Bicheng Enterprise Limited Company Logo Bicheng Enterprise Limited
5 1

Rigid-flex PCBs Built On FR-4 and Polyimide

Contact Now* Send an Inquiry to this supplier.
or
Start Order * Name your price

Contact us

Bicheng Enterprise Limited
[China]

Address
6-11C SHIDAI JINGYUAN,FUYONG,BAO'AN,SHENZHEN Shenzhen Guangdong
Phone
86-0755-27374946
Contact name
Bonnie Shi

Quick Information

  • Brand Name: Bicheng Enterprise Limited
  • Place of Origin: China
  • Model Number : BIC-0259-V2.59
  • Base Material : Polyimide (PI) 25µm
  • Board Thickness : 1.6mm
  • Copper Thickness : 35um
  • Min. Hole Size : N/A
  • Min. Line Spacing : N/A
  • Min. Line Width : N/A
  • Surface Finishing : Immersion gold
  • Solder Mask Color : Yellow / Green Solder mas
  • Colour of Component : White
  • Test : 100% Electrical Test

Description

Structure of FPC
According to the number of layers of conductive copper foil, FPC can be divided into single layer circuit, double layer circuit, multi-layer circuit, double sided and so on. 

Single-layer structure: the flexible circuit of this structure is the simplest structure of the flexible PCB. Usually the base material (dielectric substrates) + transparent rubber(adhesive) + copper foil is a set of purchased raw materials(semi-manufactures), the protective film and transparent glue are another kind of bought raw material. First, copper foil must be etched to obtain the required circuit, and the protective film should be drilled to reveal the corresponding pad. After cleaning, the two are combined by rolling. Then the exposed part of the pad electroplated gold or tin to protect. In this way, the big panel board will be ready. Generally also it’s stamped into the corresponding shape of the small circuit board. There is also no protective film directly on the copper foil, but printed resistance soldering coating, so that the cost will be lower, but the mechanical strength of the circuit board will become worse. Unless the strength requirement is not high and the price needs to be as low as possible, it is best to apply the protective film method. 

Double layer structure: when the circuit is too complex to be wired, or copper foil is needed to shield the ground, it is necessary to choose a double layer or even a multilayer. The most typical difference between a multilayer and a single plate is the addition of a perforated structure to connect the layers of copper foil. The first process of transparent rubber + base material + copper foil is to make holes. Drill holes in the base material and copper foil first, clean and then plated with a certain thickness of copper. The subsequent fabrication process is almost the same as the single-layer circuit. 

Double sided structure: both sides of the double sided FPC have pads, mainly used to connect other circuit boards. Although it and monolayer structure is similar, but the manufacturing process is very different. Its raw material is copper foil, protective film and transparent glue. The protective film should be drilled according to the position of the pad first, then the copper foil should be affixed, the pad and track lines should be etched and then the protective film of another drilled hole should be affixed.

Copper foil is available in two different types of copper: ED Copper and RA copper.
ED copper is an electro-deposited (ED) copper foil produced in the same way as the copper foil used for rigid printed circuit boards. This also means that the copper is “treated”, i.e., it has a slightly rough surface on one side, which ensures a better adhesion when the copper foil is bonded to the base material.
RA copper is a rolled and annealed copper foil produced from electrolytically deposited cathode copper, which is melted and cast into ingots. The ingots are first hot-rolled to a certain size and milled on all surfaces. The copper is then cold-rolled and annealed, until the desired thickness is obtained.
Copper foil is available in thickness of 12, 18, 35 and 70 μm.

The most common available for dielectric substrate and coverlay is polyimide films. This material can also be used as coverlay. Polyimide is best suited for flexible circuits because of its characteristics as stated below:
    High temperature resistance allows soldering operations without damaging the flexible circuits
    Very good electrical properties
    Good chemical resistance
Polyimide is available in thicknesses of 12.5, 20, 25 and 50 μm.

Base laminates for rigid printed circuit boards are copper foils laminated together with the base materials, the adhesive coming from the prepreg material during lamination. Contrary to this is the flexible circuit where the lamination of the copper foil to the film material is achieved by means of an adhesive system. It is necessary to distinguish between two main systems of adhesive, namely thermoplastic and thermoset adhesives. The choice is dictated partly by the processing, and partly by the application of the finished flexible circuit.


FPC Case: Rigid-flex PCBs Built on FR-4 and Polyimide
(FPC’s are custom-made products, the picture and parameters shown are just for reference)


General description
This is a type of rigid flexible printed circuit boards for the application of Wireless Security System. It’s a 3 layer rigid-flex PCB at 1.6mm thick at rigid part. The base laminate is from Shengyi. It’s fabricated per IPC 6012 Class 2 using supplied Gerber data.

Parameter and data sheet

Size of Flexible PCB 91.5X 105.3mm
Number of Layers 3
Board Type Rigid-flex PCB
Board Thickness 1.6mm
Board Material Polyimide (PI) 25µm
Board Material Supplier Shengyi
Tg Value of Board Material  60℃
 
PTH Cu thickness ≥20 µm
Inner Iayer Cu thicknes 35 µm
Surface Cu thickness 35 µm
 
Coverlay Colour Yellow / Green Solder mask
Number of Coverlay 2
Thickness of Coverlay 25 µm
Stiffener Material NO
Stiffener Thickness N/A
 
Type of Silkscreen Ink IJR-4000 MW300
Supplier of Silkscreen TAIYO
Color of Silkscreen White
Number of Silkscreen 1
 
Peeling test of Coverlay No peelable
Legend Adhesion 3M 90℃ No peeling after Min. 3 times test
 
Surface Finish Immersion Gold
Thickness of Nickle/Gold Au: 0.03µm(Min.); Ni 2-4µm
RoHS Required Yes
Famability 94-V0
 
Thermal Shock Test Pass, -25℃±125℃, 1000 cycles. 
Thermal Stress Pass, 300±5℃,10 seconds, 3 cycles. No delamination, no blistering.
Function  100% Pass electrical test
Workmanship Compliance with IPC-A-600H & IPC-6013C Class 2








































































Features and benefits
Excellent flexibility
Reducing the volume
Weight reduction
Consistency of assembly
Increased reliability
Controllability of electrical parameter design
The end can be whole soldered
Material optionality
Low cost
Continuity of processing
Professional and experienced engineers
Eligible products rate of first production: >95%  

Application
Laser head FPC,    POS antenna soft board, tablet keypad flex board


About us
Based in China, Bicheng PCB adheres to the philosophy of helping small and medium sized companies reduce their cost and time spent on PCB. We provide a variety of PCB products to meet the demands.

Our Driving Circuit Boards Capabilities 2019
Blind vias, Buried vias
Flex PCB
Heavy Copper Boards 12oz
High Tg, High CTI Material
Hybrid FR-4 and High Frequency Material
Impedance Controlled PCB
IPC Class 2, IPC Class 3
Lead Free PCB (RoHS Compliant)
Multilayer PCBs to 32+ copper layers boards
Metal Core PCB (MCPCB)
PCB Materials – FR-4, Polyimide, Rogers & More
RoHS Compliant PCB Manufacturer
Rigid Flex PCB
RF PCB / High Frequency PCB
Through-hole, BGA, Gold Finger, Edge dome 
Via-in-pad, Filled vias
TS16949 (2009), ISO14001 (2004), ISO9001 (2008), UL certified

Our Services
Focus on Prototypes, Small Batches, Volume Production
Quick turn-around, double sided PCB 24 hours available.
Door to door shipment service

Our Clients are located worldwide. 
Australia: Perth, Melbourne, New South Wales, South Australia, West Australia
Austria: Breitenfurt bei Wien, Graz
Bangladesh: Purana Paltan
Belgium: Deinze, Hasselt
Bulgaria: Plovdiv
Brazil: Caxias do Sul
Canada: Quebec, Ontario, Vancouver
Czech: Pardubice, Horní Pocernice
France: Villeneuve La Garenne Cedex, Montchenu
Germany: Stuttgart, Garbsen, Hamburg, Altenburg, Velbert Kleinmachnow, Potsdam
Hungary: Budapest
India: Tamilnadu
Ireland: Cork
Israel: Nettanya City, Ben-Gurion Airport, Tel Aviv, Yahud, Acre, 
Italy: Peschiera Borromeo, Verona, Mezzocorona, Pietrasanta Lucca, Torino
Kuwait: Safat
Malta: Mosta
Malaysia: Selangor
Mexico: Leon Guanajuato
Portugal: Guimaraes
South Korea: Gyeonggi-DO
Serbia: Kragujevac
Sweden: Goteborg, Siljansns, 
Thailand: Bangkok, Chonburi
Turkey: Ankara, Istanbul, Kocaeli
The Netherlands: Diemen
UK: Bristol, Surrey
Ukraine: Kiev
USA: Connecticut, Alaska, New York City, Miami,, New Jersey, Texas, Colorado, Largo, California, Candler
Vietnam: HoChiMinh City
Zambia: Kitwe


  
 


Certificates

  • UL : E251497

Price

  • Delivery Port : HongKong

Packaging & Delivery

  • Packing :Vacuum
  • Packaging Size : 8 x 5 x 10  Centimeters
  • Package Weight :
  • Delivery Lead Time : 5-6 working days
  • Supply Ability : 45000 pieces per month

Product Image

  • 1Rigid-flex PCBs Built On FR-4 and Polyimide image 1
  • 2 Rigid-flex PCBs Built On FR-4 and Polyimide image 2
  • 3 Rigid-flex PCBs Built On FR-4 and Polyimide image 3
  • 4 Rigid-flex PCBs Built On FR-4 and Polyimide image 4

Send an Inquiry to this supplier

Send an Inquiry to this supplier
* From
  To Bonnie Shi
Bicheng Enterprise Limited
* Buying Product
- Please enter your specific buying item.
e.g. 42 inch LCD TV, leather executive chair
Category : FPC
* Message

Use English only Max. 2000 characters. (Min. 20)

Send
EC21.com does not guarantee the validity of product information or the credentials of sellers.
Chat Online with$Bicheng Enterprise Limited.
Click the "S Chat" Icon on the right-hand to contact Bicheng Enterprise Limited.
Note: Please ensure you have installed Skype program in your computer.
           If you don't have yet, click here to download Skype.

Close Window