Rogers RO4350B Hybrid PCB | 4-Layer Mixed Dielectric High Frequency PCB Manufacturer

1. ภาพรวมผลิตภัณฑ์: Where High-Frequency Performance Meets Cost-Effectiveness

In today’s rapidly evolving landscape of 5G communication, microwave radar, and aerospace electronics, the material selection for PCBS (แผงวงจรพิมพ์) directly determines the performance ceiling of end-user equipment. To meet the stringent signal integrity requirements of RF (ความถี่วิทยุ) and high-speed digital circuits while controlling manufacturing costs, hybrid laminate PCB technology has emerged as a vital solution.

UGPCB Rogers RO4350B Hybrid PCB represents the pinnacle of this technological approach. This product ingeniously combines Rogers RO4350B high-frequency laminates with conventional FR-4 materials through precise construction design, creating a 4-layer board that delivers both exceptional high-frequency characteristics and mechanical stability. With a stable ค่าคงที่ไดอิเล็กตริก (ดีเค) ของ 3.48 and a precisely controlled finished board thickness of 1.0มม, complemented by ทองแช่ (เห็นด้วย) พื้นผิวเสร็จสิ้น, this PCB is engineered specifically for communication equipment demanding ultimate signal transmission quality.

2. Product Definition and Scientific Classification

คำนิยาม: UGPCB’s Rogers RO4350B Hybrid PCB is a mixed dielectric laminate printed circuit board. It features an asymmetric “2-layer Rogers RO4350B + 2-layer FR4” construction, integrating high-frequency materials with standard materials within a single board.

Scientific Classification:

• โดยวัสดุ: Rigid Board, Mixed Dielectric Laminate

• By Operating Frequency: High-Frequency Microwave Board

• By Process Structure: PCB หลายชั้น, specifically 4-layer configuration

3. Core Technical Parameters and Design Considerations

UGPCB strictly adheres to material specifications in the design of this product, ensuring every board precisely matches the requirements of RF front-end module designs:

• Core Construction (โครงสร้าง): 2 Layers Rogers RO4350B + 2 Layers FR4. This configuration places RO4350B on the outer layers for high-frequency signal transmission, while FR4 serves as inner or bottom layers providing mechanical support and power distribution, achieving an optimal balance between performance and cost.

• ค่าคงที่ไดอิเล็กตริก (ดีเค): 3.48 (typically tested at 10GHz). RO4350B’s Dk exhibits minimal variation with frequency and temperature changes, ensuring phase stability of high-frequency signals.

• Physical Dimensions:

  • จำนวนเลเยอร์: 4 เลเยอร์

  • ความหนาสำเร็จรูป: 1.0มม

  • ความหนาของอิเล็กทริก: 0.508มม (typically referring to the RO4350B core layer thickness, critical for impedance control)

• Copper Thickness Configuration:

  • ความหนาของวัสดุทองแดง: ½ oz (18μm) ฮฮ/ฮฮ, meaning all layers start with 0.5 oz copper foil.

  • ความหนาของทองแดงสำเร็จรูป: 1/0.5/0.5/1 (ออนซ์). This precise layer-specific copper thickness design delivers:

    • L1 & L4 (Outer Layers): 1 ออนซ์ (35μm), enhancing current-carrying capacity and outer layer soldering reliability.

    • L2 & L3 (ชั้นใน): 0.5 ออนซ์ (18μm), facilitating fine-line etching and ensuring signal layer precision.

• การรักษาพื้นผิว: ทองแช่ (เห็นด้วย). ENIG provides excellent surface planarity—critical for high-frequency signal transmission where skin effect dominates—while offering superior oxidation resistance and solderability.

• Flammability Rating: อล 94 วี-0 เป็นไปได้, ensuring product safety.

4. Working Principle and Performance Advantages

หลักการทำงาน

As a carrier and electrical interconnection platform for electronic components, this PCB operates on a fundamental principle: high-frequency signals travel through microstrip or stripline structures within the Rogers RO4350B material layers (L1, L2). Thanks to RO4350B’s exceptionally low ปัจจัยการกระจาย (ฟ) and stable dielectric constant, signal energy loss during transmission is minimized, with reflections and scattering effectively suppressed. The underlying FR4 layers primarily handle power distribution and digital control signal transmission, interconnected through precisely designed vias without mutual interference.

Core Performance Advantages

• ความสมบูรณ์ของสัญญาณที่เหนือกว่า: Rogers RO4350B material ensures low insertion loss and high signal transmission speed, perfectly meeting 5G communication requirements for high data rates.

• Excellent Temperature Stability: RO4350B features a high glass transition temperature (ทีจี) and an exceptionally low Z-axis coefficient of thermal expansion (ซีทีอี), ensuring plated through-hole (พท) reliability under extreme temperature variations and preventing barrel cracking.

• Optimized Power and Thermal Management: The asymmetric copper thickness design (1oz outer layers) facilitates heat dissipation from high-power components. RO4350B’s thermal conductivity, ประมาณ 0.69 W/m·k, exceeds that of standard FR4, effectively drawing heat away from hotspots.

• Mechanical and Process Compatibility: Unlike pure ceramic or PTFE materials, RO4350B is rigid and highly compatible with FR4 processing workflows, supporting conventional CNC drilling and copper deposition processes for volume production.

5. Manufacturing Process Flow

UGPCB employs a rigorously controlled process flow to ensure the quality of this mixed dielectric PCB:

1. Incoming Material Inspection: Strictly source original Rogers RO4350B laminates and grade A FR4 materials (such as SYTECH or equivalent), verifying Dk values and resin flow characteristics.

2. Inner Layer Circuitry (L2/L3): Apply dry film to 0.5oz inner layer copper, followed by exposure, การพัฒนา, and acid etching to form precision circuits.

3. Brown Oxide and Lamination: Critical process! Stack inner layer cores, เตรียมการ, and outer layer RO4350B/copper foil according to construction specifications. Due to differing resin flow characteristics of RO4350B and FR4, stepped temperature profiles during lamination are essential to prevent delamination and voids.

4. การขุดเจาะ: Utilize ultra-hard coated drill bits with optimized speed and feed rates to minimize wear from glass fiber and ceramic fillers in RO4350B material, ensuring smooth hole walls.

5. Electroless Copper and Panel Plating: Achieve interlayer interconnection and increase outer layer copper thickness to 1oz through pattern plating, with hole copper thickness meeting IPC Class 2/3 มาตรฐาน.

6. Outer Layer Circuitry: Fabricate precision RF microstrip or antenna traces on L1 and L4.

7. Solder Mask and Legend: Apply high-quality photosensitive solder mask ink to protect circuits and prevent signal leakage.

8. การตกแต่งพื้นผิว: ทองแช่ (เห็นด้วย) กระบวนการ. Apply a uniform chemical nickel-gold layer on pads for excellent solderability.

9. Profiling and Electrical Testing: CNC routing for final shape, followed by 100% flying probe testing or dedicated fixture testing, with special focus on การควบคุมความต้านทาน verification within specified tolerances.

6. สถานการณ์แอปพลิเคชันทั่วไป

With its stable Dk value of 3.48 และ mixed dielectric construction, UGPCB’s product is primarily applied in the following high-frequency communication fields:

• Base Station Antennas: 5G Massive MIMO antenna arrays, เพาเวอร์แอมป์

• การสื่อสารผ่านดาวเทียม: LNB (Low-Noise Block downconverters), GPS active antennas

• อุปกรณ์อิเล็กทรอนิกส์ยานยนต์: 77GHz millimeter-wave radar, in-vehicle infotainment high-frequency modules

• การควบคุมอุตสาหกรรม: High-frequency data acquisition equipment, wireless bridge devices

• Test and Measurement: Internal high-frequency boards for network analyzers, RF probe cards

7. ทำไมต้องเลือก UGPCB?

• Precise Parameter Replication: We understand that data is critical. We commit to strict adherence to your การออกแบบ PCB documentation, ensuring RF performance aligns with simulation designs.

• Expert Hybrid Lamination Technology: With over a decade of experience in mixed dielectric board processing, we have mastered RO4350B and FR4 matching flow control techniques, eliminating process challenges such as delamination and warpage.

• Rapid Response and Service: Comprehensive support from เค้าโครง PCB review and impedance calculation to prototyping and small-batch production.

Ready to Elevate Your RF Design?

Partner with UGPCB as your most reliable PCB ความถี่สูง manufacturing ally. Whether for 5G communications, ระบบเรดาร์, or precision instrumentation, ของเรา Rogers RO4350B Hybrid PCB delivers stable, มีประสิทธิภาพ, and cost-effective hardware support.

Please send the following specifications to our sales team:

• แบบอย่าง: Rogers RO4350B Hybrid PCB

• Quantity: [Your required quantity]

• ข้อกำหนดพิเศษ: [เช่น, impedance trace tolerances, packaging preferences]

Contact UGPCB Experts: Request Quote | [อีเมล: sales@ugpcb.com]