4 Layer Flex PCB With Special Process Solution For Thermostats

How 4 Layer Flex Circuit Board With Special Process Solution Improves Performace Of Thermostats

Technical requirements
Product type 4 Layer Flex Printed Circuit Boards
Number of layer Standard 4 Layer PCB Stackup
Line width and
line spacing
Board thickness 1.0mm
Copper Thickness 35um
Minimum Aperture 0.2mm
Flame Retardant 94v0
Surface Treatment Immersion Gold
Special Process Brown Oxide
Resistance Welding Color Black
Functional testing AOI/four-wire/continuity/copper slices
Application Industry Smart Home Industry
Application Device  Thermostats
4 layer flex pcb board for thermostats in smart home industry

4 Layers flexible Printed Circuit Board

4 Layer Flex PCB With Special Process Solution For Thermostats

Thermostats In Smart Home Industry

Introducing Next Generation 4-Layer Flex Circuit Board for Smart Home Thermostats

Capel is proud to introduce our latest innovation in the smart home industry - a 4-layer flex circuit board using a special process solution designed to enhance the performance of your thermostat. With 16 years of experience in flexible circuit board manufacturing projects, Capel has developed cutting-edge solutions that meet the demanding requirements of the smart home industry. Our 4-layer flexible PCB is designed to provide exceptional performance, reliability and durability, making it ideal for smart home thermostat applications.

Our 4-layer flexible printed circuit boards are designed to meet the specific needs of the smart home industry, offering a standard 4-layer PCB stack-up with a board thickness of 1.0mm and a copper thickness of 35um. The 0.15mm/0.1mm line width and spacing ensure precise and efficient signal transmission, while the 0.2mm minimum aperture allows for complex and detailed circuits. In addition, our PCBs are flame retardant (94v0) and feature an immersion gold surface treatment, providing excellent protection against environmental factors and ensuring long-term reliability.

One of the key features of our 4-layer flex PCBs is a special process solution called Brown Oxide, which improves the board's performance and durability. This innovative process solution provides superior resistance to environmental factors, ensuring the PCB can withstand the harsh conditions of smart home thermostat applications. The brown oxide process also increases the overall reliability and longevity of the PCB, making it ideal for mission-critical applications.

At Capel, we understand the importance of rigorous testing and quality assurance in the manufacturing of electronic components. That's why our 4-layer flexible printed circuit boards undergo comprehensive functional testing, including AOI (Automated Optical Inspection), four-wire testing, continuity testing and copper sheet testing. This ensures that each PCB meets our strict quality standards and delivers superior performance in smart home thermostat applications.

With our extensive experience in the smart home industry, Capel has a deep understanding of the unique challenges and requirements of thermostat applications. Our 4-layer flexible printed circuit boards are customized to meet these needs, delivering the reliability, performance and durability required by smart home manufacturers and developers. Whether it is a residential or commercial application, our PCBs are the perfect choice for smart home thermostats.

In summary, Capel's 4-layer flex circuit board uses a special process solution to provide an excellent solution for smart home thermostat applications. With advanced features like brown oxide process, comprehensive testing and industry-specific designs, our PCBs are designed to deliver superior performance and reliability. Trust Capel to meet your smart home thermostat PCB needs and experience the difference brought by 16 years of experience in flexible circuit board manufacturing projects.



                                                   WHY CHOOSE OUR CAPEL

Shenzhen Capel Technology Co., Ltd. has been specializing in the production of high-end, high-precision flexible circuit boards since 2009.

We have 15 years of professional and technical experience and have mature, excellent, and advanced manufacturing capabilities.

We are able to provide customized 1-30 layer flexible circuit boards,2-32 layer rigid-flex PCBs, and 1-60 layers rigid PCBs to customers in the Automotive Industry.


Capel’s Service:

Support Custom 1-30 Layer FPC Flexible PCB,2-32 Layer Rigid-Flex Circuit Boards,1-60 Layer Rigid PCBHigh-Precision HDI BoardsReliable Quick Turn PCB PrototypingFast Turn SMT PCB Assembly

Industry We Service:

Medical Devices, IOT, TUT, UAV, Aviation, Automotive, Telecommunications, Consumer Electronics, Military, Aerospace, Industrial Control, Artificial Intelligence, EV, etc…



Category Process Capability Category Process Capability
Production Type Single layer FPC / Double layers FPC
Multi-layer FPC / Aluminum PCBs
Rigid-Flex PCB
Layers Number 1-30 layers FPC Flexible PCB
2-32 layers Rigid-FlexPCB1-60 layers Rigid PCBHDI Boards
Max Manufacture Size Single layer FPC 4000mm
Double layers FPC 1200mm
Multi-layer FPC 750mm
Rigid-Flex PCB 750mm
Insulating Layer Thickness 27.5um /37.5/ 50um /65/ 75um / 100um /
125um / 150um
Board Thickness FPC 0.06mm - 0.4mm
Rigid-Flex PCB 0.25 - 6.0mm
Tolerance of PTH Size ±0.075mm
Surface Finish Immersion Gold/Immersion
Silver/Gold Plating/Tin Plating/OSP
Stiffener FR4 / PI / PET / SUS / PSA/Alu
Semicircle Orifice Size Min 0.4mm Min Line Space/ width 0.045mm/0.045mm
Thickness Tolerance ±0.03mm Impedance 50Ω-120Ω
Copper Foil Thickness 9um/12um / 18um / 35um / 70um/100um Impedance Controlled Tolerance ±10%
Tolerance of NPTH Size ±0.05mm The Min Flush Width 0.80mm
Min Via Hole 0.1mm Implement Standard GB / IPC-650 / IPC-6012 / IPC-6013II /
Immersion Gold AU 0.025-0.075UM /NI1-4UM Electro nickel gold AU 0.025-25.4UM / NI 1-25.4UM
Certifications UL and ROHS
ISO 14001:2015
ISO 9001:2015
Patents model patents
invention patents

pcb design


                        8 layer HDI  Flexible PCBs for Medical                                              10 layer Rigid-Flex Circuit Boards for Aerospace


flexible pcb design

                                    4 layer Flex PCB Circuits for Industry Control                                 16 layer Rigid Flexible PCBs for Automotive



Advanced process equipment:

We have the latest and most advanced production equipment and technology, including high-precision photolithography machines, etching machines, assembly equipment, etc. These

equipment ensure the precision, efficiency, and stability of the production process, thereby providing customers with high-quality products. quality product. High-quality flexible circuit board products. 

Rigid-Flex PCB Manufacturing Process

Strict quality control:

Our company puts quality control first and implements a series of strict quality control measures throughout the entire production process. Every step from the selection and procurement

of raw materials to production and packaging is comprehensively inspected and tested to ensure that every flexible circuit board product meets the highest standards.

Efficient production management:

We have an efficient production management system to optimize the production process, improve production efficiency and reduce costs. With rich production experience, we can quickly respond to customer needs and ensure timely delivery.

Perfect after-sales service:

We are customer-centric and provide perfect after-sales service. Whether it is solving problems during product use or providing technical support and repair services, we can respond in a timely manner and provide solutions. By using these phrases, you can effectively demonstrate the company's strength and advantages in the flexible circuit board production process, thereby gaining the trust and recognition of customers.


quality control for pcb


We can provide customers with high-quality rapid prototyping, reliable rapid mass production, and fast delivery to help their projects enter the market quickly and smoothly and gain competitive advantages.

Strong supply chain management:

We have established long-term cooperative relationships with a number of high-quality suppliers to ensure timely access to high-quality raw materials. At the same time, we have an efficient supply chain management team that can fully control the supply status of raw materials, ensure that materials are in place on time, and support rapid production and delivery.

Flexible production planning:

We adopt an advanced production planning system that can quickly adjust and schedule according to customer needs. Whether it is prototype production or large-scale production, we can flexibly allocate resources to complete production in a short time and ensure on-time delivery.

Efficient process flow:

We have an efficient manufacturing process and strictly plan and control the entire process from order receipt to product shipment. By optimizing the production process, improving production efficiency, and implementing quality control measures, we can quickly manufacture and deliver products to ensure the smooth start of our customers' projects.

Quick response:

We attach great importance to customer needs and are able to respond quickly and adjust production and scheduling accordingly. Whether it's an urgent order or an unexpected situation, we can make decisions quickly and take appropriate measures to ensure timely delivery.

Reliable logistics management:

We cooperate with a number of professional logistics companies to ensure that goods are delivered to customers safely and timely. We have a complete logistics management process and warehousing system that can accurately track transportation status and ensure on-time delivery.

delivery time

Post time: Mar-22-2024
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