Factory Custom FPC Rigid‑Flex Boards, Multi‑Layer PCB ENIG FPC, 4‑Layer Rigid‑Flex Circuit Boards

Key Material & Surface Finish Highlights
​1. High-TG FR4 Rigid Core
​Our rigid sections utilize high-thermal-grade FR4 (FR4 High-TG), providing exceptional structural stability, rigidity, and dimensional endurance. This allows easy integration of heavy surface-mount technology (SMT) components, multi-layer interconnects, and complex micro-vias without mechanical deformation during high-temperature assembly processes like reflow soldering.
​2. Premium Polyimide (PI) Flexible Layer
​Polyimide is the gold standard for flexible printed circuit design. Offering superior thermal tolerance, dynamic bendability, and low dielectric loss, the PI layer allows the flex portion to bend, fold, or dynamically move inside tight enclosures. Whether for static installation bends or dynamic flexing applications, our PI films ensure long-term mechanical endurance without trace fracture.
​3. Immersion Gold (ENIG) Surface Finish
​Electroless Nickel Immersion Gold (ENIG) is the ideal surface treatment for high-density Rigid-Flex PCBs:
​Superior Surface Flatness: Essential for fine-pitch QFP, BGA, and SMT component soldering.
​Excellent Oxidation Resistance: Offers long shelf-life and reliable contact performance for connectors and tactile switches.
​Wire Bonding Compatibility: Ideal for high-reliability military, medical, and industrial electronics.
​Lead-Free & RoHS Compliant: Fully compliant with global environmental standards.
​Core Advantages of Our Rigid-Flex PCBs
​Maximum Space & Weight Reduction: By replacing bulky wire harnesses, ribbon cables, and multi-board connectors with a single integrated rigid-flex assembly, you can reduce device weight and volume by up to 60%.
​Enhanced Signal Integrity & Reliability: Eliminating inter-board connectors reduces point-of-failure risks, vibration susceptibility, and signal loss, ensuring uninterrupted high-speed data transmission.
​3D Assembly Versatility: Flexible PI sections allow the circuit board to fold around contours, fit into custom enclosures, and support compact product industrial designs.
​Exceptional Thermal Management: High-TG FR4 paired with heat-resistant Polyimide ensures continuous operation under high thermal stress and harsh industrial environments.
​Primary Application Fields
​Our ENIG FR4+PI Rigid-Flex PCBs are deployed across high-precision global industries, including:
​Medical Devices: Wearable health trackers, endoscopes, cardiac monitors, and portable diagnostic equipment requiring ultra-compact, body-conforming electronics.
​Aerospace & Defense: Avionics, satellite communication units, missile guidance systems, and rugged military handhelds operating under extreme shock and vibration.
​Automotive Electronics: LiDAR sensors, battery management systems (BMS), engine control units (ECU), and infotainment display modules.
​Consumer & Industrial Tech: Foldable smartphones, high-end cameras, smart wearables, industrial robotics, and IoT hardware platforms.
​Quality Assurance & Global Standards
​Quality is embedded in every phase of our manufacturing process. Every Rigid-Flex PCB undergoes strict multi-stage testing to meet international industry standards:
​AOI (Automatic Optical Inspection): Scans inner and outer copper layers for trace defects prior to lamination.
​100% Electrical Testing: Flying probe testing and dedicated fixture testing ensure no open or short circuits.
​Cross-Section Analysis & Thermal Stress Testing: Verifies hole wall copper thickness, lamination bond strength, and thermal resilience.
​X-Ray Inspection: Validates multi-layer registration and micro-via alignment.

Source manufacturer, safety and quality let you rest assured

Focusing on FPC for more than ten years, Androw Technology looks forward to cooperating with you. Work together to create high-quality,high-end products