High-Frequency Polyimide Circuit Board: 4-Layer PCB 1oz Copper

We proudly present our high-performance 4-layer rigid PCB manufactured with premium polyimide material, specifically engineered for demanding applications in extreme environments. This PCB delivers exceptional reliability in high-temperature, high-pressure operating conditions for aerospace, military electronics, and downhole oil extraction equipment.

The stack-up of this PCB consists of:

- Copper Layer 1: 35 μm (1oz)

- Polyimide Core: 0.32 mm

- Copper Layer 2: 35 μm (1oz)

- Polyimide Prepreg: 0.1 mm

- Polyimide Core: 0.8 mm

- Polyimide Prepreg: 0.1 mm

- Copper Layer 3: 35 μm (1oz)

- Polyimide Core: 0.32 mm

- Copper Layer 4: 35 μm (1oz)

PCB details

Features and Benefits of Polyimide Material

Thermal Stability

Polyimide laminate exhibits exceptional heat resistance, withstanding 288°C thermal stress tests without delamination or blistering, and features a high glass transition temperature (Tg) of 257°C.

Mechanical Strength

Demonstrates outstanding peel strength (1.42 N/mm after thermal stress) and bending strength (410.2 N/mm² in machine direction), ensuring durability in harsh environments.

Electrical Performance

Maintains excellent insulation properties with:

- Volume resistivity: 6.6×10⁸ MΩ·cm

- Surface resistivity: 3.4×10⁸ MΩ

- Dielectric constant: 4.12 @ 1MHz

- Dissipation factor: 0.0072 @ 1MHz

Environmental Resistance

- Moisture absorption rate of only 0.11%

- Excellent radiation resistance

- Maintains performance in extreme conditions

Additional Advantages

- High-frequency dielectric performance

- Reliable operation in oil and gas environments

- Superior dimensional stability

- Excellent chemical resistance

Typical Applications

The unique properties of Polyimide make it ideal for demanding applications:

- Aerospace systems: Avionics requiring extreme reliability

- Military electronics: Mission-critical defense systems

- Downhole equipment: Oil extraction electronics

- Satellite components: Space-grade reliability

- High-temperature industrial controls

- Medical equipment sterilization systems

Compliance and Standards

This PCB adheres to IPC-Class-2 standards, ensuring consistent quality and reliability. All manufacturing files are supplied in Gerber RS-274-X format for seamless production integration.

Global Availability

We offer worldwide shipping with reliable delivery to engineers and manufacturers across all regions.

Conclusion

Our 4-layer rigid Polyimide PCB represents the ultimate solution for applications requiring extreme thermal and environmental resistance. With its unmatched thermal stability, excellent mechanical properties, and proven reliability, this solution delivers outstanding performance in the most challenging conditions. By choosing this PCB, you're selecting a high-performance solution that won't compromise under stress - perfect for your most demanding applications.

Contact us today if you looking for high reliability and high performance PCB solution!

Company Profile

Founded in 2003, Shenzhen Bicheng Electronics Technology Co., Ltd. is a well-established supplier and exporter of high-frequency PCBs based in Shenzhen, China. With 18 years of industry experience, the company serves global sectors including cellular base station antennas, satellite communications, high-frequency passive components, microstrip and stripline circuits, millimeter-wave equipment, radar systems, and digital RF antennas. The company’s high-frequency PCBs are primarily manufactured using three major high-frequency material brands: Rogers Corporation, Taconic, and Wangling, with dielectric constants ranging from 2.2 to 10.2. Headquartered in the economically vibrant city of Shenzhen, Bicheng PCB operates with a philosophy rooted in serving small and medium-sized enterprises, offering a wide variety of circuit boards to meet diverse market demands.

Main Business & PCB Applications

The company upholds the highest manufacturing standards to deliver products known for exceptional quality, performance, and reliability. In addition to high-frequency PCBs, Bicheng has divisions specializing in FR-4 circuit boards, flexible circuits, and metal-core PCBs, supporting everything from prototyping and small runs to mass production. The company actively develops value-added PCB solutions such as HDI, quick-turn production, impedance control, heavy copper, and backplane boards. This strategic focus enables Bicheng to offer an extended and complementary product range, forming an integrated line that spans from low-end to high-end PCBs. These circuit boards are widely used in home appliances, portable and consumer electronics, medical devices, aerospace, and telecommunications.

Main Material Partners