interference.

The reduction of thickness by 150μm is a big step forward for such tiny modules which every space count. In addition, the top and side gaps between the molding and the component can be reduced as well, further reducing the thickness and area. 

Get to Know More: USI SiP Technology – Molding 、 USI SiP Technology – Shielding


Competitive Skill in the Race of the Miniaturization World 

Followed the evolution, technology products emphasize more the combination of lightweight and functionality, so space availability is even more scarce. Through the System-in-Package process, the overall board area can be saved up to about 30-40%. With the heterogeneous integration advantages of miniaturization and modularization, integration of the circuit board, antenna, and mechanism is way more flexible, and it is what the IC process cannot achieve. 

Breakthroughs in advanced packaging technologies are affecting the global supply chain and changing the industry. With the advent of the era of miniaturization, miniaturization technology has become indispensable competitiveness. USI has been laying the groundwork for WiFi products since the beginning. With years of experience in RF and wearable devices, as well as continuous technological breakthroughs, USI is ready to meet this worldwide "Miniaturization Battle" 
 

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