4 Layer Green Oil OSP Rigid Flex PCB Customized Board for Electronic devices

4-layer OSP soft and hard combination board PCB

The 4-Layer OSP Rigid-Flex PCB is an innovative solution for mid-to-high-end electronics, balancing complex circuit needs and flexible assembly with a precision layered structure, OSP protection, and rigid-flex adaptability: its 4-layer design (50%+ more wiring space than 2-layer) integrates sensors and processors via precise lamination; the FR-4 rigid part ensures stability while the PI flexible part (-40℃ to 125℃) bends to R=0.8mm for 3D spaces, reducing connectors; the thin (0.1-0.3μm) OSP coating prevents copper oxidation (12+ month storage) and enables reliable soldering of 0402/0201 components, with benefits including strong signal integrity (independent ground/power layers cutting EMI/RFI, 30% less loss than 2-layer for <1GHz signals), durability (rigid part resisting 1000G impacts, flexible part enduring 100,000+ bends at R=1mm, working in 95% humidity and dusty environments), and cost-effectiveness (40% less material and 20% shorter production time than 6+ layer boards, with faster OSP than immersion gold), fitting smart wearables, automotive systems, and industrial IoT sensors to solve performance vs. space challenges.

Advantages of Rigid-Flex PCB:

• Support higher complexity circuits
• Optimize signal integrity
• Soft and hard combination of spatial adaptability
• Structural strength and stability

Basic Process Overview

• Material preparation: Selecting flexible substrates (e.g., polyimide) and rigid materials (e.g., FR-4)
• Layer processing: Creating inner layer patterns, drilling, and plating
• Lamination: Combining FPC and PCB layers through thermal pressing
• Final processing: Drilling, surface treatment, and quality control

Product Features:

Dongguan Xingqiang Circuit Board Co., Ltd. was established in 1995 and is a professional circuit boardfactory that manufactures single-sided and double-sided PCBs, multi-layer PCBs, and Rigid Flex PCBs.

The company has two production bases in Dongguan andJiangxi, covering an area of 205000 square meters with a comprehensive monthly production capacity of 200000 square meters. The company's products are widely used in computer peripherals, communication, power supply, medical, automotive electronics, household appliances and other fields.

Our company advocate integrity, win-win and pioneering business philosophy, and put into practice the work style of "pragmatism, hard work and responsibility" to create a good corporate environment. Based on a new management model, advanced technology and equipment and good product quality, We always adhere to the corporate spirit of customer first and people-oriented.