Flexible PCB Boards

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Flexible PCB Boards

What is flexible PCB? Flexible PCB is flexible printed circuit board using for connecting different hard designs, we also called flexible circuits, Flex PCB or FPCB, Flexible PCB is fabricated by soft material like polymide, the best flexible pcb material is dupont that have low dielectric breakdown.

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Flexible pcb circuit board

Flexible pcb circuit board is also called flexible circuit board ( FPC ) for short. It is mainly composed of CU (Copper foil) (ED or RA copper foil), A (Adhesive) (acrylic and epoxy resin thermosetting adhesive) ) And PI (Kapton, Polyimide) (polyimide film) composed of circuit boards have many advantages such as space saving, weight reduction and high flexibility. They are widely used in production and life, and the market is still expanding.

flexible PCB

Flex PCB Capability
Items	Type	Normal Manufacturing Capability
Standard Deliverable	Inspection Std.	IPC-6013 Class2, IPC-A-600G Class2
Standard Deliverable	Test Std.	IPC-TM-650,GB/T4677-2002
Material	DuPont	AL9111R, AP9121R, AP9131R, AP8525R
	Panasonic	R-F775 11RB-M, R-F775 22RB-M, R-F775 21RB-M
	Taiflex	NDIR050513HJY,IDIR051013HJY,NDIR100520HJY,THK D200520JY
Process capacity	Layers	0-14
	Thickness	0.07-4.0mm
	Max dimension	10X18 Inch
	Min precision Of Dim	±4mil
	Min diameter of holes	4mil (Laser drill); 8mil(mechanical drill)
	Aspect ratio	10:1
	Min trace width/sp ce outer layer(0.5OZ )	3.0/3.0mil
	Min trace width/space outer layer(1OZ )	3.5/3.5mil
	Min trace width/space outer layer(2OZ )	5/5mil
	Min trace width/space inner layer(0.5OZ )	3.5/3.5mil
	Min trace width/space inner layer(1OZ )	4/4mil
	Min trace width/space wtidth of gridding circr	5/5mil
	Min trace width/space wtidth of out layer	5/5mil（1/3、1/2oz copper）；6.5/5mil(1oz copper)； 8/5.5mil（2oz copper）；
	Min distance Between drilling&conductor（via holes）	7mil(2layers);9mil(3~6Llayers);11mil(≥7layers)
	Min distance Between drilling&conductor(compon ent holes)	10mil(2layers);12mil(3~6Llayers);14mil(≥7layers)

	Min distance Between drilling&conductor(buried &blind holes)	7mil
	Min ring of inner layer(via holes)	5mil(≤6 Layers) ；8mil(＞8Layers)
	Min ring of inner layer(component holes)	8mil(≤6Layers) ；11mil(＞8Layers)
	The vias to the coalescent location of rigid and flex	1mm
	HDI board	1+n+1
Surface treatment	Plating Gold(Hard gold)	Normal:0.25-0.76um;Hard gold:0.76-2um；
	ENIG	Ni:3--8um,Au:0.05-0.1um
	Immersion Tin	0.80-1.20um
	Immersion Silver	0.10-0.30um
	0SP	0.15-0.30um
	HASL	2-40um
	HASL lead free	2-40um
	Silver ink	10-25um
	Selective surface finishing	ENIG+GOLD Finger; ENIG+HASL; ENIG+OSP; Soft gold+ GOLD Finger; Flash gold+HASL; immersion Tin+gold finger; Immersion sliver+gold finger; OSP +gold finger; Silver ink+Plating gold; Silver ink+ENIG.
Min. bended radius	single side flex	3-6 times the flex thickness
	double sides flex	6-10 times the flex thickness
	multi-layers flex	10-15 times the flex thickness
	dynamic bending	20-40 times the flex thickness

Structure of Flexible pcb circuit board

* CU (Copper foil): E.D. and R.A. copper foil

* Cu copper layer, copper skin is divided into RA, Rolled Annealed Copper and ED, Electrodeposited. The two have different characteristics due to different manufacturing principles. ED copper has low manufacturing cost but is fragile. It is used for Bend (bending) or Driver (drilling). ) When the copper surface is easy to break. RA copper has high manufacturing cost but good flexibility, so Flex PCB copper foil is mainly RA copper.

* A (Adhesive): Acrylic and epoxy resin thermosetting adhesive

* Adhesive is composed of two major systems: Acrylic and Epoxy.

* PI (Kapton): Polyimide (polyimide film)

* PI is the abbreviation of Polyimide, called Kapton in DuPont, and the unit of thickness is 1/1000 inch lmil. The characteristics are thinness, high temperature resistance, strong chemical resistance, and good electrical insulation. The current Flex PCB insulation layer has welding requirements. Kapton.

The characteristics of Flexible pcb circuit board

1. Reduce the size of the application product, save space, greatly reduce the weight, increase the function, and reduce the cost.

2. It is highly flexible and can be wired in three dimensions, and the shape can be changed according to space constraints.

3. Foldable without affecting signal transmission, anti-static interference.

4. High and low temperature resistance, flame resistance.

5. Stable chemical changes, high stability and reliability.

6. Providing more related solutions for related products can reduce assembly man-hours and errors, and increase the service life of related products.

The role of Flexible pcb circuit board

1. The function of the soft board can be divided into four types, namely lead wire, printed circuit, connector and multi-function integrated system

2. Lead wires: connections between rigid printed circuit boards, three-dimensional circuits, movable circuits, and high-density circuits.

3. Printed circuit: high-density thin three-dimensional circuit

4. Connector: low-cost connection between hard boards

5. Multi-function integration system: integration of hard board lead wires and connectors

Application of Flexible pcb circuit board

Flexible pcb circuit boards are widely used in commercial electronic equipment, car dashboards, printers, hard disk drives, floppy drives, fax machines, car mobile phones, general phones, notebook computers, cameras, video cameras, CD-ROMs, Hard disks, watches, computers, cameras, medical equipment and other electronic products and equipment.

How to make flexible PCB board ?
Making Flexible PCB flow chart from multilayer flexible pcb factory, want to know more, welcoem to contact us.

fpc-process-flow-chart FASTPCBA

FASTPCBA Service Center

FASTPCBA is Professional 20 Years PCB / PCBA Manufactuer in China, especially more than 80% circuit board are exported to oversea market. We offer 24*7 hours quotation service and engineering support. Offering: 1) PCB Assembly (including Components Sourcing & Testing) 2) Rigid PCB (1~48Layer) 3) Flexible PCB 4) Rigid-flex PCB 5) Aluminum PCB If you have any PCB projects, welcome to contact us. We sincerely hope to cooperate with you.

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Products related to this product / Related Products

: Cheap flex pcb pcb printing company custom flexible pcb quick tu; A copper trace pattern bonded to a flexible substrate with or without a flexible overlay is called cheap flex pcb or flexible circuit PCB. These flexible circuits can be manufactured using the same components to make rigid electronic circuits, the only difference is that the flexible circuits can be molded into any desired shape based on the product's packaging without affecting connectivity.

: DIY flexible pcb manufacturing fast pcb fabrication make pwb; DIY pcb mean the pcb do it yourself, for beginner or you just have small volume pcb prototype to produce, no MOQ limit, we support all pcb project, no MOQ request, flexible