Cutting-Edge Polyimide PCBs: Advanced Solutions for High-Temperature and High-Frequency Applications in Challenging Environments

Introduction:

TB-73 copper-clad laminates are specifically designed to endure high temperatures and high frequencies. These laminates are widely used in the manufacturing of specialized circuit boards for demanding industries such as aerospace, aviation, military, and underground petroleum exploration. TB-73 exhibits exceptional dielectric properties at high frequencies, along with remarkable resistance to high temperatures and radiation. The material is available in nominal thicknesses ranging from 0.1mm to 10mm.

Chemical Test Report:

TB-73 has been thoroughly tested to ensure its quality and performance, meeting the technical conditions specified in the Q/XA50089-2004 standard.

Peel strength tests conducted after thermal stress indicate that TB-73 surpasses the requirement of ≥1.0 N/mm, with an actual test result of 1.42 N/mm, demonstrating excellent performance. Similarly, the peel strength at 170℃ meets the requirement of ≥0.7 N/mm, with a successful actual test result.

TB-73 exhibits a volume resistivity exceeding ≥5×10^6 MΩ·cm, as per the C-96/35/90 standard, with an actual test result of 6.6×10^7 MΩ·cm, meeting the specified criteria. It also meets the volume resistivity requirement of ≥5×10^6 MΩ·cm according to the E-24/204 standard, with an actual test result of 6.2×10^8 MΩ·cm.

The surface resistivity of TB-73 falls within the specified range as well. Actual test results for the C-96/35/90 and E-24/204 standards are 3.4×10^7 MΩ and 2.3×10^8 MΩ, respectively, both meeting the necessary standards.

TB-73 demonstrates a low moisture absorption rate of ≤0.35%, with an actual test result of 0.11%, successfully meeting the requirement. Moreover, the breakdown voltage of TB-73 exceeds the minimum requirement of 40 kV, with a test result of 44.3 kV.

The dielectric constant at 1MHz for TB-73 is ≤4.5, and the actual test result is 4.12, meeting the specified standard. Similarly, the dissipation factor at 1MHz is ≤0.01, with an actual test result of 0.0072, indicating successful compliance.

TB-73 exhibits a bending strength of ≥400 N/mm2 in the machine direction and ≥300 N/mm2 in the cross direction, meeting the necessary criteria. Additionally, the material can withstand thermal stress at 288℃ for 180 seconds without experiencing delamination or blistering.

TB-73 boasts a glass transition temperature (Tg value) of 257℃, satisfying the specified requirement.

Our PCB Capability (TB-73 Polyimide RF PCB)

PCB material: Polyimide Glass Fabric Copper-clad Laminates Designation: TB-73 Dielectric constant: 4.12 Layer count: Sinlge-sided PCB, Double-sided PCB, Multi-layer PCB, Hybrid PCB Dielectric thickness: 5mil (0.127mm), 10mil(0.254mm), 20mil (0.508mm), 30mil (0.762mm), 50mil (1.27mm), 60mil (1.524mm) etc. Copper weight: 1oz (35μm), 2oz (70μm) PCB size: ≤400mm X 500mm Solder mask: Green, Black, Blue, Red, Yellow etc. Surface finish: Electroless Nickel and Immersion Gold (ENIG), HASL, Immersion silver, Immersion tin, Bare copper, OSP, ENEPIG (Electroless Nickel Electroless Palladium Immersion Gold), Pure gold plated etc..

About Bicheng

Bicheng PCB is a leading supplier?of high-quality printed circuit boards (PCBs) based in Shenzhen, China. Established in 2003, the company has over 20?years of experience in the industry and has built a reputation for delivering reliable and cost-effective PCB solutions to customers across the globe.

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Bicheng PCB's manufacturing capabilities cover a wide range of PCB types, including single-sided, double-sided, and multilayer boards, with layer counts ranging from 1 to 32. The company's PCBs are used in a variety of industries, including telecommunications, aerospace, defense, medical, and industrial electronics.

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Bicheng PCB offers a wide range of substrate materials for its PCBs, including high-frequency materials such as RO4003C, RO4350B, and RO4730G3, as well as standard FR-4 materials like high-Tg S1000-2M, TU-872 SLK, TU-768, IT-180A, and Isola 370HR. The company also offers metal core, polyimide, and PET substrates, among others.

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Bicheng PCB's advanced manufacturing capabilities allow for a range of options that can be customized to meet specific customer needs. For example, the company can produce PCBs in sizes up to 1100mm by 600mm, with a board outline tolerance of ±0.0059" (0.15mm) and thickness tolerance of ±8% for T≥0.8mm and ±10% for t＜0.8mm. The company can also accommodate a range of copper thicknesses, from 17μm to 350μm (0.5oz to 10oz), and drill hole diameters from 0.0079" to 0.25" (0.2mm to 6.35mm).

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Bicheng PCB's commitment to quality and customer satisfaction is reflected in its ISO 9001:2015 certification. The company's experienced engineers and technicians work closely with customers to ensure that their specific requirements are met and that their PCBs are delivered on time and within budget.