Shenzhen Bicheng Electronics Technology Co., Ltd Company Logo Shenzhen Bicheng Electronics Technology Co., Ltd
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Multilayer 4 Layer Flexible PCB for GPRS Router

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Shenzhen Bicheng Electronics Technology Co., Ltd
[China]

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

Quick Information

  • Brand Name: Bicheng Enterprise Limited
  • Place of Origin: China
  • Model Number : BIC-0287-V2.87
  • Base Material : Polyimide 25µm
  • Board Thickness : 0.25mm
  • Copper Thickness : 35um
  • Min. Hole Size : N/A
  • Min. Line Spacing : N/A
  • Min. Line Width : N/A
  • Number of Layers : 4-Layer
  • Surface Finishing : Immersion gold
  • Solder Mask Color : Yellow / Black
  • 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.



FPC Case: Multilayer 4 Layer Flexible PCB for GPRS Router
(Flexible printed circuits 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 GPRS Router. It’s a 4 layer multilayer FPC at 0.25mm
thick. The base laminate is from ITEQ, It’s fabricated per
IPC 6012 Class 2 using supplied Gerber data. 

Parameter and data sheet

Size of Flexible PCB 50.32 X 30.28mm
Number of Layers 4
Board Type  Flexible PCB
Board Thickness 0.25mm
Board Material  Polyimide 25µm
Board Material Supplier ITEQ
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 / Black
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
Great customer service
Delivery on time: >98%  


Application
Flexible flat cable,     medical equipment controller, consumer
card reader soft board

Why choose us? 
1) Focus on your core competencies: We’ve deeply known it is
full of fierce competition for our customers in the market.
You can focus on such important competencies as research and
development, sales and marketing based on our professional
performance and skilled services that exceeding your
expectation.

2) Cutting-edge technology: it is rational for a small and
medium-sized customer to hanker after the latest equipment and
manufacturing expertise for its PCBs. By the partnerships
with Bicheng PCB, you gain access to reach your expectation
with our 3 factory bases with over 26,000 square meters.

4) Save the cost of production: Production cost is one of the
key points of our customers’ product competitiveness. Bicheng
PCB have been striving to reduce its manufacturing cost from
equipment introduce, worker training and technology
improvement to increase their profitability. Customers are
satisfied with our cost savings but without quality loss.

5) Avoid hassle: It’s an upset matter when quality problem
hassling you. Bicheng engineering design prevents problem from
occurring in pre-production. You will not get headache with
Bicheng prototypes, small orders and volume production. Our
rate of customer complaint is less than 1% and will be solved
satisfactory.

6) Save time: Market requires the products updating quickly.
Bicheng PCB always works fast and flexible to save the time of
production from prototype to standard production, 
quick turn-around or scheduled deliveries.

7) An excellent team: Bicheng is trustworthy partner with
passion, discipline, responsibility and honesty. We have a
team of experienced sales persons and skilled customer
services. Do not change your supplier. If change is must,
Bicheng is the right one for you.






 


Certificates

  • UL : E251497

Price

  • Delivery Port : HongKong

Packaging & Delivery

  • Packing :Vacuum
  • Packaging Size : 10 x 5 x 5  Centimeters
  • Package Weight :
  • Delivery Lead Time : 4-5 working days
  • Supply Ability : 45000 pieces per month

Product Image

  • 1Multilayer 4 Layer Flexible PCB for GPRS Router image 1
  • 2 Multilayer 4 Layer Flexible PCB for GPRS Router image 2
  • 3 Multilayer 4 Layer Flexible PCB for GPRS Router image 3
  • 4 Multilayer 4 Layer Flexible PCB for GPRS Router image 4

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