PCBTok Is the Flexible PCB Specialist

The items in our Flexible Substrate line are of the finest quality.

  • Over 12 years of PCB experience in Flex PCB and other types
  • Because we are also PCBA experts, we exceed the competition.
  • We have sufficient raw materials to fulfill your requirements.
  • There is no minimum order quantity for your new Flex PCB order.
  • E-testing and 100 percent AOI
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We Have the Best Flexible PCB Products

We provide the ultimate one-stop turnkey solution for your Flexible Printed Circuit Boards.

PCBTok can follow your custom PCB specifications and provide PCBA as well.

Aside from Flex PCB expertise, we can also assist you with prototype, Loadboard PCBs, and extra long PCBs

Simply give us the required PCB thickness and PCB materials, and we’ll serve you with our high-class high-quality customer care.

This page gives information on our company’s Flexible PCB products. There are several detailed items for your consideration. If you require further information, please contact us.

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Flexible PCB By Feature

HDI Flexible PCB

HDI Flexible PCBs have a wide range of applications. The most prevalent requirement in Multilayer PCB is HDI PCB. This is a 4-layer with blind vias.

Multilayer Flexible PCB

Multilayer Flex PCB is very scalable. High voltage is employed with some of our most complex multilayer boards. Some clients choose Power Flex PCB for it.

Rigid-Flex Flexible PCB

Rigid-flex boards can scale up to 40 layers of PCB with ease. Transparent PCB as Multilayer Flexible PCB is one form of Rigid-Flex. We use nano aluminum oxide.

Flexible PCB Connector

Flexible PCB Connector, when utilized correctly, allows equipment to be used to its full potential. It’s necessary because digital PCBs with flex portions need to work with rigid PCBs and other components.

High Tg Flexible PCB

Rogers or Isola materials are sometimes required by customers with High Tg Flexible PCBs. These can be used in aeronautical and radio frequency applications. Telecoms also require this.

High Speed Flexible PCB

In order to provide high-speed internet and communication, high-speed flexible PCB is essential. When selecting low DK and low Df materials, pay special attention to this type of PCB offering.

Flexible PCB By Type (6)

  • Coverlay Flexible PCB

    Compared to Flexible Soldermask, Coverlay PCB insulates the exterior layer of the Flex PCB, however, it is the more expensive option. Flexible soldermask is epoxy-based, whereas Coverlay PCB is polyimide-based.

  • Impedance Flexible PCB

    Controlling impedance is the focus of Impedance Flexible PCBs, which are not primarily flexible. It contains rigid PCB components, making it a Rigid-Flex PCB. It must be well-designed for bending.

  • Wearable Flexible PCB

    Medical PCB is the most common use for wearable flexible PCB. It is also used in the manufacture of clothing and footwear. This sort of Flex PCB is frequently waterproof with IPC rating.

  • Mobile Flexible PCB

    The Mobile Flexible PCB is the most popular of all Flex PCB types, but other consumer goods Flex PCB is also available. PCB for loudspeakers, guitars, amplifiers, and other items are examples.

  • White Flexible PCB

    People are drawn to Flexible PCB because of its compatibility with advanced design, and White Flexible PCB is gaining popularity for its modern aesthetics. These can be used to make clean looking electronics.

  • Black Flexible PCB

    Black Flexible PCB can be made with LPI, a more advanced method of producing Flex PCB, which we can produce in our facility alongside the more common yellow soldermask/coverlay color.

Flexible PCB By Material (6)

  • Dupont Flexible PCB

    The potential to enhance circuit density is what draws most customers to Dupont Flexible PCB. Dupont PCB includes not only single-sided PCB, but also 4 Layer Flex PCB, 6 Layer Flex PCB, and mere layer flex boards.

  • Shengyi Flexible PCB

    Those looking for low-cost FPC components choose Shengyi Flexible PCB. Shenyi is well-known for mass-produced Flexible PCB goods, as well as 6 Layer PCB, 10 Layer PCB, and other types of PCB.

  • Doosan Flexible PCB

    Another firm noted for its high-quality copper coated laminates is Doosan. It features a large selection of Coverlay products. There is a product that is adaptable. High-power and high-frequency versions are also available.

  • NanYa Flexible PCB

    NanYa Flexible PCB, a Taiwanese company, offers lead-free and halogen-free solutions. It is a fantastic alternative if you want a balance of low cost and strong performance, just like those created by its competitors.

  • Isola Flexible PCB

    Because Isola components and parts have minimal faults, they are dependable for high-quality PCB materials. We stock high-end Isola items such as the Isola 370HR and other High Tg Isola items.

  • Taiflex Flexible PCB

    Taiflex Flexible PCB, which is owned by Taiflex is situated in Taiwan. The components they sell are used as OEM parts for major US, EU, and Asian companies. Their goods are intended for mobile, PC, gaming parts.

Flexible PCB Benefits

24h Online Support
Good Communication

PCBTok has different sales teams who can speak different languages such as English, German, Spanish, and Russian. We can keep good communication with clients.

Production Efficiency
Production Efficiency

PCBTok can build your PCB prototypes quickly. We also provide 24 hour production for quick-turn PCBs at our facility.

Fast Delivery
Fast Delivery

We often ship goods by international forwarders such as UPS, DHL, and FedEx. If they are urgent, we use priority express service.

Quality Assurance
Quality Assurance

All flexible PCBs from PCBTok have passed final quality control, we also provide CoC report, micro-section, and soldering sample with each shipment.

How Is PCBTok Flexible PCB Functional?

There are numerous advantages to using Flex PCBs.

Flex PCBis used by customers who require a smaller PCB for their end-device.

Fine pitch is important in advanced electronic designs, and flex PCB encourages it.

Automotives, for example, utilize a lot of PCB for lighting, dash board displays, and so on.

Flex PCBs that are ultra thin can be as thin as 0.4mm inches. We offer all standard thicknesses for Flex and Rigid-Flex PCB, including the thickest at 3mm.

How Is PCBTok Flexible PCB Functional
Flexible PCB Production Line

Flexible PCB Production Line

There are numerous advantages to using Flex PCBs.

Flex PCB is manufactured using a very smooth, well-coordinated process. We have several production lines which have been perfected already.

In our plant, we have The first step is to construct the core, which is done with the best polyimide material for flex.

Then there’s etching and routing, where PCBTok uses, among other things, a Film Etching Machine. After that, either mechanical or laser PCB drilling is carried out.

The last step is to cover the product with coverlay or LPI soldermask.

Advantages of Flexible PCB Items

Flexible PCB, often known as Flex PCB, refers to a specific type of printed circuit board. These can be maneuvered into small areas, but they can also include rigid components, like in the case of Rigid-Flex PCB.

There are more electronic connections per item on the Multilayer Flex PCB. It is therefore considered cost-effective.

Flex PCBs can be HDI PCBs with high-speed capabilities. At PCBTok, this is one of our most popular products.

Flex PCBs are especially well-suited to mobile, smartphone, and autonomous (IOT) applications. That is the extent of their utility.

Advantages of Flexible PCB Items

Choose the Good Flexible PCB

Choose the Good Flexible PCB
Choose the Good Flexible PCB 1

In Shenzhen, PCBTok maintains excellent facilities and PCB equipment.

Not only that, but our position is an excellent logistical center. You can be sure that your Flexible PCB order will arrive on schedule.

Do you have any questions about Quality Assurance? Then we are prepared to respond.

If you request it, we may provide you with a Certificate of Conformity. You will receive your Flexible PCB on time and without problem.

So, call PCBTok now because of our good Flexible PCB items

Flexible PCB Fabrication

Flexible PCB Fabrication

Our Flex, Flex-Rigid, and Transparent Flex PCB facilities are excellent.

We fabricate employing cutting-edge PCB advanced procedures that are widely accepted around the world.

We visit trade exhibitions to keep up with the latest PCB materials for PCB core, laminates, bondply, and coverlay in order to stay in top shape.

Furthermore, you can count on us to work with reputable cargo handlers. You will undoubtedly receive the Flex PCB that you deserve.

PCB Material Range

For Flex PCBs, we employ fantastic materials like Pyralux Laminates and Acrylic-based Adhesive.

Coverlayers or coverlay are also used. These are polymer compounds that protect the PCB’s copper components from corrosion.

We have a laser machine to add coverlayer to your order, unlike substandard companies.

We’ve been making Flex type printed circuit boards for world-renowned companies since 2008. You can trust us.

OEM & ODM Flexible PCB Applications

Communication Application Flex PCB

Flex PCBs are sometimes used in Voice over Internet Protocol (VoIP) and PBX devices. Wireless Mobile PCB gadgets, however, are the most popular.

Flexible PCB for Satellite Application

Flexible PCB is preferred because security characteristics are vital in this technology. It’s also appropriate for space-based information communication systems.

Flexible PCB for Consumer Goods Application

Monitors, CCTV screens, and cameras are just a few examples of consumer items that Flex PCBs can handle. Our Flex PCB types can be developed for specific gadgets.

Flexible PCB for Wireless Application

Most 5G and 6G wireless applications are covered by Flexible PCBs. Flex PCB tyoes help with high-speed internet.

Flexible PCB for Automotive Application

Complex wired or Rigid PCB assembly can be replaced with a Flexible PCB. It saves space so that automotive engine designs can be as efficient as possible.

flexible-pcb banner 2
PCBTok - Professionally Dependable Flexible PCB Supplier

Send your quote about Flexible PCB right away. We will respond promptly.

You will be surprised with our prices, as well as our prototyping ability

Flexible PCB Production Details As Following Up

NO Item Technical Specification
Standard Advanced
1 Layer Count 1-20 layers 22-40 layer
2 Base Material KB、Shengyi、ShengyiSF305、FR408、FR408HR、IS410、FR406、GETEK、370HR、IT180A、Rogers4350、Rogers400、PTFE Laminates(Rogers series、Taconic series、Arlon series、Nelco series)、Rogers/Taconic/Arlon/Nelco laminate with FR-4 material(including partial Ro4350B hybrid laminating with FR-4)
3 PCB Type Rigid PCB/FPC/Flex-Rigid Backplane、HDI、High multi-layer blind&buried PCB、Embedded Capacitance、Embedded resistance board 、Heavy copper power PCB、Backdrill.
4 Lamination type Blind&buried via type Mechanical blind&burried vias with less than 3 times laminating Mechanical blind&burried vias with less than 2 times laminating
HDI PCB 1+n+1,1+1+n+1+1,2+n+2,3+n+3(n buried vias≤0.3mm),Laser blind via can be filling plating 1+n+1,1+1+n+1+1,2+n+2,3+n+3(n buried vias≤0.3mm),Laser blind via can be filling plating
5 Finished Board Thickness 0.2-3.2mm 3.4-7mm
6 Minimum Core Thickness 0.15mm(6mil) 0.1mm(4mil)
7 Copper Thickness Min. 1/2 OZ, Max. 4 OZ Min. 1/3 OZ, Max. 10 OZ
8 PTH Wall 20um(0.8mil) 25um(1mil)
9 Maximum Board Size 500*600mm(19”*23”) 1100*500mm(43”*19”)
10 Hole Min laser drilling size 4mil 4mil
Max laser drilling size 6mil 6mil
Max aspect ratio for Hole plate 10:1(hole diameter>8mil) 20:1
Max aspect ratio for laser via filling plating 0.9:1(Depth included copper thickness) 1:1(Depth included copper thickness)
Max aspect ratio for mechanical depth-
control drilling board(Blind hole drilling depth/blind hole size)
0.8:1(drilling tool size≥10mil) 1.3:1(drilling tool size≤8mil),1.15:1(drilling tool size≥10mil)
Min. depth of Mechanical depth-control(back drill) 8mil 8mil
Min gap between hole wall and
conductor (None blind and buried via PCB)
7mil(≤8L),9mil(10-14L),10mil(>14L) 5.5mil(≤8L),6.5mil(10-14L),7mil(>14L)
Min gap between hole wall conductor (Blind and buried via PCB) 8mil(1 times laminating),10mil(2 times laminating), 12mil(3 times laminating) 7mil(1 time laminating), 8mil(2 times laminating), 9mil(3 times laminating)
Min gab between hole wall conductor(Laser blind hole buried via PCB) 7mil(1+N+1);8mil(1+1+N+1+1 or 2+N+2) 7mil(1+N+1);8mil(1+1+N+1+1 or 2+N+2)
Min space between laser holes and conductor 6mil 5mil
Min space between hole walls in different net 10mil 10mil
Min space between hole walls in the same net 6mil(thru-hole& laser hole PCB),10mil(Mechanical blind&buried PCB) 6mil(thru-hole& laser hole PCB),10mil(Mechanical blind&buried PCB)
Min space bwteen NPTH hole walls 8mil 8mil
Hole location tolerance ±2mil ±2mil
NPTH tolerance ±2mil ±2mil
Pressfit holes tolerance ±2mil ±2mil
Countersink depth tolerance ±6mil ±6mil
Countersink hole size tolerance ±6mil ±6mil
11 Pad(ring) Min Pad size for laser drillings 10mil(for 4mil laser via),11mil(for 5mil laser via) 10mil(for 4mil laser via),11mil(for 5mil laser via)
Min Pad size for mechanical drillings 16mil(8mil drillings) 16mil(8mil drillings)
Min BGA pad size HASL:10mil, LF HASL:12mil, other surface technics are 10mil(7mil is ok for flash gold) HASL:10mil, LF HASL:12mil, other surface technics are 7mi
Pad size tolerance(BGA) ±1.5mil(pad size≤10mil);±15%(pad size>10mil) ±1.2mil(pad size≤12mil);±10%(pad size≥12mil)
12 Width/Space Internal Layer 1/2OZ:3/3mil 1/2OZ:3/3mil
1OZ: 3/4mil 1OZ: 3/4mil
2OZ: 4/5.5mil 2OZ: 4/5mil
3OZ: 5/8mil 3OZ: 5/8mil
4OZ: 6/11mil 4OZ: 6/11mil
5OZ: 7/14mil 5OZ: 7/13.5mil
6OZ: 8/16mil 6OZ: 8/15mil
7OZ: 9/19mil 7OZ: 9/18mil
8OZ: 10/22mil 8OZ: 10/21mil
9OZ: 11/25mil 9OZ: 11/24mil
10OZ: 12/28mil 10OZ: 12/27mil
External Layer 1/3OZ:3.5/4mil 1/3OZ:3/3mil
1/2OZ:3.9/4.5mil 1/2OZ:3.5/3.5mil
1OZ: 4.8/5mil 1OZ: 4.5/5mil
1.43OZ(positive):4.5/7 1.43OZ(positive):4.5/6
1.43OZ(negative ):5/8 1.43OZ(negative ):5/7
2OZ: 6/8mil 2OZ: 6/7mil
3OZ: 6/12mil 3OZ: 6/10mil
4OZ: 7.5/15mil 4OZ: 7.5/13mil
5OZ: 9/18mil 5OZ: 9/16mil
6OZ: 10/21mil 6OZ: 10/19mil
7OZ: 11/25mil 7OZ: 11/22mil
8OZ: 12/29mil 8OZ: 12/26mil
9OZ: 13/33mil 9OZ: 13/30mil
10OZ: 14/38mil 10OZ: 14/35mil
13 Dimension Tolerance Hole Position 0.08 ( 3 mils)
Conductor Width(W) 20% Deviation of Master
1mil Deviation of Master
Outline Dimension 0.15 mm ( 6 mils) 0.10 mm ( 4 mils)
Conductors & Outline
( C – O )
0.15 mm ( 6 mils) 0.13 mm ( 5 mils)
Warp and Twist 0.75% 0.50%
14 Solder Mask Max drilling tool size for via filled with Soldermask (single side) 35.4mil 35.4mil
Soldermask color Green, Black, Blue, Red, White, Yellow,Purple matte/glossy
Silkscreen color White, Black,Blue,Yellow
Max hole size for via filled with Blue glue aluminium 197mil 197mil
Finish hole size for via filled with resin  4-25.4mil  4-25.4mil
Max aspect ratio for via filled with resin board 8:1 12:1
Min width of soldermask bridge Base copper≤0.5 oz、Immersion Tin: 7.5mil(Black), 5.5mil(Other color) , 8mil( on copper area)
Base copper≤0.5 oz、Finish treatment not Immersion Tin : 5.5 mil(Black,extremity 5mil), 4mil(Other
color,extremity 3.5mil) , 8mil( on copper area
Base coppe 1 oz: 4mil(Green), 5mil(Other color) , 5.5mil(Black,extremity 5mil),8mil( on copper area)
Base copper 1.43 oz: 4mil(Green), 5.5mil(Other color) , 6mil(Black), 8mil( on copper area)
Base copper 2 oz-4 oz: 6mil, 8mil( on copper area)
15 Surface Treatment Lead free Flash gold(electroplated gold)、ENIG、Hard gold、Flash gold、HASL Lead free、OSP、ENEPIG、Soft gold、Immersion silver、Immersion Tin、ENIG+OSP,ENIG+Gold finger,Flash gold(electroplated gold)+Gold finger,Immersion silver+Gold finger,Immersion Tin+Gold finge
Leaded Leaded HASL
Aspect ratio 10:1(HASL Lead free、HASL Lead、ENIG、Immersion Tin、Immersion silver、ENEPIG);8:1(OSP)
Max finished size HASL Lead 22″*39″;HASL Lead free 22″*24″;Flash gold 24″*24″;Hard gold 24″*28″;ENIG 21″*27″;Flash gold(electroplated gold) 21″*48″;Immersion Tin 16″*21″;Immersion silver 16″*18″;OSP 24″*40″;
Min finished size HASL Lead 5″*6″;HASL Lead free 10″*10″;Flash gold 12″*16″;Hard gold 3″*3″;Flash gold(electroplated gold) 8″*10″;Immersion Tin 2″*4″;Immersion silver 2″*4″;OSP 2″*2″;
PCB thickness HASL Lead 0.6-4.0mm;HASL Lead free 0.6-4.0mm;Flash gold 1.0-3.2mm;Hard gold 0.1-5.0mm;ENIG 0.2-7.0mm;Flash gold(electroplated gold) 0.15-5.0mm;Immersion Tin 0.4-5.0mm;Immersion silver 0.4-5.0mm;OSP 0.2-6.0mm
Max high to gold finger 1.5inch
Min space between gold fingers 6mil
Min block space to gold fingers 7.5mil
16 V-Cutting Panel Size 500mm X 622 mm  ( max. ) 500mm X 800 mm ( max. )
Board Thickness 0.50 mm (20mil) min. 0.30 mm (12mil) min.
Remain Thickness 1/3 board thickness 0.40 +/-0.10mm( 16+/-4 mil )
Tolerance ±0.13 mm(5mil) ±0.1 mm(4mil)
Groove Width 0.50 mm (20mil) max. 0.38 mm (15mil) max.
Groove to Groove 20 mm (787mil) min. 10 mm (394mil) min.
Groove to Trace 0.45 mm(18mil) min. 0.38 mm(15mil) min.
17 Slot Slot size tol.L≥2W PTH Slot: L:+/-0.13(5mil) W:+/-0.08(3mil) PTH Slot: L:+/-0.10(4mil) W:+/-0.05(2mil)
NPTH slot(mm) L+/-0.10 (4mil) W:+/-0.05(2mil) NPTH slot(mm) L:+/-0.08 (3mil) W:+/-0.05(2mil)
18 Min Spacing from hole edge to hole edge 0.30-1.60 (Hole Diameter) 0.15mm(6mil) 0.10mm(4mil)
1.61-6.50 (Hole Diameter) 0.15mm(6mil) 0.13mm(5mil)
19 Min spacing between hole edge to circuitry pattern PTH hole: 0.20mm(8mil) PTH hole: 0.13mm(5mil)
NPTH hole: 0.18mm(7mil) NPTH hole: 0.10mm(4mil)
20 Image transfer Registration tol Circuit pattern vs.index hole 0.10(4mil) 0.08(3mil)
Circuit pattern vs.2nd drill hole 0.15(6mil) 0.10(4mil)
21 Registration tolerance of front/back image 0.075mm(3mil) 0.05mm(2mil)
22 Multilayers Layer-layer misregistration 4layers: 0.15mm(6mil)max. 4layers: 0.10mm(4mil) max.
6layers: 0.20mm(8mil)max. 6layers: 0.13mm(5mil) max.
8layers: 0.25mm(10mil)max. 8layers: 0.15mm(6mil) max.
Min. Spacing from Hole Edge to Innerlayer Pattern 0.225mm(9mil) 0.15mm(6mil)
Min.Spacing from Outline to Innerlayer Pattern 0.38mm(15mil) 0.225mm(9mil)
Min. board thickness 4layers:0.30mm(12mil) 4layers:0.20mm(8mil)
6layers:0.60mm(24mil) 6layers:0.50mm(20mil)
8layers:1.0mm(40mil) 8layers:0.75mm(30mil)
Board thickness tolerance 4layers:+/-0.13mm(5mil) 4layers:+/-0.10mm(4mil)
6layers:+/-0.15mm(6mil) 6layers:+/-0.13mm(5mil)
8-12 layers:+/-0.20mm (8mil) 8-12 layers:+/-0.15mm (6mil)
23 Insulation Resistance 10KΩ~20MΩ(typical:5MΩ)
24 Conductivity <50Ω(typical:25Ω)
25 Test voltage 250V
26 Impedance control ±5ohm(<50ohm), ±10%(≥50ohm)

PCBTok offers flexible shipping methods for our customers, you may choose from one of the methods below.

1. DHL

DHL offers international express services in over 220 countries.
DHL partners with PCBTok and offers very competitive rates to customers of PCBTok.
It normally takes 3-7 business days for the package to be delivered around the world.


2. UPS

UPS gets the facts and figures about the world’s largest package delivery company and one of the leading global providers of specialized transportation and logistics services.
It normally takes 3-7 business days to deliver a package to most of the addresses in the world.


3. TNT

TNT has 56,000 employees in 61 countries.
It takes 4-9 business days to deliver the packages to the hands
of our customers.


4. FedEx

FedEx offers delivery solutions for customers around the world.
It takes 4-7 business days to deliver the packages to the hands
of our customers.


5. Air, Sea/Air, and Sea

If your order is of large volume with PCBTok, you can also choose
to ship via air, sea/air combined, and sea when necessary.
Please contact your sales representative for shipping solutions.

Note: if you need others, please contact your sales representative for shipping solutions.

You can use the following payment methods:

Telegraphic Transfer(TT): A telegraphic transfer (TT) is an electronic method of transferring funds utilized primarily for overseas wire transactions. It’s very convenient to transfer.

Bank/Wire transfer: To pay by wire transfer using your bank account, you need to visit your nearest bank branch with the wire transfer information. Your payment will be completed 3-5 business days after you have finished the money transfer.

Paypal: Pay easily, fast and secure with PayPal. many other credit and debit cards via PayPal.

Credit Card: You can pay with a credit card: Visa, Visa Electron, MasterCard, Maestro.

Quick Quote
  • “The service department at this store is excellent. Quick prototype PCB service and turnaround is frequently available. Not the cheapest, but one of the best, given that they are certified by all of the big international labels. In China, you can trust this brand called PCBTok.”

    Kojo Bonsu, PCB Assembler from Ghana
  • “I’ve purchased from them several times over the years for both specific and more general PCB needs. They are obviously competent salespeople. Employees at the store work that way because they are by far the most helpful and focused on attempting to understand exactly what you require. Every time I’ve gone there for parts, I’ve been pleased with the prices. When I need a specific component part, if they don’t have it, they will point me in the right direction, which is wonderful.”

    Edmund Reed, Materials Manager from Canada
  • “PCBTok offers a huge selection of PCB connectors, adapters, and multilayer PCB. I can’t possibly name all of the things they have versions of. This is undeniably their strongest suit. I can stroll in and locate what I need without having to wonder if they have any Rogers or Isola specials on hand. Thank you very much for the broad availability. Helps people like me make life easy.”

    Leo Moultrie, Purchaser/ Buyer from UK

Flexible PCB: The Completed FAQ Guide

You’ve probably heard of flexible PCBs, but are you curious about how they work? Fortunately, there is a comprehensive FAQ guide that covers everything! Continue reading to find out the most frequently asked flex PCB questions and to learn more about this new technology. You’ll also find some helpful hints for making flex PCB design easier!

This guide should answer some of your questions and give you the confidence to proceed with your flex PCB project.

How to Order Your Flexible PCB from PCBTok

There are several steps about how to order flexible board for you:

Step 1. You will send your Gerber file in 274X format to us and provide the specification such as the board thickness, copper, surface finish, solder mask, and silkscreen; then we will give the offer to you.

Step 2. We will send the engineering query to you after we receive your order.

Step 3. We will start the production, meanwhile, inform you of the delivery date.

Step 4. When the goods are ready, we will ship them by UPS, FedEx, or DHL.

Step 5. We’re very appreciative of your feedback after you review the quality.

What Are Flexible PCBs Made of?

The first step in making your circuit flexible is deciding what material to use for the base layer. Flexible PCBs are typically made from a thermosetting resin known as polyimide, which has high tensile strength and stability over a wide temperature range.

This material is also heat resistant and long-lasting. The disadvantage is that polyimide lacks the flexibility of rigid PCBs, so you must exercise caution when selecting a flexible PCB.

Copper is a common metal used in the fabrication of flexible PCBs. Copper foil provides excellent electrical, physical, and cost performance and is suitable for the majority of flexible circuit applications.

There are many different types of copper foil, but copper is the most common one used in most flexible circuits. Copper foil is a popular choice due to its low cost and wide range of applications. Copper foil is also more malleable than most other metals and can be patterned with virtually any design.

Flexible PCB Materials

Flexible PCB Materials

Polyimide, which has a fish scale-like structure, is another material used to make flexible PCBs. It cannot be etched or roughened and is commonly used in high-density boards. Silver paste with conductive properties is also commonly used on flexible boards. A photosensitive polyimide overlay can also be used to increase density and stability depending on the application.

What Is the Structure of a Flexible PCB?

A flexible PCB’s structure is similar to that of a standard PCB. The flex layers are in the center of the structure, and the rigid areas have an equal number of layers. A flexible PCB’s structure is similar to that of a regular PCB, but with distinct characteristics. A flexible PCB contains additional files in addition to the flex layers.

Structure of a Flexible PCB

Structure of a Flexible PCB

There are a number of advantages to using a flexible PCB among the many benefits. Its structure is relatively simple to build and provides good heat dissipation. It has a low overall cost. The soft and hard combination design compensates for its reduced component carrying capacity.

The versatility of flexible PCBs provides an advantage over traditional printed circuit boards in that it allows for better electronic packaging while reducing the number of interconnects. Polyester and polyimide are two substrate materials that can be used to make flexible PCBs.

While the assembly process for rigid PCBs is similar, the two types differ in some ways. A flexible PCB is more likely than a rigid one to be bent. As a result, maintaining flatness and accuracy is critical.

The manufacturing process for a flexible PCB is similar to that of a rigid PCB, but special operations are required to ensure proper flatness and accuracy.

Here’s a video on how to design a Flexible PCB:

What Are the Differences Between Rigid-Flex and Flexible PCB?

Designers should understand the differences between rigid-flex and flexible PCB before making a decision. Rigid-flex boards are more expensive than flexible PCBs but are easier to manufacture. Both materials, however, have advantages and disadvantages. Some of the key differences between rigid-flex and flexible PCBs are listed below.

The main distinction between rigid and flexible PCB is the material used to manufacture it. Rigid PCBs are made of copper-clad laminate, whereas flexible PCBs are made of thermoset plastic rather than ink.

They do, however, have similar thickness and material stack-up. Flexible printed circuit boards are thinner and can be used in flexible devices. Both are useful in different situations.

A flex PCB encapsulates the external circuitry with a flexible coverlay, or ‘coverlay.’ The coverlay is similar to the solder mask on the rigid PCB, but it is made of polyimide. Polyimide is typically coated with a thermoset adhesive. By applying pressure to the adhesive, the two layers are laminated together.

You will have a look at this video:

The dielectric layers of a rigid-flex PCB are made of epoxy resin and woven glass fiber cloth, whereas the dielectric layer of a flexible PCB is made of homologous sheets of flexible polyimide. Using standard assembly techniques, rigid-flex PCBs are simple to assemble.

Flex circuits, on the other hand, are more versatile and can fit into unusual packages. Flexible PCBs can also be used to replace complex connectors, reduce electronic size and space requirements, and change the plane of connectorization.

How to Choose a Professional Flexible PCB Manufacturer?

Several factors should be considered when selecting a professional Flexible PCB Manufacturer. One critical factor to consider is whether the manufacturer has prior experience in the PCB industry. You should find out if they can provide good suggestions for your design.

A poor quality product can harm a supplier’s reputation while also ruining the user’s experience. Visit the manufacturer’s plant and ask questions about the technology used on the boards to ensure you’re getting a high-quality product.

Another consideration when selecting a PCB manufacturer is whether they offer a wide range of products. It is critical to select a PCB manufacturer that offers the substrates used in its boards.

Furthermore, a PCB manufacturer should be able to complete your order within a reasonable time frame. Another important consideration is whether the company provides the PCB layers and vias you require. Before deciding on a manufacturer, make sure to ask about the quality and pricing of PCBs.

Look for a reputable manufacturer with a proven track record and competitive pricing. They should be able to give you an exact delivery date as well as an accurate lead time.

You should avoid low-cost manufacturers who outsource engineering work and cut PCBs separately from panel production. Furthermore, low-cost manufacturers may use substandard raw materials and manufacturing equipment, as well as lack the necessary IPQC and QC practices.

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