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What is ABF PCB?

The Ajinomoto Group does not only offer a component of computers, it is the heart of most personal computers in the world. ABF stands for Ajinomoto Build-up Film. Also, this film comprises a series of film dielectrics. This thin film of dielectrics offers electrical insulation of circuit substrate for high-performance CPUs.

ABF PCB is a major component in chip manufacturing. Since the advent of ABF PCB, it has been popularly used in chip manufacturing. Substrates that comprise ABF film are usually found in base stations, personal computers, and routers.

ABF has a long standing history which starts in the 1970s. Also, ABF was first integrated in personal computers in the1990s. It has continued to evolve since then. The ABF substrate is a major component in chip manufacturing.

The Challenges in the ABF PCB Market


ABF simply refers to Ajinomoto Buildup Film. Moving forward, the ABF PCB market will keep growing with increase in revenue as a result of strong demand for 5G and servers. Also, the strong demand for high-performance computing (HPC) and graphic processing units (GPU) from the automotive industry contributed to this increasing revenue.

Goldman Sachs claimed that the aggregate demand for the ABF market should be a CAGR of 28 percent. Furthermore, there is a short supply of ABF substrates. The increasing demand and supply chain issues contribute to the shortage of ABF PCBs. Also, increasing number of layers and larger package sizes for these high-tech products contribute to this shortage.

In the long run, these bigger packaging sizes lead to fewer packages for each ABF substrate. Also, ABF PCB manufacturing involves build-up layer. Therefore, any defect in a layer can jeopardize the final outcome of the whole substrate. With these factors, this makes yield control more crucial.

Yield control is an important project that must account for all the steps involved in the ABF process. Also, ABF PCB suppliers have depended on the ability to repair RDL defects to improve yield. However, high-performance chips that result in smaller sizes of RDL will make repairing RDL defects a challenge.

Intel revealed that an added challenge of ABF PCB manufacturing is that the films are decentralized. For instance, capacitors, a major element of the ABF substrate, are widely used for decoupling.

What does an ABF PCB Offer?

The Ajinomoto build-up film (ABF) substrate is one of the most crucial components in manufacturing processing units. In today’s world, semiconductor-based processing units are now more highly integrated to get to nanometer processes. This integration has complicated the information of interconnection.

Furthermore, interconnecting electronics to system level and board is more popular on the millimeter scale.  Therefore, to achieve these interconnections, most major semiconductor manufacturers must integrate an ABF. Furthermore, ABF functions as a bed within the device package. Also, it comprises several layers of microcircuits that interface between the nanoscale CPU and PCB.

The Ajinomoto Group designs the thermosetting film that offers insulation to the processing unit. Also, this film features crucial properties like low thermal expansion and high durability.

Impact of ABF PCBs on Semiconductors Manufacturing

Semiconductors are the basis of ICT infrastructure. Also, downsizing semiconductor and high-level multifunctional performance will allow smarter cell phones and some related devices. Furthermore, it will enable functions for safety, communication, and control of several devices in home and automobiles.

In addition, the Ajinomoto Group keeps improving its ABF technology. Also, it specialization will help to drive further downsizing and as well as spread of semiconductors. ABF is crucial in several sectors. Therefore, its evolution will improve the society.

ABF substrate is a crucial component for chip making. Also, it is the most recent bottleneck for electronic companies experiencing semiconductor shortages. The ABF substrate is part of the packaging that shields some chips that need to power your car or computer.

Most advanced semiconductors in the world can’t function without these substrates. Therefore, whole giant companies such as Intel Corp spend billions to reduce chip shortages, the lack of ABF substrate could hinder manufacturing. As a result of limited capacity, there could still be supply constraints.

Most semiconductor companies such as Nvidia and AMD rely on ABF substrates to manufacture the world’s most powerful chips. However, substrate manufacturers are reluctant to invest in capacity due to the money-losing slumps they experienced in the past.

Furthermore, the introduction of 5G increased the demand for stronger server chips that could hand AI, cloud-computing, and other smart-driving technologies. ABF substrate was initially integrated as the ideal packaging technology for CPUs in servers and personal computers. This is because it enhances faster computations by high-end chips.

The Use of Organics and Inorganics in a Microfilm

The discovery of a resin composition that determines the functioning of insulation material is the main objective of R&D that resulted in ABF. The expertise of the Ajinomoto Group in chemistry was fully integrated to create a formulation that comprise microparticle filler, organic epoxy resins, inorganic, and hardener.

Furthermore, the major challenges were the formulation of a methodology for combining inorganic and organic substances and offering great insulating properties. Therefore, the R&D team developed a thermosetting film to overcome these challenges. Also, this thermosetting film features low thermal expansion, high durability, and ease of processing.

The film was initially integrated by a semiconductor manufacturer in the year 1999. This film has become a highly preferred product for almost all high-performance CPUs since its integration. Also, this film has continually evolved to meet the demands of rapid development in circuit integration.

Furthermore, the development in circuit integration has resulted in the development of CPUs that comprise nanometer scale electronics circuits. ABF keeps improving its quality in line with upgrades in CPU functioning. Therefore, this requires the integration of R&D in insulating resins with processing technologies to meet the requirements of customers.


The ABF PCB market will keep experiencing growth over some years. This is because the market is majorly driven by 5G, HPC, and AI. Also, ABF substrate manufacturers will take advantage of this demand by increasing their capacity. IC substrate suppliers are planning to allocate a portion of their SLP (substrate-kike PCB) to aid the manufacturing of ABF substrates.