• Blue solder mask Rigid-Flex PCB(R-FPCB)
  • Blue solder mask Rigid-Flex PCB(R-FPCB)

Blue solder mask Rigid-Flex PCB(R-FPCB)

Product Model: Blue Solder Mask Rigid-Flex PCB
Material: FR-4 + PI composite substrate
Layer Structure: 4 layers
Solder Mask: Blue / White
Finished Thickness: 0.6mm
Copper Thickness: 0.025mm
Surface Finish: Immersion surface treatment
Min. Trace / Space: 0.1mm / 0.1mm
Application: Communication and digital rigid-flex electronic devices

  • Blue solder mask Rigid-Flex PCB(R-FPCB)
  • Description

  • Data Sheet

1. Company Overview & Technical Strength of Maxipcb

Maxipcb Circuits Limited (Maxipcb®.com) insists on continuous R&D innovation, focusing on high-precision, applicable new technologies annually. Currently, it can produce high-precision unconventional products with 2mil line width, small aperture, ultra-long and ultra-wide specifications, meeting high-end electronic product requirements.
Maxipcb has mature batch production processes for 3-8 layer multilayer PCBs, blind/buried hole PCBs, and 2-6 layer R-FPCB. Equipped with advanced high-precision equipment (drilling machines, laser machines, vacuum exposure machines, etc.), it implements strict full-process quality control to ensure the quality and quantity of each batch of products.




rigid-flex PCB(r-fpcb)

2. Product Application Scope & Global Market Layout

Maxipcb’s products are widely used in industrial equipment, medical equipment, automotive electronics, communications, digital products and aerospace. Its products are exported to Germany, France, the United States, Australia, Sweden and other global markets, providing customers with convenient and efficient one-stop services.

3. Quality Certification & Quality Assurance

Maxipcb holds UL certifications for various materials and thick PI thick copper, and has passed ISO9001 quality management system and SGS RoHS certification, providing reliable quality assurance. Since its establishment, it has focused on R-FPCB R&D and manufacturing, becoming a trusted partner for global customers.

4. Overview of R-FPCB (Rigid-Flex PCB)

4.1 Definition & Structural Features

R-FPCB is a composite circuit board formed by laminating flexible FPC and rigid PCB substrates into an integrated component, realizing three-dimensional design, which supports the miniaturization of smart health assistants and requires high manufacturing precision.
A single R-FPCB can replace multi-connector composite PCBs, improving performance and stability while maximizing space utilization. A standard 4-layer R-FPCB uses a PI core with copper foils on both sides, laminated with FR4 rigid layers to form a high-reliability structure.

4.2 Manufacturing Characteristics

R-FPCB manufacturing involves multiple materials and complex processes, with a longer cycle than standard rigid PCBs (a 4-layer R-FPCB cycle is 5-7 times that of a standard 4-layer rigid PCB). Maxipcb relies on mature process control and advanced equipment to balance efficiency and precision, meeting smart health assistant prototype and mass production needs.

5. Core Advantages of R-FPCB for Smart Health Assistants

5.1 Space-Saving & Cost Optimization

R-FPCB’s integrated structure eliminates connectors and HotBar processes, optimizing space utilization for ultra-small, ultra-thin smart health assistants, reducing product volume, and saving component and process costs.

5.2 Enhanced Signal Transmission Reliability

For smart health assistants requiring real-time physiological data detection, R-FPCB shortens signal transmission paths (simplified from PCB-connector-FPC-connector-PCB to PCB-FPC-PCB), reducing signal attenuation. Maxipcb optimizes its signal performance to ensure stable and accurate data transmission.

5.3 Simplified Assembly & Efficiency Improvement

R-FPCB reduces SMT mounting and overall assembly man-hours by reducing connectors, eliminating FPC insertion and HotBar processes, and simplifying BOM to lower management and inventory costs.

5.4 Other Key Performance Advantages

R-FPCB has flexible 3D wiring, high/low temperature resistance, foldability, anti-static interference, stable chemical properties and high reliability, adapting to smart health assistant applications, reducing product size and weight, and improving functional integration.

6. R-FPCB Application Adaptability & Cost Trend

In addition to smart health assistants, R-FPCB is widely used in medical equipment, aerospace and digital products, especially suitable for miniaturized, high-reliability products.
Although R-FPCB has higher initial costs, it is ideal for smart health assistants requiring space and weight reduction. With industry maturity, its costs are gradually decreasing, improving cost-effectiveness.

7. Maxipcb’s Exclusive Advantages in R-FPCB for Smart Health Assistants

7.1 Strict Material Selection Standards

Maxipcb selects materials suitable for smart health assistants:
• Flexible Substrate: DuPont AP adhesive-free PI substrates, with excellent flexibility, electrical performance and heat resistance, avoiding common adhesive defects.
• Rigid Substrate: PI resin materials laminated with P95 substrates/prepregs, avoiding warpage caused by resin incompatibility.
• Adhesive: No-flow prepregs to prevent glue overflow; raw materials are strictly verified to meet RoHS, high Tg and impedance requirements.

7.2 Precision Process Control

Maxipcb controls core R-FPCB processes to ensure precision and reliability:
• Inner Layer Pattern Transfer: Electrolytic cleaning to avoid deformation, supporting 0.1mm~0.15mm line width/spacing.
• Multi-Layer Positioning: OPE positioning and X-ray drilling to eliminate alignment errors, meeting 0.1mm~0.15mm inter-layer registration requirements.
• Lamination & Drilling: Optimized parameters, silicone rubber gaskets and high-speed drilling machines to ensure flatness and hole quality.

Model : Blue solder mask Rigid-Flex PCB(R-FPCB)

Material : FR-4+PI

Layer : 4Layers

Color : Blue/White

Finished Thickness : 0.6mm

Copper Thickness : 0.025mm

Surface Treatment : Surface immersion  treatment

Minimum line width / distance : 0.1mm

Application : Communication digital rigid-flex pcb(r-fpcb)