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Double Sided Flexible PCBs Built on Polyimide with 0.15mm thick and Immersion Gold for Display Backlight

Categories Hybrid PCB Board
Brand Name: Bicheng Enterprise Limited
Model Number: BIC-0271-V2.71
Certification: UL
Place of Origin: CHINA
MOQ: 1 PIECE
Price: USD2 .99-8.99 per piece
Payment Terms: T/T,Paypal
Supply Ability: 50000 PIECE PER MONTH
Delivery Time: 8-9 WORKING DAY
Packaging Details: VACUUM
Board Material: Polyimide (PI) 25um
Board Thickness: 0.15 mm
Surface/Inner layer Cu thickness: 35 µm
Surface Finish: Immersion Gold
Coverlay Colour: Yellow
Color of Silkscreen: White
Function: 100% Pass electrical test
Number of Layers: 2
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    Double Sided Flexible PCBs Built on Polyimide with 0.15mm thick and Immersion Gold for Display Backlight

    Double Sided Flexible PCBs from Shenzhen Polyimide PCBs with 0.15mm thick

    (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 GPS Tracking for Cars. It's a 2 layer FPC at 0.15mm 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 PCB25.77 X 88.47mm
    Number of Layers2
    Board TypeFlexible PCB
    Board Thickness0.15mm
    Board MaterialPolyimide 25µm
    Board Material SupplierITEQ
    Tg Value of Board Material60℃
    PTH Cu thickness≥20 µm
    Inner Iayer Cu thicknesN/A
    Surface Cu thickness35 µm
    Coverlay ColourYellow
    Number of Coverlay2
    Thickness of Coverlay25 µm
    Stiffener Materialno
    Stiffener ThicknessN/A
    Type of Silkscreen InkIJR-4000 MW300
    Supplier of SilkscreenTAIYO
    Color of SilkscreenWhite
    Number of Silkscreen1
    Peeling test of CoverlayNo peelable
    Legend Adhesion3M 90℃ No peeling after Min. 3 times test
    Surface FinishImmersion Gold
    Thickness of Nickle/GoldAu: 0.03µm(Min.); Ni 2-4µm
    RoHS RequiredYes
    Famability94-V0
    Thermal Shock TestPass, -25℃±125℃, 1000 cycles.
    Thermal StressPass, 300±5℃,10 seconds, 3 cycles. No delamination, no blistering.
    Function100% Pass electrical test
    WorkmanshipCompliance with IPC-A-600H & IPC-6013C Class 2


    Features and benefits

    A. Excellent flexibility

    B. Reducing the volume

    C. Weight reduction

    D. Consistency of assembly

    E. Increased reliability

    F. Controllability of electrical parameter design

    G. The end can be whole soldered

    H. Material optionality

    I. Low cost

    J. Continuity of processing

    K. On-time service

    L. Delivery on time: >98%


    Applications

    Display backlight, Automobile sensor flex board, industrial control interphone


    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.



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