Clarifications of FPC
  According to the combination of base material and copper foil, flexible circuit board can be divided into two types: flexible board with adhesive and flexible board without adhesive. The price of non-adhesive flexible PCB is much higher than that of adhesive flexible PCB, but its flexibility, bonding force between copper foil and substrate and flatness of solder are also better than that of adhesive flexible PCB. So it is only used in the high demand situations, such as the: COF (CHIP ON FLEX, flexible board with bare chip, the high flatness of the pad) and so on. Because its price is high, most of the flexible PCBs used in the market are still adhesive flexible circuit board. Because the flexible circuit board is mainly used in the situation where bending is required, if the design or process is not reasonable, it is easy to produce micro-cracks, welding and other defects.
   
  Economy of using FPC
  If the circuit design is relatively simple, the total volume is small, and the space is suitable, the traditional internal connection is much cheaper. Flexible circuits are a good design option if the circuit is complex, processes many signals or has special electrical or mechanical requirements. When the size and performance of applications exceed the capacity of rigid circuits, flexible assembly is the most economical. A 12mil pad with a 5mil through hole and a flexible circuit with 3mil lines and spacing can be fabricated on a thin film. Therefore, it is more reliable to mount the chip directly on the film. There is no flame retardant that could be an ion source. These films may be protective and solidified at higher temperatures to obtain higher glass transition temperatures. Flexible materials are less costly than rigid materials because they are free of connectors.
   
   
   
  FPC Case: Single Layer Flexible Circuit Board with Polyimide Stiffener
  (FPC’s are custom-made products, the picture and parameters shown are just for reference)
   
   
  General description
  This is a type of flexible printed circuit for the application of antenna. It’s a single layer board at 0.15mm thick. The base laminate is from ITEQ, It’s fabricated per IPC 6012 Class 2 using supplied Gerber data. 3M tape is applied on the back side.
   
  Parameter and data sheet
    	 		 			| Number of Layers |  			1 |  		
 		 			| Board Type |  			Flexbile cirucit |  		
 		 			| Board Thickness |  			0.1mm +/-10% |  		
 		 			| Board Material |  			Polyimide (PI) 25um |  		
 		 			| Board Material Supplier |  			ITEQ |  		
 		 			| Tg Value of Board Material |  			60℃ |  		
 		 			|   |  		
 		 			| PTH Cu thickness |  			N/A |  		
 		 			| Inner Iayer Cu thicknes |  			N/A |  		
 		 			| Surface Cu thickness |  			35 um (1oz) |  		
 		 			|   |  		
 		 			| Coverlay Colour |  			Yellow |  		
 		 			| Number of Coverlay |  			1 |  		
 		 			| Thickness of Coverlay |  			25 um |  		
 		 			| Stiffener |  			200 um |  		
 		 			| 3M Tape |  			Yes |  		
 		 			|   |  		
 		 			| Type of Silkscreen Ink |  			IJR-4000 MW300 |  		
 		 			| Supplier of Silkscreen |  			TAIYO |  		
 		 			| Color of Silkscreen |  			White |  		
 		 			| Number of Silkscreen |  			2 |  		
 		 			|   |  		
 		 			| Mininum Trace (mil) |  			N/A |  		
 		 			| Minimum Gap(mil) |  			N/A |  		
 		 			|   |  		
 		 			| Surface Finish |  			Immersion Gold |  		
 		 			| 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
  Small quantity order is accepted
  Meeting your printed circuit board needs from PCB prototyping to mass volume production.
   
   
  Application
  Capacitive touch screen / panel, Industrial control temperature controller soft board, consumer card reader soft 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. 
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