Advanced Build-Up Films: Revolutionizing Semiconductor Packaging

Advanced Build-Up Films: Revolutionizing Semiconductor Packaging

At American Fairfield Inc., we proudly showcase BUF Build-Up Films, cutting-edge materials engineered for the evolving needs of semiconductor packaging, high-speed communication, and LED technologies. These advanced films are redefining performance and reliability for industries requiring robust thermal, mechanical, and electrical properties.


Key Features of BUF Build-Up Films

1. Unparalleled Thermal and Electrical Performance

  • Low Dielectric Constant (<2.8): Ensures high-speed signal transmission essential for 5G and 6G technologies.
  • Thermal Conductivity up to 8.0 W/m-K: Enables efficient heat dissipation for high-power semiconductor applications and LED assemblies​​.

2. Exceptional Strength and Durability

  • Lap-Shear Strength >25 N/mm²: Provides reliable bonding for multi-layer builds​​.
  • Device Push-Off Strength >3600 psi: Ensures stable and durable integration in fan-out wafer-level packaging (FOWLP)​​.

3. Advanced Stress and Moisture Resistance

  • Molecular Engineering for Stress Relief: Prevents delamination and cracking during high-temperature applications​​.
  • Ultra-Low Moisture Absorption (<0.3%): Delivers superior reliability in humid environments, ideal for telecommunications and automotive electronics​​.

4. Flexible and Efficient Processing

  • Vacuum or Roll Lamination: Operates effectively at ambient or elevated temperatures up to 150°C, enhancing productivity​​.
  • Customized Thickness Options: Films available in thicknesses ranging from 10 to 100 microns to support coreless build-up and chiplet integrations​​.

Key Applications of BUF Build-Up Films

  1. Semiconductor Packaging
    BUF films provide the perfect solution for bonding 3D chip architectures and multi-layer circuits, addressing the challenges of miniaturization and heat management.

  2. High-Speed Communication Systems
    With low dielectric properties and excellent signal integrity, BUF films are indispensable for 5G infrastructure, fiber optics, and optical communication devices.

  3. LED and Display Technology
    BUF materials ensure optimal thermal conductivity and mechanical stability, prolonging the life of LED chips and enhancing the performance of display technologies.

  4. Automotive and Aerospace Electronics
    BUF films withstand extreme environments, offering high reliability and durability for automotive sensors, avionics, and electric vehicle systems.


Why BUF Build-Up Films Are the Future

These advanced materials are designed to meet the demands of industries driving innovation, such as semiconductors, telecommunications, and automotive electronics. With low lamination temperatures, stress-resistant properties, and excellent moisture stability, BUF Build-Up Films are an essential component for manufacturers aiming to achieve high productivity and superior performance.

At American Fairfield, our suppliers are committed to providing the most advanced solutions for your needs. Contact us today to learn how BUF Build-Up Films can enhance your products and processes!

FAQ About BUF

1. What are BUF Build-Up Films used for?

BUF Build-Up Films are advanced materials primarily used in semiconductor packaging, 5G communication systems, LED technologies, and aerospace electronics. They provide excellent thermal conductivity, mechanical strength, and low dielectric constant for optimal performance in high-tech applications.


2. How do BUF Build-Up Films improve semiconductor packaging?

These films enable 3D chip integration and multi-layer circuit designs, addressing challenges like heat dissipation and miniaturization. They offer robust bonding strength and stress relief to ensure durability and efficiency in semiconductor applications.


3. Are BUF Build-Up Films suitable for 5G and high-speed communication devices?

Yes, BUF Build-Up Films have a low dielectric constant (<2.8) and low dielectric loss, making them ideal for maintaining signal integrity in 5G infrastructure, fiber optics, and high-speed communication devices.


4. What industries benefit most from BUF Build-Up Films?

Industries such as telecommunications, automotive electronics, aerospace, and LED technology benefit significantly. These films are essential for applications requiring high reliability, thermal management, and structural stability.


5. What are the key features of BUF Build-Up Films?

  • Thermal Conductivity: Up to 8.0 W/m-K for effective heat dissipation.
  • Durability: High lap-shear strength (>25 N/mm²) and device push-off strength (>3600 psi).
  • Moisture Resistance: Ultra-low absorption (<0.3%) for humid environments.
  • Versatility: Supports coreless build-up, chiplet integration, and various thickness options.

6. How are BUF Build-Up Films processed?

BUF films are processed through vacuum or roll lamination at temperatures up to 150°C. They are designed for efficient handling and integration into fan-out wafer-level packaging (FOWLP) and other advanced systems.


7. Can BUF Build-Up Films handle extreme environments?

Yes, these films are engineered for high temperature stability (operating temperatures >180°C) and can withstand harsh conditions, making them suitable for automotive sensors, aviation electronics, and electric vehicles.


8. Where can I buy BUF Build-Up Films?

BUF Build-Up Films are available through American Fairfield Inc.. Contact us today for more information or to request a quote tailored to your specific needs.

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